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Abstract This study aimed to produce and characterize a novel gluten‐free cupcake for celiac and diabetes people. For this purpose, wheat flour and sugar in the cupcake formulation were fully replaced with soy flour and monk fruit. Also, samples containing wheat flour with sugar and monk fruit were prepared for comparison. The gluten‐free cupcake without sucrose had a less specific volume and porosity index. To improve these properties, Cydonia oblonga (Cydonia Vulgaris) and Plantago ovata (Plantago genus) were used individually and in combination at concentrations of 1 and 2%. The cake containing no gum was made as a control as well. It was observed that addition of gums had positive effects on the specific volume, porosity index, and weight loss of cakes, but their incorporation increased their hardness. Based on the results, the fabrication of a novel and successful gluten‐free cupcake replaced with soy flour, monk fruit, and gum is possible.

Genus Plantago of Plantaginaceae family is bestowed with a repertoire of structurally diverse secondary metabolites that have not only been used as therapeutics but also effect the plant physiology by conferring adaptive advantages under stress. Assuming that domestication process in plants has influenced their secondary metabolites, we performed a comparative transcriptome of wild and cultivated species of Plantago to analyze the variation in the expression of genes related to secondary metabolite pathways. GO and KEGG analysis of DEGs in wild species showed their enrichment in abiotic stresses, oxidation–reduction and secondary metabolite related pathways. Overall, we found upregulation of genes of carotenoid, flavonoid and phenylpropanoid, isoprenoid, terpenoid and alkaloid pathways in wild species of Plantago in particular, P. lanceolata while mucilage pathway-related genes showed higher expression in P. ovata. Moreover, transcriptome data presented putative transcription factors associated with terpenoids, carotenoid and phenylpropanoid biosynthetic pathways which were also identified using co-expression analysis of cluster 9 (secondary metabolite enriched gene cluster). Taken together, the genomic resource obtained from the present study form a valuable repository of genetic information for elucidating and exploring the secondary metabolic circuitry of Plantagos. Further, information on the regulatory aspects of genes related to secondary metabolites, shall aid in the enhanced production of valuable metabolites in these plants. [ABSTRACT FROM AUTHOR]

This study aimed to produce and characterize a novel gluten‐free cupcake for celiac and diabetes people. For this purpose, wheat flour and sugar in the cupcake formulation were fully replaced with soy flour and monk fruit. Also, samples containing wheat flour with sugar and monk fruit were prepared for comparison. The gluten‐free cupcake without sucrose had a less specific volume and porosity index. To improve these properties, Cydonia oblonga (Cydonia Vulgaris) and Plantago ovata (Plantago genus) were used individually and in combination at concentrations of 1 and 2%. The cake containing no gum was made as a control as well. It was observed that addition of gums had positive effects on the specific volume, porosity index, and weight loss of cakes, but their incorporation increased their hardness. Based on the results, the fabrication of a novel and successful gluten‐free cupcake replaced with soy flour, monk fruit, and gum is possible. [ABSTRACT FROM AUTHOR]

Abstract Background Selenium (Se) is an essential micronutrient for humans, but its deficiency as well as toxicity affects large number of people worldwide. Plantago ovata, a commercially important medicinal plant, is mainly cultivated in western regions of India, where elevated levels of Se have been found in soil. Thus, we evaluated the potential of Se biofortification in P. ovata via phytoremediation and its effect on the bioactive composition. Results The results showed a significant alteration in various morphological and physiological parameters in a dose-dependent manner. The 10 µM Se dose improved seedling height, biomass and total chlorophyll content. There was a gradual increase in total Se content, with highest accumulation of 457.65 µg/g FW at 500 µM Se treatment. Se positively affected the antioxidative metabolism which was measured from the change in total antioxidant capacity, radical scavenging activity and Metallothionein 2 expression. Increasing levels of Se also affected the PAL activity, total polyphenol and flavonoid content. Caffeic acid, Coumaric acid and Rutin were found to be the most abundant phenolic compounds. Conclusions Low levels of selenium (below 50 µM) can successfully improve Se accumulation and elicit production of various polyphenols without hampering plant growth. Thus, Se fortification of P. ovata seedlings via phytoremediation appears to be a feasible and efficient way to enhance its nutraceutical value in dietary products.

Our present study focuses on the effect of exogenous application of melatonin on growth, and improvement in oxidative stress in a medicinal herb, isabgol (Plantago ovata). The pretreatment of P. ovata seeds with 25 and 50 μM melatonin under exposure to different concentrations of Pb, i.e., 50, 100, 200 and 500 μM showed variation in dose-dependent responses. Our findings reveal that the melatonin alleviated Pb stress, as reflected in the improvement of plant height and biomass. The photosynthetic pigments and total protein content are also ameliorated in the presence of Pb stress when treated with melatonin. Melatonin, a potent antioxidant, increases the total antioxidant activity, flavonoid contents and DPPH radical scavenging activity while reducing the stress markers such as H2O2 content and MDA content. Pb competitively enters into Ca2+-gated channels as one of the mechanisms of Pb uptake in plants. Melatonin was found to reduce Pb accumulation while modulating endogenous Ca content in P. ovata. Furthermore, melatonin significantly increased the activities of antioxidant enzymes such as peroxidase (POD), superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX) and ascorbate oxidase (AO) in Pb-stressed samples. The heatmap and principal component analysis also validated the beneficial effect of melatonin in improving plant growth parameters. [ABSTRACT FROM AUTHOR]

Background: Selenium (Se) is an essential micronutrient for humans, but its deficiency as well as toxicity affects large number of people worldwide. Plantago ovata, a commercially important medicinal plant, is mainly cultivated in western regions of India, where elevated levels of Se have been found in soil. Thus, we evaluated the potential of Se biofortification in P. ovata via phytoremediation and its effect on the bioactive composition. Results: The results showed a significant alteration in various morphological and physiological parameters in a dose-dependent manner. The 10 µM Se dose improved seedling height, biomass and total chlorophyll content. There was a gradual increase in total Se content, with highest accumulation of 457.65 µg/g FW at 500 µM Se treatment. Se positively affected the antioxidative metabolism which was measured from the change in total antioxidant capacity, radical scavenging activity and Metallothionein 2 expression. Increasing levels of Se also affected the PAL activity, total polyphenol and flavonoid content. Caffeic acid, Coumaric acid and Rutin were found to be the most abundant phenolic compounds. Conclusions: Low levels of selenium (below 50 µM) can successfully improve Se accumulation and elicit production of various polyphenols without hampering plant growth. Thus, Se fortification of P. ovata seedlings via phytoremediation appears to be a feasible and efficient way to enhance its nutraceutical value in dietary products. [ABSTRACT FROM AUTHOR]

