23 results on '"Ritu Gill"'
Search Results
2. Editorial: Emerging contaminants and their effect on agricultural crops
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M. Naeem, Ritu Gill, Sarvajeet Singh Gill, Kashmir Singh, Adriano Sofo, and Narendra Tuteja
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agricultural crops ,climate change ,climatic factors ,emerging contaminants ,nitrogen and phosphorus nutrient cycling ,particularly polyethylene ,Plant culture ,SB1-1110 - Published
- 2023
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3. Editorial: Frontiers in malaria research
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Ritu Gill, Rachna Hora, Mahmood M. Alam, Abhisheka Bansal, Tarun Kumar Bhatt, and Ashwani Sharma
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malaria ,Plasmodium ,antimalarials ,malaria control and elimination ,malaria vaccine ,cytoadherence ,Microbiology ,QR1-502 - Published
- 2023
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4. Marker-Free Rice (Oryza sativa L. cv. IR 64) Overexpressing PDH45 Gene Confers Salinity Tolerance by Maintaining Photosynthesis and Antioxidant Machinery
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Ranjan Kumar Sahoo, Renu Tuteja, Ritu Gill, Juan Francisco Jiménez Bremont, Sarvajeet Singh Gill, and Narendra Tuteja
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antioxidants ,reactive oxygen species ,oxidative stress ,marker-free transgenic rice ,mature seed-derived calli ,pea DNA helicase 45 ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Helicases function as key enzymes in salinity stress tolerance, and the role and function of PDH45 (pea DNA helicase 45) in stress tolerance have been reported in different crops with selectable markers, raising public and regulatory concerns. In the present study, we developed five lines of marker-free PDH45-overexpressing transgenic lines of rice (Oryza sativa L. cv. IR64). The overexpression of PDH45 driven by CaMV35S promoter in transgenic rice conferred high salinity (200 mM NaCl) tolerance in the T1 generation. Molecular attributes such as PCR, RT-PCR, and Southern and Western blot analyses confirmed stable integration and expression of the PDH45 gene in the PDH45-overexpressing lines. We observed higher endogenous levels of sugars (glucose and fructose) and hormones (GA, zeatin, and IAA) in the transgenic lines in comparison to control plants (empty vector (VC) and wild type (WT)) under salt treatments. Furthermore, photosynthetic characteristics such as net photosynthetic rate (Pn), stomatal conductance (gs), intercellular CO2 (Ci), and chlorophyll (Chl) content were significantly higher in transgenic lines under salinity stress as compared to control plants. However, the maximum primary photochemical efficiency of PSII, as an estimated from variable to maximum chlorophyll a fluorescence (Fv/Fm), was identical in the transgenics to that in the control plants. The activities of antioxidant enzymes, such as catalase (CAT), ascorbate peroxidase (APX), glutathione reductase (GR), and guaiacol peroxidase (GPX), were significantly higher in transgenic lines in comparison to control plants, which helped in keeping the oxidative stress burden (MDA and H2O2) lesser on transgenic lines, thus protecting the growth and photosynthetic efficiency of the plants. Overall, the present research reports the development of marker-free PDH45-overexpressing transgenic lines for salt tolerance that can potentially avoid public and biosafety concerns and facilitate the commercialization of genetically engineered crop plants.
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- 2022
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5. DNA Damage and Repair in Plants under Ultraviolet and Ionizing Radiations
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Sarvajeet S. Gill, Naser A. Anjum, Ritu Gill, Manoranjan Jha, and Narendra Tuteja
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Technology ,Medicine ,Science - Abstract
Being sessile, plants are continuously exposed to DNA-damaging agents present in the environment such as ultraviolet (UV) and ionizing radiations (IR). Sunlight acts as an energy source for photosynthetic plants; hence, avoidance of UV radiations (namely, UV-A, 315–400 nm; UV-B, 280–315 nm; and UV-C,
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- 2015
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- View/download PDF
6. Genome-Wide Collation of the Plasmodium falciparum WDR Protein Superfamily Reveals Malarial Parasite-Specific Features.
