Search

Your search keyword '"GUPTA, Meetu"' showing total 262 results
Start Over Author "GUPTA, Meetu"
262 results on '"GUPTA, Meetu"'

8. The heparin-binding hemagglutinin protein of Mycobacterium tuberculosis is a nucleoid-associated protein

Author

Keshavam, Chetkar Chandra, Naz, Saba, Gupta, Aanchal, Sanyal, Priyadarshini, Kochar, Manisha, Gangwal, Aakriti, Sangwan, Nitika, Kumar, Nishant, Tyagi, Ekta, Goel, Simran, Singh, Nitesh Kumar, Sowpati, Divya Tej, Khare, Garima, Ganguli, Munia, Raze, Dominique, Locht, Camille, Basu-Modak, Sharmila, Gupta, Meetu, Nandicoori, Vinay Kumar, and Singh, Yogendra

Published
2023
Full Text
View/download PDF

34. The reprogramming of mitochondrial energy metabolism in Rice: The role of the TCA cycle and GABA shunt under Arsenic exposure.

Author

Bhatia, Priyanka, Saini, Himanshu, Mirza, Zainab, and Gupta, Meetu

Subjects
ENERGY metabolism, ARSENIC, RENEWABLE energy sources, EPISODIC memory, ENERGY crops
Abstract

Arsenic (As) pollution is hazardous for all living organisms. Plants growing in As‐contaminated soil are less performant. Recently, seed priming has attracted significant attention for its beneficial effects on plants. Numerous studies have associated priming technique with the induction of stress memory against traumatic conditions, but its relation to crop's energy balance is under‐researched. The present study highlights variations in energy metabolic pathways, particularly TCA (tricarboxylic acid) cycle and GABA (gamma‐aminobutyric acid)‐shunt in multi‐nutrient [silicon (Si), iron (Fe), zinc (Zn), and ascorbic acid (AA)] primed rice seedlings under As stress. Arsenic exposure decreased the TCA cycle enzymes' activity while intensifying GABA accumulation and metabolism. This enhancement in GABA shunt provides an alternative energy source for As‐stressed seedlings. However, priming and further Fe‐supplementation reduced As‐toxicity by accelerating the activity of both energy pathways, namely, TCA and GABA cycle. Improved energy regulation by priming and Fe‐augmentation also enhanced the functionality of anabolic respiratory‐interactive‐pathway, i.e., carbon‐nitrogen metabolism. The As‐tolerance response of priming and Fe‐augmentation was further analyzed from the expression profiling of nitrogen and phosphorous utilization genes. Out of 10 genes, particular enhancement was observed in OsNiR, OsGS, and OsGOGAT expression with improved macro‐micronutrient content of the seedlings. Thus, irrespective of As infestations, multi‐nutrient (Si, Fe, Zn, and AA) seed priming approach along with Fe‐supplementation may emerge as a beneficial strategy to improve plant metabolic capacity in terms of nitrogen, phosphorous, and carbon assimilation to support normal vigor because they balance cellular energy levels. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

48. Silicon Modulates Expression of PINGenes and Genotoxicity During Arsenic Stress in Rice (Oryza sativa)

Author

Khan, Ehasanullah, Panthri, Medha, Pandey, Chandana, Sahay, Seema, and Gupta, Meetu

Abstract

The purpose of this study was to investigate the role of silicon (Si)–mediated PINgene expression and genotoxicity during arsenic (As) stress in rice. The objective was to examine Si-mediated differential expression of OsPINgenes, and their role in rice root architecture and genotoxicity based on the RAPD profile. The effects of Si on As-exposed rice seedlings of 7/15 days were analyzed. Root-related parameters (root volume, root length ratio, root mass ratio, root fineness, and root tissue density) were measured, followed by estimation and visualization of intracellular reactive oxygen species (ROS). Later, the impact of Si on OsPINgene expression and changes in the random amplification of polymorphic DNA (RAPD) profile during As stress were accessed. Our results revealed that during As + Si treatment, higher expression of all 12 OsPINgenes was observed over As treatment. Furthermore, only OsPIN5cand OsPIN10bwere induced in the presence of As relative to control; however, expression level was not influenced by the root morphology. Noticeable changes in root morphology and the RAPD profile, genomic template stability [GTS (%) = 62.50 and 79.36 in shoots, and 60.31 and 40 in roots of 7- and 15-day-old rice seedlings, respectively], and polymorphism (%) (37 and 34 in shoots, 40 and 38 in roots of 7- and 15-day-old rice seedlings, respectively) were observed upon the addition of Si with As. Overall, Si improved the root morphology by regulating the expression of OsPINgenes, ROS levels, and DNA stability.

Published
2023
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results