Background: Ulcerative colitis, an idiopathic, chronic inflammatory illness of the intestinal mucosa is primarily fuelled by inflammation and oxidative stress. Aim: The present study aimed to investigate the anti-inflammatory and antioxidant effects of Plantago ovata husk in mice with Trinitro Benzenesulfonic Acid (TNBS)-induced Ulcerative Colitis (UC). Materials and Methods: BALB/c mice were exposed to TNBS intrarectally, causing ulcerative colitis. All mice received diet supplemented with Plantago ovata husk polysaccharide for 6 days, and their clinical symptoms were identified and evaluated. Following sacrifice, analyses of macroscopic and microscopic damage, intestinal oxidative stress levels, and antioxidant enzyme levels were performed. The colon's histological characteristics were also examined. Results: In comparison to the induced group, the highest dose significantly reduced the ulcer index, the histopathologic damage, and levels of NO, LPO, and MPO in tissues. Furthermore, SOD and GSH levels were increased restoring the balance of oxidants in colonic mucosa. The healing of injured tissues was also evident from the histology analysis. Conclusion: In higher doses, P. ovata husk extract significantly lowers mucosal damage and inflammation in mice with UC. P. ovata husk extract showed moderate protective effects and can be beneficial in treating Ulcerative colitis. [ABSTRACT FROM AUTHOR]

For the treatment and management of infectious pathogens, many antimicrobial and antifungal substances were previously found from synthetic and natural sources. Numerous investigations have demonstrated that the compounds coumarins, flavonoids, phenolics, alkaloids, terpenoids, tannins, essential oils, lectin, polypeptides, and polyacetylenes are present in medicinal plants. These bioactive chemicals serve as a foundation for the creation of antibiotics that are utilized to cure infectious illnesses. Allium sativum is being used traditionally since ages for many purposes. It is extensively used in numerous dishes throughout the world and due to its aromatic nature, as a fragrance and Plantago ovata is traditionally used for many therapeutic purposes; laxative anti-acidic stabliser, stomach soothing, diuretic; and it is also anticancerous. Nigela sativa is used for jaundice, paralysis, metabolic syndrome, insulin resistant syndrome, and high level of cholesterol, nerve tension problems; it stops hair fall and boost's immune system. Based on the results of this study, it can be concluded that almost all the plant extracts showed potential antibacterial, insecticidal and antifungal activities against different. The research has focused on the potential therapeutic efficacy of AliumSativum, NigelaSativa, and Plantago Ovata in the treatment of microbial infections due to their significant antibacterial activity. Additionally, Different fractions of the A. sativum, P. ovata, N. sativa were prepared anad analyzed for antibacterial, insecticidal and antifungal activities. Based on the results of this study, it can be concluded that almost all the plant extracts showed potential antibacterial, insecticidal and antifungal activities against different microbes. [ABSTRACT FROM AUTHOR]

Salinity is one of the major abiotic factors that limit the growth and productivity of plants. Foliar application of plant growth regulators (PGRs) may help plants ameliorate the negative impacts of salinity. Thus, a field experiment was conducted at the Botanical Garden University of Balochistan, Quetta, to explore the potential role of PGRs, i.e., moringa leaf extract (MLE; 10%), proline (PRO; 1 µM), salicylic acid (SA; 250 µM), and thiourea (TU; 10 mM) in ameliorating the impacts of salinity (120 mM) on Plantago ovata, an important medicinal plant. Salinity hampered plant photosynthetic pigments and metabolites but elevated oxidative parameters. However, foliar application of PGRs enhanced photosynthetic pigments, including Chl b (21.11%), carotenoids (57.87%) except Chl a, activated the defense mechanisms by restoring and enhancing the metabolites, i.e., soluble sugars (49.68%), soluble phenolics (33.34%), and proline (31.47%), significantly under salinity stress. Furthermore, foliar supplementation of PGRs under salt stress led to a decrease of about 43.02% and 43.27% in hydrogen peroxide and malondialdehyde content, respectively. Thus, PGRs can be recommended for improved photosynthetic efficiency and metabolite content that can help to get better yield under salt stress, with the best and most effective treatments being those of PRO and MLE to predominately ameliorate the harsh impacts of salinity. [ABSTRACT FROM AUTHOR]

The aim of the study was to characterize raw aqueous extracts from Plantago ovata husk in terms of molecular chain mass, osmotic, hydrodynamic, and rheological properties. The raw extracts used in this study have not been yet investigated in the indicated research area. Determination of the molecular weight of the chains present in the extract was performed by gel permeation chromatography (GPC). Osmotic properties were characterized using membrane osmometry. Rheological properties were investigated via classical rotational rheology with normal force measurements, as well as less common but equally important measurements of extensional viscosity. Two types of chains with an average molecular mass of 200 and 1780 kDa were found. The values of the first virial coefficient (B2) indicate the predominance of biopolymer-biopolymer interactions. The hydrodynamic radius established at 25 and 30 °C was 74 and 67 nm, respectively, and lower than at 40 °C (>600 nm). The first critical concentration was determined: c * = 0.11   g · dL − 1 . The dominance of negative normal force values resulting from the formation of a pseudo-gel structure of the heteroxylates was demonstrated. Extensional viscosity measurement results revealed that the studied extracts cannot be treated as simple shear-thinning fluids, as indicated by shear flow, but should be considered as viscoelastic fluids. [ABSTRACT FROM AUTHOR]

BackgroundChemical plastics cause global environmental pollution and can take hundreds of years to be naturally removed from the environment; therefore, eco-friendly alternatives are sought. In that regard, marine algae are considered a promising source for bioplastics. However, macroscopic algae from the Arabian Gulf, despite being produced in massive quantities every year, have never been exploited for this purpose. Moreover, most of the available studies have been primarily based on the extraction of specific components of algae to prepare algal bioplastics, which is laborious and costly and does not allow the use of all biological products of algae. Therefore, the present study aimed at generating biodegradable bioplastic from the whole biomass of a marine green macroscopic alga from the Arabian Gulf, Saudi Arabia, using a simplified method.Materials and methodsThe identity of this green alga was investigated using both morphological characteristics and molecular analysis. Different treatments from the literature were initially tried to yield a bioplastic blend, but did not work. The successful method included drying the green macroalgal biomass and grinding it until it becomes a fine powder, followed by sieving. The powder was placed in 100 ml water with other reagents and then autoclaved. The resulting mixture was further treated with glycerin. Several reagents were tested, but successful treatment was achieved with the combination of the ground seeds of Plantago ovata and the chemical plasticizer polyethylene glycol (PEG; Mw = 3,350). The algal biocomposite was effective in forming a tensile polymer whose properties were further enhanced by adding glycerin 1 day after making the blend. Spectrophotometric, thermal, and mechanical analyses of the blend were conducted, including Fourier transform infrared (FTIR) spectroscopy, dynamic mechanical analysis (DMA) for the mechanical properties, and thermogravimetric analysis (TGA) for thermal stability. The biodegradability of the blend was also examined in sandy soil for 3 months.ResultsThe green alga was identified as macroscopic green alga Ulva sp., which was confirmed by both morphological and molecular analyses. The combination of a plant-based plasticizer and algal biomass formed a polymer with excellent tensile properties and thermal stability. FTIR confirmed the formation of a starch-based blend whose functional groups, O–H, C–H, C=O, and C–O, indicate the formation of a starch bioplastic derived from both starch and cellulose in the green alga and in P. ovata. Biodegradability was proven as the blend lost nearly 40% of its biomass after the soil burial test.DiscussionUlva sp. is a marine alga that is widespread in marine habitats. This particular alga is highly rich in carbohydrates including cellulose, hemicelluloses, starch, and ulvan, among other carbohydrates that constitute the major part of its dry weight. This alga and the plant plasticizer both contain starch as reserve food material. Both natural polysaccharides are excellent precursors for the formation of bioplastics and are completely biodegradable by soil microorganisms. PEG is also biodegradable by bacterial action. Therefore, the whole blend is not only biodegradable but also has suitable tensile strength and thermal stability.ConclusionThe present study describes an eco-friendly novel method that is mostly based on using the whole algal biomass in addition to a natural plant material as a plasticizer, thereby providing a sustainable blend for the manufacturing of bioplastics for use in a number of applications, including agriculture, as it is biodegradable and can be utilized for composting and fertilizing plants.

Plantago ovata Forssk. is an emerging crop yielding psyllium husk, a material comprised of hydrophilic polysaccharides that form mucilage upon wetting. Psyllium husk has important industrial uses including as a dietary fibre supplement and a textural alternative in gluten‐free bread production. Industrial applications require high‐quality and purity psyllium husk, but consistent supply of uniform quality material is often limited by climatic constraints, especially unseasonable rainfall at crop maturity. Here we compared the seed quality of four P. ovata varieties harvested before and after 26 mm of rain and validated our key findings in the following season. Colourimetry showed that the rain event caused the seeds to be darker and greener, possibly from pigment oxidation and microbial growth. Sugar profiling, water absorption assays and microscopy showed that premature hydration of the husk in rain‐damaged samples caused loss of the most soluble mucilage components and an increase in non‐mucilage contaminants, leading to a reduction in seed water absorption capacity, which is a key indicator of psyllium husk functionality. Germination was also diminished in rain‐affected seeds. In this study we show for the first time the extent that unseasonable rain at maturity has on P. ovata seed quality. We suggest that rain‐damaged seeds are unsuitable for husk production and resowing and outline potential screening methods to identify rain‐damaged seeds before purchase. Additionally, the extensive quality impacts described here may make P. ovata a suitable model or indicator species for studying acute climate effects on seed quality, especially from rain. [ABSTRACT FROM AUTHOR]

BACKGROUND: Induction of cholestasis is one of the methods of liver fibrosis which causes the development of oxidative stress, increased expression of fibrogenic markers, excessive deposition of extracellular matrix, and finally the incidence of fibrosis. Plantago ovata is known as a rich source of various secondary metabolites such as phenolic compounds, flavonoids, alkaloids, trypanoids, and ascorbic acid. OBJECTIVES: the present study, the expression of TGF- β as a fibrotic marker and serum alkaline phosphatase (ALP) changes in cholestatic rats treated with P. ovata extract were evaluated. METHODS: In this study, 48 adult Wistar rats were used. The rats were randomly divided into eight groups of six animals each as follows: (1) healthy control group without bile duct ligation (BDL) surgery and treatment; (2–4) three healthy experimental plus P. ovata groups: rats without BDL, treated with P. ovata at dose levels of 100, 200, and 400 mg/kg body weight, respectively; (5) the BDL group: rats with BDL and treated with distilled water; and (6–8) the BDL plus P. ovata groups: rats with BDL and treated with P. ovata at dose levels of 100, 200, and 400 mg/kg body weight, respectively. The rats were treated with P. ovata extract for 45 consecutive days (once per day). After euthanasia and serum isolation, ALP enzyme level was measured. Moreover, the rat liver was fixed in 10% formalin buffer solution. The immunohistochemical study was performed by TGF-β antibody. Data analysis was performed using the One-way ANOVA and Kruskal-Wallis test and the Prism statistical program (p

The biogenic synthesis of silver nanoparticles (AgNPs) and their potent application against dye degradation and phytopathogens are attracting many scientists to nanotechnology. An attempt was made to synthesize silver nanoparticles using Plantago ovata leaf extract and test their effectiveness in removing organic dyes and antifungal activity. In the present study, stable AgNPs were synthesized from 0.1 mM AgNO3 and authenticated by observing the color change from yellow to red-brown, which was confirmed with wavelength UV-Vis spectrophotometer detection. The crystalline nature of the particles was characterized by x-ray diffraction (XRD) patterns. Furthermore, the AgNPs were characterized by high-resolution transmission electron microscope and scanning electron microscope investigations. Atomic force microscopy (AFM) and Raman spectra were also used to confirm the size and structure of the synthesized AgNPs. The elemental analysis and functional groups responsible for the reduction of AgNPs were analyzed by electron dispersive spectroscopy and fourier transform infra-red spectroscopy Fourier transforms infrared, respectively. A new biological approach was taken by breaking down organic dyes such as methylene blue and congo red. The AgNPs effectively inhibit the fungal growth of Alternaria alternata. This could be a significant achievement in the fight against many dynamic pathogens and reduce dye contamination from waste water.

Carbon tetrachloride (CCl4) is a xenobiotic chemical that eventually is used as an experimental model for investigating the ameliorative activity of medicinal plants. Plantago ovata husk is rich in bioactive antioxidant compounds and different metabolites such as polyphenols, fatty acids, amino acids, and flavonoids therefore, Plantago ovata husk can be used for the treatment of liver diseases. A total of thirty white Albino rats were used, at a weight of about (144-176 g). Rats were divided into five groups (6 rats/group): (Control group) received nothing. (Oil-treated group) was given olive oil. (CCl4-treated group) was given CCl4. (PS-CCl4 treated group) was given daily PSH for six weeks and CCl4 for 4 weeks. (CCl4-PS treated group) was given CCl4 and then given daily PSH. All Groups were anaesthetized and sacrificed. White blood cells (WBCs), Red blood cell count (RBCs), Hematocrit (HCT) and Hemoglobin (Hb) concentration were determined. Alanine Aminotransferase (ALT) and Aspartate Aminotransferase (ALT) level, bilirubin and total protein were estimated as well as glycogen content in the liver. The CCl4 induced a significant reduction in red blood cell count, hematocrit and hemoglobin concentration than control and a significant increase in white blood cells. Moreover, liver enzymes, bilirubin and total protein were significantly increased in the CCl4-treated group than in the control. In general, the Treatment of rats with Psyllium husk powder induced a marked degree of improvement in hematological parameters and a marked increase in glycogen content. Moreover, serum levels of ALT, AST, bilirubin, and total protein were decreased. The present study aimed to investigate the possible protective and therapeutic effect of Psyllium husk (PSH) on Carbon Tetrachloride (CCl4) induced toxicity in albino male rats. [ABSTRACT FROM AUTHOR]

Objectives: To avoid swallowing problems of conventional tablets and improved patient compliance Plantago Ovata based Labetalol HCl Rapid disintegrating tablets have been prepared. Methods: Six different (F1 to F6) batches of Labetalol HCl Rapid disintegrating tablets were developed by 'direct compression method' using Plantago ovata as a natural super-disintegrating agent. The formulated RDT were tested for angle of repose', densities like tapped and bulk density, Hausner's ratio, Carr's index like pre-compression parameters and for thickness, weight variation or weight uniformity, tablet hardness, % drug content or content uniformity, water absorption ratio', time require for wetting of tablets' means wetting time, in-vitro drug disintegration time and in-vitro drug dissolution studies under post-compression parameters of evaluation. Results: It was found that the all the results of these pre-compression and post-compression parameters comply with official standards. The drug release was determined using dissolution media of pH 6.8 phosphate buffer through in-vitro dissolution of drug. This study showed that a rapid drug release by prepared tablets. The optimized formulation F6 showed higher water absorption ratio, lower wetting time, minimum in-vitro disintegration time' and higher drug release amongst all the formulations. The F6 formulation was considered the best among all formulations. Conclusion: The prepared rapid disintegrating tablets shows rapid onset of action by quick drug release, minimize side effects and enhanced patient compliance. These prepared tablets containing selective alpha-1 and non-selective beta adrenergic antagonist' drug candidate Labetalol HCl, will be very useful in the treatment of high blood pressure with enhanced bioavailability. [ABSTRACT FROM AUTHOR]

The aim of the study was to characterize raw aqueous extracts from Plantago ovata husk in terms of molecular chain mass, osmotic, hydrodynamic, and rheological properties. The raw extracts used in this study have not been yet investigated in the indicated research area. Determination of the molecular weight of the chains present in the extract was performed by gel permeation chromatography (GPC). Osmotic properties were characterized using membrane osmometry. Rheological properties were investigated via classical rotational rheology with normal force measurements, as well as less common but equally important measurements of extensional viscosity. Two types of chains with an average molecular mass of 200 and 1780 kDa were found. The values of the first virial coefficient (B2) indicate the predominance of biopolymer-biopolymer interactions. The hydrodynamic radius established at 25 and 30 °C was 74 and 67 nm, respectively, and lower than at 40 °C (>600 nm). The first critical concentration was determined: c*=0.11 g·dL−1. The dominance of negative normal force values resulting from the formation of a pseudo-gel structure of the heteroxylates was demonstrated. Extensional viscosity measurement results revealed that the studied extracts cannot be treated as simple shear-thinning fluids, as indicated by shear flow, but should be considered as viscoelastic fluids.

Plantagos are important economical and medicinal plants that possess several bioactive secondary metabolites, such as phenolics, iridoids, triterpenes, and alkaloids. Triterpenoids are the ubiquitous and dynamic secondary metabolites that are deployed by plants for chemical interactions and protection under biotic/abiotic stress. Plantago ovata, a cultivated species, is the source of psyllium, while Plantago major, a wild species, has significant therapeutic potential. Wild species are considered more tolerant to stressful conditions in comparison to their cultivated allies. In view of this, the present study aimed to decipher the terpenoid biosynthetic pathway operative in P. ovata and P. major using a comparative transcriptomics approach. Majority of terpenoid biosynthetic genes were observed as upregulated in P. major including rate limiting genes of MVA (HMGR) and MEP (DXR) pathways and genes (α-AS, BAS, SM, and CYP716) involved in ursolic acid biosynthesis, an important triterpenoid prevalent in Plantago species. The HPLC output further confirmed the higher concentration of ursolic acid in P. major as compared to P. ovata leaf samples, respectively. In addition to terpenoid biosynthesis, KEGG annotation revealed the involvement of differentially expressed unigenes in several metabolic pathways, aminoacyl-tRNA biosynthesis, biosynthesis of antibiotics, and biosynthesis of secondary metabolites. MYB was found as the most abundant transcription factor family in Plantago transcriptome. We have been able to generate valuable information which can help in improving terpenoid production in Plantago. Additionally, the present study has laid a strong foundation for deciphering other important metabolic pathways in Plantago. [ABSTRACT FROM AUTHOR]

ABSTRACT The aim of this study was to evaluate the effects of Psyllium (PSY) and Carboxymethylcellulose (CMC) administration on fecal elimination of sand in horses with asymptomatic sand accumulations. Eight horses were selected from sandy areas and randomly divided into 2 groups of four animals. The subjects were treated either with CMC or PSY. The presence of intestinal sand was confirmed through radiography and glove sedimentation test. The study was performed in two phases, with a 7-day interval. In phase I, all the animals received 8 liters of warm water; in phase II, the CMC group received 8 liters of water + 1g/kg of CMC, whereas the PSY group received 8 liters of water + 1g/kg of PSY. All administrations were performed through nasogastric intubation and fractionated in 2 equal volume administrations with an interval of two hours. General and specific physical examination of the digestive system were performed in conjunction with abdominal ultrasonography before the administrations and after 6, 12, 24, 36 and 48 hours, aiming to evaluate intestinal motility and presence of sand. All the feces eliminated by the animals within the 72 hours following the administrations were quantified, diluted and sedimented in order to calculate the sand output (g/kg of feces). All the animals were also subjected to radiographic examination to quantify sand accumulation prior to phase I and after 72 hours of phases I and II. No adverse effects were observed after the treatments. It was possible to notice higher sand elimination in both groups during the phase I, whereas no difference was observed in sand elimination rates between the groups in phase II. The radiographic scores presented differences between the initial timepoint and 72h in phases I and II for both groups. Based on the sand elimination rates and radiographic score, this study demonstrated that sand output was greater after administration of water alone, compared to CMC and Psyllium, leading to the inference that removal of the sandy environment and prevention of sand re-ingestion are effective measures for the elimination of sand from the colon of horses with asymptomatic sand accumulations.

This study assessed the antiproliferative and genotoxic effects of Linum usitatissimum L. and Plantago ovata Forssk. plants used in Turkish traditional medicine for medicinal purposes. P. ovata and L. usitatissimum, which have a purgative effect, have been used extensively in recent years. The P. ovata plant has a large quantity of soluble fibre in the seed coat, while the seeds of the L. usitatissimum also have a large quantity of mucilage from the soluble fibres. In the present study, the genotoxic and antiproliferative effects of these species were examined using the Allium cepa L. test. As an experimental group, three different concentrations (for P. ovata-7.2 mg/mL, 14.4 mg/mL and 28.8 mg/mL; for L. usitatissimum-20 mg/mL, 40 mg/mL and 80 mg/mL) were used (two different concentration series were used, taking into consideration the traditional usage quantities); purified water was used as a negative control, and methyl methane sulfonate (the DNA-alkylating agent MMS, 0.01 mg/mL) was used as a positive control. To evaluate the mitotic index (MI) and chromosome aberrations type (CA) of the A. cepa root-tip meristem cells, approximately 1000 cells per concentration group, including the controls, were numbered. For both extractions, it was observed that the root length decreased from the negative control to other concentrations, with the lowest length in the positive control. P. ovata and L. usitatissimum were found to cause alters in the rates of the MI relative to the negative control in A. cepa due to the increased concentration. The comet assay distinctly indicated that concentration-dependent DNA damage in the root-tip meristem cells of A. cepa were detected for the different concentrations of plant extracts. These results showed that P. ovata and L. usitatissimum aqueous extracts had increased concentrations that were above the recommended antiproliferative and genotoxic effects. [ABSTRACT FROM AUTHOR]

Abstract Background Myxospermy is a process by which the external surfaces of seeds of many plant species produce mucilage—a polysaccharide-rich gel with numerous fundamental research and industrial applications. Due to its functional properties the mucilage can be difficult to remove from the seed and established methods for mucilage extraction are often incomplete, time-consuming and unnecessarily wasteful of precious seed stocks. Results Here we tested the efficacy of several established protocols for seed mucilage extraction and then downsized and adapted the most effective elements into a rapid, small-scale extraction and analysis pipeline. Within 4 h, three chemically- and functionally-distinct mucilage fractions were obtained from myxospermous seeds. These fractions were used to study natural variation and demonstrate structure–function links, to screen for known mucilage quality markers in a field trial, and to identify research and industry-relevant lines from a large mutant population. Conclusion The use of this pipeline allows rapid analysis of mucilage characteristics from diverse myxospermous germplasm which can contribute to fundamental research into mucilage production and properties, quality testing for industrial manufacturing, and progressing breeding efforts in myxospermous crops.

Background: The present study aimed at investigating the topical effect of the combination of Plantago ovata and vinegar on the improvement of rural cutaneous leishmaniasis lesions. Materials and Methods: The present randomized double-blind controlled clinical trial was performed on 42 patients with rural skin leishmaniasis. In the case group, in addition to injecting glucantime into the lesion according to the latest national instructions, a combination of P. ovata and vinegar was applied topically twice a day for 8 weeks. In the control group, only glucantime injection into the lesion was performed for 8 weeks according to the latest national guidelines. At the end of the 1st, 2nd, 3rd, 4th, 8th, and 12th weeks after the intervention, the lesion area and improvement were evaluated and recorded. Results: The results of the present study indicated the lesion area in the case group with the mean of 0.35 ± 0.39 cm and 0.18 ± 0.27 cm in the 8th and 12th weeks, respectively was significantly less than that of the control group with the mean of 0.64 ± 0.78 cm and 0.56 ± 0.44, respectively (P < 0.05). Twelve weeks after the intervention, 84.1% of the lesions in the case group and 65.9% of the lesions in the control group were completely improved (P < 0.05). Conclusion: According to the results of the present study, the improvement of leishmaniasis lesion with the topical application of the combination of P. ovata and vinegar was significantly more than that of the control group in the 8th and 12th weeks after the intervention.

Heavy metal toxicity poses a harmful threat to plants. Cadmium is a non-essential heavy metal which enters plant cell via soil as a result of human malpractices, pollution and industrial works and causes severe damage to plants. Our study focuses on the effects of Cadmium stress in the plant Plantago ovata (P. ovata) by observing the content of Phytochelatin 2 (PC2) and the expression of Metallothionein 2 (MT2) gene, both metal chelating agents. We observed the impact of Cadmium stress on phenotypic changes of P. ovata and performed Reverse Phase HPLC (RPHPLC) analysis to observe the changes in PC2 content when exposed to an increasing concentration of heavy metal stress. For MT2 gene expression, we performed the Reverse Transcription Polymerase Chain Reaction (RT-PCR) technique. In case of PC2 we observed gradual increase in its content with response to heavy metal stress whereas it was observed that there is a considerable rise and a sudden fall in expression levels of MT2 gene when exposed to increasing levels of Cadmium stress. The results suggest that although both PC2 and MT2 are able to combat heavy metal stress, PC2 does so more effectively when compared to MT2. [ABSTRACT FROM AUTHOR]

Drought is the major limiting factor of plant growth and productivity in many regions of the world. To determine the response of different ecotypes of ispaghula (Plantago ovata Forssk.) to drought stress, a field experiment was conducted at the Research Institute of Forests and Rangelands, Tehran, Iran in 2018. The experimental design was a split plot based on a randomized complete block design (RCBD) with three replications. The main factor included drought stress at three levels control (D1), drought stress after flowering stage with supplemental irrigation in the filling stage (D2), and post-flowering drought stress (D3). The second factor contained eight ecotypes of Plantago ovate, including Dehloran (3328), Alborz (3968), Markazi (14592), Dashtestan (21228), Hormozgan-1 (31536), Hormozgan-2 (31563), Ghaen (37496), and Sarbisheh (38917). The results showed a significant effect of drought stress and ecotypes for all traits (P<0.01). The interaction between ecotypes and drought stress was not significant for yield and yield components. Ispaghula ecotypes showed similar responses to drought stress. The highest grain yield with an average value of 720 kg/ha was obtained in ecotype 3328 and it was considered as the best ecotype to cope drought stress conditions. Ispaghula grain yield decreased by an average of 11.02% and 23.65% with drought stress D2 and D3 in comparison with control (D1), respectively. A significant difference between D2 and D3 were observed, so that the grain yield of D3 was 11.26% lower than D2. Regardless of the drought stress level, ecotype Dehloran (3328) produced the highest grain and was recommended for breeding improved varieties. Considering drought the ecotype Dehloran (3328) that had a good yield under normal irrigation conditions produced the least yields than other ecotypes. [ABSTRACT FROM AUTHOR]

BACKGROUND: Induction of cholestasis is one of the methods of liver fibrosis which causes the development of oxidative stress, increased expression of fibrogenic markers, excessive deposition of extracellular matrix, and finally the incidence of fibrosis. Plantago ovata is known as a rich source of various secondary metabolites such as phenolic compounds, flavonoids, alkaloids, trypanoids, and ascorbic acid. OBJECTIVES: the present study, the expression of TGF-β as a fibrotic marker and serum alkaline phosphatase (ALP) changes in cholestatic rats treated with P. ovata extract were evaluated. METHODS: In this study, 48 adult Wistar rats were used. The rats were randomly divided into eight groups of six animals each as follows: (1) healthy control group without bile duct ligation (BDL) surgery and treatment; (2-4) three healthy experimental plus P. ovata groups: rats without BDL, treated with P. ovata at dose levels of 100, 200, and 400 mg/kg body weight, respectively; (5) the BDL group: rats with BDL and treated with distilled water; and (6-8) the BDL plus P. ovata groups: rats with BDL and treated with P. ovata at dose levels of 100, 200, and 400 mg/kg body weight, respectively. The rats were treated with P. ovata extract for 45 consecutive days (once per day). After euthanasia and serum isolation, ALP enzyme level was measured. Moreover, the rat liver was fixed in 10% formalin buffer solution. The immunohistochemical study was performed by TGF-β antibody. Data analysis was performed using the One-way ANOVA and Kruskal-Wallis test and the Prism statistical program (P<0.0001). RESULTS: The results showed a significant increase in the serum levels of ALP enzyme and TGF-β expression in BDL group. Treatment with P. ovata extract was able to significantly improve these changes in a dosedependent manner. CONCLUSIONS: The results of this study showed that P. ovata extract probably due to its phenolic compounds and its antioxidant effect has a protective effect on the liver and subsequently improves the increased serum ALP level and also reduced TGF-β expression. [ABSTRACT FROM AUTHOR]

The seeds and husk of Plantago origin are rich source of dietary fiber known for its medicinal use. Despite the use of both Plantago psyllium and Plantago ovata products due to their physicochemical and nutritional properties, only the effects of Plantago ovata husk have been studied. Their structure-forming properties may positively affect gluten-free bread quality only if an adequate dough hydration is used. The aim of the work is to analyze the effect of different Plantago products: Plantago psyllium seeds and Plantago ovata seeds and husk in quantities of 3, 6 and 9% share on the rheological profile of model gluten-free dough and bread and bread’s technological quality and shelf-life. The rheological parameters of the dough were determined with Mixolab protocols and uniaxial deformation test. Bread quality and its textural profile analysis after cooling and storage were determined. The addition of Plantago psyllium seeds weakened the dough. All additives contributed to a reduction in starch retrogradation, bread hardness and water loss during baking, and to the improvement of the doughs’ resistance to extension, dough energy and bread yield. This influence is strongest when the Plantago ovata husk was used. However, the consumer acceptance of the tested breads was low and, in this respect, the breads with the addition of seeds of both Plantago psyllium and ovata were considered to be better than the husk.

Abstract Background Plants experience severe physiological stress from heavy metal pollution caused by improper discarding of the industrial wastes. Hexavalent chromium [Cr (VI)] is one of the major heavy metal pollutants in India and is present particularly in some regions where Plantago ovata grows to a great extent. This study was aimed at finding the effects of Cr (VI) on P. ovata and manoeuvres of the plant to combat such heavy metal exposure in vitro. Methods Potassium dichromate was used as a source of Cr (VI) to induce the heavy metal stress. Range of Cr (VI) sublethal doses [0 mM (control), 0.1 mM, 0.3 mM, 0.5 mM, 1 mM, 1.5 mM and1.8 mM] was used to observe its effect on the plant. The seeds of the plant were grown on sucrose-agar media with different concentrations of potassium dichromate, and ten-day old seedlings were then harvested and examined. Results The germination rate reduced below 50% at 1.9 mM Cr (VI) concentration and thus, 0 mM–1.8 mM concentration ranges were found to be suitable for sublethal dose. Morphological changes namely, reduction of the shoot-root length and multiple root development were caused by Cr (VI) in a dose-dependent manner. The plant showed elevated responses against Cr (VI), up to 1.5 mM (10 days treated) in terms of increasing accumulation of secondary metabolites like polyphenols, chlorophyll content (chlorophyll a, b and total chlorophyll), carotenoids and total antioxidant activity. DPPH radical scavenging activity along with malondialdehyde (MDA) content was not significantly elevated with the increase in Cr (VI) concentration indicating that the lipid peroxidation rate within the tissue was low. Phenylalanine ammonia lyase (PAL) and polyphenol oxidase (PPO) gene expressions were upregulated by 1 mM Cr (VI) concentration, which decreased at higher concentrations. The atomic absorption spectroscopy analysis also showed significant accumulation of Cr (VI) in the shoot and root with an increase in the potassium dichromate concentration. Conclusion Cr (VI) reduced the shoot-root length and seed germination in a dose-dependent manner. The plant system tried to combat the Cr (VI) stress by upregulating the stress response genes in the phenylpropanoid pathway along with an increase in polyphenol and antioxidant contents, which were evident from the lowering of lipid peroxidation rate and increase in PAL and PPO gene expressions.

Twenty four accessions of Plantago ovata were grown to study existing variability, correlation and cause and effect relationships between yield and its component traits with their possible view in future improvement programmes. Analysis of variances displayed highly significant differences among accessions for all the traits. High heritability (>75%) coupled with the high genetic advance (>30%) were observed for the traits viz., leaf width, number of spikes/plant, biological yield/plant and seed yield/plant suggesting predominance of additive gene action. Seed yield/plant exhibited highly significant and positive correlation with biological yield/plant followed by number of spikes/plant, effective tillers/plant, harvest index, seed weight/spike, spike weight and husk recovery both at genotypic and phenotypic level. Biological yield/plant, harvest index, spike weight, effective tillers/plant and husk recovery exhibited the highest positive and significant direct effect on seed yield/plant. Critical analysis of results obtained from character association and path analysis indicated that the traits viz., biological yield/plant, harvest index, spike weight, effective tillers/plant and husk recovery were of prime concern as they possessed high positive association and direct effects on seed yield/plant. These traits are more reliable for selection for yield improvement programmes in Plantago ovata.

Background. Plantago ovata is a medicinal plant, rich in fibre. Its seed-husk (psyllium) is used to control constipation, obesity, diabetes and cholesterol levels etc. In the presented study, it was incorporated into poultry meat formulations and the quality parameters of the cooked samples were tested. Materials and methods. Ground thigh meat from chicken was mixed with water and powdered Plantago ovata husk. The amount of water and husk ranged between 0-40% and 0-3%, respectively. The proximate composition of raw batters and cooked samples was tested. Production yields were calculated after cooking the samples in a water bath. Water activity, texture and colour parameters were analysed in the cooked samples. Results. Fat content was lower in the samples with higher water addition. Water activity was lower in the samples with psyllium, but increased in the case of the highest water addition. Production yields were the highest while hardness was the lowest in the sample with both 3% of Plantago ovata husk and 40% of water. Lightness decreased when psyllium was added while redness decreased with both psyllium and water addition. Conclusion. The formulation with 40% of water and 3% of psyllium was chosen as the best, due to high production yields. Further tests should be conducted to test microbiological stability, shelf-life and consumer acceptance of products manufactured according to the abovementioned parameters. [ABSTRACT FROM AUTHOR]

Plantago ovata (Plantaginaceae) is an economically and medicinally important species, however, least is known about its genomics and evolution. Here, we report the first complete plastome genome of P. ovata and comparison with previously published genomes of related species from Plantaginaceae. The results revealed that P. ovata plastome size was 162,116 bp and that it had typical quadripartite structure containing a large single copy region of 82,084 bp and small single copy region of 5,272 bp. The genome has a markedly higher inverted repeat (IR) size of 37.4 kb, suggesting large-scale inversion of 13.8 kb within the expanded IR regions. In addition, the P. ovata plastome contains 149 different genes, including 43 tRNA, 8 rRNA, and 98 protein-coding genes. The analysis revealed 139 microsatellites, of which 71 were in the non-coding regions. Approximately 32 forward, 34 tandem, and 17 palindromic repeats were detected. The complete genome sequences, 72 shared genes, matK gene, and rbcL gene from related species generated the same phylogenetic signals, and phylogenetic analysis revealed that P. ovata formed a single clade with P. maritima and P. media. The divergence time estimation as employed in BEAST revealed that P. ovata diverged from P. maritima and P. media about 11.0 million years ago (Mya; 95% highest posterior density, 10.06–12.25 Mya). In conclusion, P. ovata had significant variation in the IR region, suggesting a more stable P. ovata plastome genome than that of other Plantaginaceae species. [ABSTRACT FROM AUTHOR]

Background: Myxospermy is a process by which the external surfaces of seeds of many plant species produce mucilage—a polysaccharide-rich gel with numerous fundamental research and industrial applications. Due to its functional properties the mucilage can be difficult to remove from the seed and established methods for mucilage extraction are often incomplete, time-consuming and unnecessarily wasteful of precious seed stocks. Results: Here we tested the efficacy of several established protocols for seed mucilage extraction and then downsized and adapted the most effective elements into a rapid, small-scale extraction and analysis pipeline. Within 4 h, three chemically- and functionally-distinct mucilage fractions were obtained from myxospermous seeds. These fractions were used to study natural variation and demonstrate structure–function links, to screen for known mucilage quality markers in a field trial, and to identify research and industry-relevant lines from a large mutant population. Conclusion: The use of this pipeline allows rapid analysis of mucilage characteristics from diverse myxospermous germplasm which can contribute to fundamental research into mucilage production and properties, quality testing for industrial manufacturing, and progressing breeding efforts in myxospermous crops. [ABSTRACT FROM AUTHOR]

Ispaghul (Plantago ovata Forsk.) as an important medicinal plant has obtained a remarkable reputation due to therapeutic applications of seed mucilage. To determine the effect of in vitro-induced polyploidy on various characteristics of P. ovata, the terminal bud of two true leaves seedlings were separately treated with colchicine [0.1, 0.3 and 0.5% (w/v) for 6, 12 and 24 h] and trifluralin [7.5, 15 and 22.5% (w/v) for 24, 48 and 72 h] solutions. The ploidy level of induced tetraploids was determined via chromosome counting of root tip cells, and then confirmed through flow-cytometric analysis. Comparison the morphological, physiological, anatomical features of intact diploids and induced tetraploids revealed that tetraploids had considerable more height, thicker leaf, larger spike and seed, larger pollen grain and more seeds per spike. Moreover, the amount of chlorophyll (a, b, and total) and carotenoids, as well as chloroplast number in guard cells was further in tetraploids than diploids. Unlike density, stomata size in tetraploids was bigger than that one in diploids. It was also observed that seeds of tetraploids had more mucilage than diploids. In summary, we firstly developed the P. ovata tetraploids and suggested 0.3% colchicine for 24 h and 22.5% trifluralin for 72 h as the optimum treatments for inducing tetraploidy in P. ovata. [ABSTRACT FROM AUTHOR]

This study aimed to produce and characterize a novel gluten-free cupcake for celiac and diabetes people. For this purpose, wheat flour and sugar in the cupcake formulation were fully replaced with soy flour and monk fruit. Also, samples containing wheat flour with sugar and monk fruit were prepared for comparison. The gluten-free cupcake without sucrose had a less specific volume and porosity index. To improve these properties, Cydonia oblonga (Cydonia Vulgaris) and Plantago ovata (Plantago genus) were used individually and in combination at concentrations of 1 and 2%. The cake containing no gum was made as a control as well. It was observed that addition of gums had positive effects on the specific volume, porosity index, and weight loss of cakes, but their incorporation increased their hardness. Based on the results, the fabrication of a novel and successful gluten-free cupcake replaced with soy flour, monk fruit, and gum is possible., Competing Interests: All authors declare that they have no conflict of interest., (© 2023 The Authors. Food Science & Nutrition published by Wiley Periodicals LLC.)

Dry eye disease is a relatively common eye disorder associated with decrease in quality of life. In this study, efficacy of an eye drop of Plantago ovata mucilage on symptoms of dry eye disease was evaluated. In a randomized, double-blind, placebo-controlled clinical trial, sixty dry eye patients with ocular symptoms and total Ocular Surface Disease Index (OSDI) score of ≥12 were randomly assigned to receive either a natural ophthalmic drop, made of Plantago ovata mucilage or placebo 4 times a day for 6 weeks. The patients were evaluated at pretreatment (baseline), weeks 4 and 6 post-treatment. The evaluation of the efficacy and safety were conducted based on the OSDI questionnaire, the noninvasive tear film break-up time (NI-BUT) with keratograph, the Schirmer test without anesthesia, and the osmolarity test, as well as by monitoring possible adverse events. After 6 weeks, within group analysis showed a significant improvement in total OSDI score (p < 0.001). In addition, between group comparison revealed a significant improvement in the OSDI score of the intervention group (p < 0.001). Although, NI-BUT was significantly improved in the Plantago ovata group (p = 0.004), however no statistically significant difference was observed in between group analysis. There were no significant differences between two groups, or significant changes within the groups in the Schirmer test without anesthesia and the osmolarity test. No serious adverse events were reported. In conclusion, P. ovata mucilage is a natural, inexpensiveness, and safe lubricant polymer that could have beneficial ocular effects on subjective symptoms of the patients with dry eye disease. [ABSTRACT FROM AUTHOR]

Plantago ovata (Plantaginaceae) is a medicinal plant cultivated extensively in Western Asia for seed husk known as blonde Psyllium or Isabgol. We used ISSR molecular markers to investigate the population genetic structure and genetic divergence within P. ovata populations. We identified P. ovata variety as var. decumbens based on the morphological data. WARD tree and PCoA plot produced similar results on morphological data. AMOVA revealed a significant genetic differentiation among the studied populations. STRUCTURE analyses showed some degree of gene flow among the studied populations. NJ tree and PCoA plot of ISSR data revealed that there are at least three genetic groups within the studied populations. Though the studied populations in P. ovata are genetically differentiated, there are not qualitative morphological features for differentiating among theirs. Therefore, we consider them as ecotypes within P. ovata. [ABSTRACT FROM AUTHOR]

The present work was aimed to formulate Superporous Hydrogel tablets of Nimodipine using an effervescent approach for gastro retentive drug delivery system to improve its bioavailability by using different rate retarding polymers like plantago ovata, tamarind gum and carbopol, along with suitable excipients. All the formulations were prepared by direct compressionmethod. The prepared tablets of all the formulations were evaluated for physical characteristics, in-vitro drug release, hardness and friability. Optimized formulation F8 containing 0.3% of plantago ovata and carbopol each was considered as the best formulation with respect to in vitro drug release for 12 hours release act ion. The results showed that the drug release rate was decreased as the viscosity of the polymer was increased. The drug release kinetics was performed for the optimized formulation and it shows zero orderwith non-fickian transport drug release. [ABSTRACT FROM AUTHOR]

Highlights • Multi-scale assembly of mucilage hydrogels from Plantago ovata seed is studied. • A combination of small angle scattering and rheological techniques is used. • Molecular structure and gel network are evaluated in non-gelled and gelled states. • Hydrogen bonding contributes to gelation and distinct gel properties. Abstract The structures of two hydrogels formed by purified brush-like polysaccharides from Plantago ovata seed mucilage have been characterised from the nanometre to micrometre scale by using a combination of SANS and USANS techniques. These two hydrogels have distinctly different melting and rheological properties, but the structure of their gel networks bears striking similarity as revealed by USANS/SANS experiments. Surprisingly, we find that the dramatic changes in the rheological properties induced by temperature or change in the solvent quality are accompanied by a small alteration of the network structure as inferred from scattering curves recorded above melting or in a chaotropic solvent (0.7 M KOD). These results suggest that, in contrast to most gel-forming polysaccharides for which gelation depends on a structural transition, the rheological properties of Plantago ovata mucilage gels are dependent on variations in intermolecular hydrogen bonding. By enzymatically cleaving off terminal arabinose residues from the side chains, we have demonstrated that composition of side-chains has a strong effect on intermolecular interactions, which, in turn, has a profound effect on rheological and structural properties of these unique polysaccharides. [ABSTRACT FROM AUTHOR]

Highlights • Expression pattern of the phenylpropanoid-flavonoid pathway genes was studied for the first time in Plantago ovata. • Methanolic leaf extract of P. ovata (PL) has high total flavonoid and phenol content and high antioxidant potential. • Besides, the traditional use of mucilage of P. ovata , present study has revealed it as a possible new source of natural antioxidants. Abstract Flavonoids are the most widespread secondary metabolites in plants, which are synthesized through the phenylpropanoid pathway. These are known to possess various types of health promoting activities. Plantago ovata , a medicinally important plant has not been explored much in terms of its antioxidant potential. In the present study, the expression pattern of genes of the phenylpropanoid-flavonoid biosynthetic pathway in P. ovata was studied in detail for the first time. These genes showed expression in both the tissues under study (leaf and ovary). In addition, the in vitro radical scavenging activity, total antioxidant capacity, and reducing power ability of the plant extracts were also assessed. The experiments revealed that the leaf extract of P. ovata had higher antioxidant activity than that of the husk extract, which also correlated with their total phenolics and flavonoid content. The flavonoid and phenolics content of the leaf extract was observed to be 320.9 ± 0.052 mg Rutin/g dry wt. and 43.8 ± 0.092 mg GAE/g dry wt., respectively. The results of this study suggest that the methanolic extract of P. ovata leaf is a source of natural compounds with significant antioxidant activity. It also presented P. ovata as a possible new source of natural antioxidants which can be further explored as a therapeutic agent in the free radical induced diseases. [ABSTRACT FROM AUTHOR]

Highlights • 1A symmetric karyotype of P. psyllium (2n = 12) demonstrates it as a primitive species. • P. ovata belongs to 2A karyotype classification and it prone to genetic diversity. • P. ovata accumulates higher seed mass and mucilage as compared with P. psyllium. • Early maturity of P. ovata helps it to escape summer drought in dry land areas. • Mucilage content was higher in natural habitats than in experimental field trials. Abstract Plantago ovata and P. psyllium are of the most abundant and widely distributed Plantago species in the world. World-wide, it is an important and growing industrial and medicinal crop for dry land agriculture. In spite of this, basic characterization for economically important traits of these species is lacking for many accessions. In particular, there are gaps in our knowledge about accession identity and ploidy levels and the effects of agronomic practices of yield. This study is aimed at determining mitotic chromosome number, karyotype characteristics, morphological and mucilage character variation of wild accessions of Plantago species collected from a wide geographic range in Iran. Chromosome numbers were determined by a modification of conventional root tip squash method and karyotypes were digitally analysed. Morphological characters were evaluated under experimental field condition. Three replications of morphological and mucilage characters were also measured in the wild in situ natural habitats. The analysis of the karyotype indices showed that all P. ovata accessions were diploid (2n = 8) with small, homogeneous chromosomes. Likewise, P. psyllium accessions were diploid (2n = 12) and had symmetrical karyotype demonstrating P. psyllium as a primitive species. Results showed significant differences in accessions and environments with respect to seed yield, thousand grain weight, mucilage yield, mucilage content, days to flowering and plant height. P. ovata accumulated higher mucilage than P. psyllium. Mucilage content was higher in samples collected from natural habitats compared with those grown under experimental field conditions whereas mucilage yield was lower under field evaluation in natural habitats. Genotype by environment analysis revealed that the most stable accessions were G2 (P. ovata) and G6, G7 and G8 (P. psyllium) for seed yield, and G2 and G4 (P. ovata) and G8 (P. psyllium) for mucilage content, G4 (P. ovata) and all P. psyllium for grain weight. All accessions tested showed stability for mucilage yield, flowering stalk height and days to flowering. The outcome of karyotype analysis and field evaluations in this study provides information important to Plantago breeders focused on crop improvement. [ABSTRACT FROM AUTHOR]