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Priyanka Chahar, Manjeri Kaushik, Sarvajeet Singh Gill, Surendra Kumar Gakhar, Natrajan Gopalan, Manish Datt, Amit Sharma, and Ritu Gill
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Medicine ,Science - Abstract
Despite a significant drop in malaria deaths during the past decade, malaria continues to be one of the biggest health problems around the globe. WD40 repeats (WDRs) containing proteins comprise one of the largest and functionally diverse protein superfamily in eukaryotes, acting as scaffolds for assembling large protein complexes. In the present study, we report an extensive in silico analysis of the WDR gene family in human malaria parasite Plasmodium falciparum. Our genome-wide identification has revealed 80 putative WDR genes in P. falciparum (PfWDRs). Five distinct domain compositions were discovered in Plasmodium as compared to the human host. Notably, 31 PfWDRs were annotated/re-annotated on the basis of their orthologs in other species. Interestingly, most PfWDRs were larger as compared to their human homologs highlighting the presence of parasite-specific insertions. Fifteen PfWDRs appeared specific to the Plasmodium with no assigned orthologs. Expression profiling of PfWDRs revealed a mixture of linear and nonlinear relationships between transcriptome and proteome, and only nine PfWDRs were found to be stage-specific. Homology modeling identified conservation of major binding sites in PfCAF-1 and PfRACK. Protein-protein interaction network analyses suggested that PfWDRs are highly connected proteins with ~1928 potential interactions, supporting their role as hubs in cellular networks. The present study highlights the roles and relevance of the WDR family in P. falciparum, and identifies unique features that lay a foundation for further experimental dissection of PfWDRs.
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- 2015
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7. Plant Adaptation to Environmental Change: Significance of Amino Acids and their Derivatives
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Naser A Anjum, Sarvajeet Singh Gill, Ritu Gill, Naser A Anjum, Sarvajeet Singh Gill, Ritu Gill
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- 2014
8. Demographic, Lifestyle, and Serologic Risk Factors for Rheumatoid Arthritis-Associated Bronchiectasis: Role of RA-related Autoantibodies
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Gregory McDermott, Ritu Gill, Staci Gagne, Suzanne Byrne, Weixing Huang, Xiaosong Wang, Lauren C. Prisco, Alessandra Zaccardelli, Lily W. Martin, Lucy Masto, Vanessa L. Kronzer, Nancy Shadick, Paul F. Dellaripa, Tracy J. Doyle, and Jeffrey A. Sparks
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Arthritis, Rheumatoid ,Rheumatology ,Risk Factors ,Case-Control Studies ,Immunology ,Immunology and Allergy ,Humans ,Lung Diseases, Interstitial ,Life Style ,Article ,Autoantibodies ,Bronchiectasis ,Demography - Abstract
Objective.To investigate demographic, lifestyle, and serologic risk factors for isolated rheumatoid arthritis (RA)–associated bronchiectasis (RA-BR) that is not a result of interstitial lung disease (ILD).Methods.We performed a case-control study using patients with RA from the Mass General Brigham Biobank. We reviewed the records of all patients with RA meeting the 2010 American College of Rheumatology/European Alliance of Associations for Rheumatology criteria with computed tomography (CT) chest imaging to identify RA-BR cases and controls with RA and RA-related lung disease. For each patient, the CT chest imaging that was performed closest to enrollment was independently reviewed by 2 radiologists for the presence of RA-related lung diseases. Cases had clinical and radiologic evidence of RA-BR without interstitial lung abnormalities on imaging. Controls had RA and no evidence of bronchiectasis or ILD. We examined the associations between demographic, lifestyle, and serologic factors with RA-BR using multivariable logistic regression.Results.We identified 57 cases of isolated RA-BR and 360 RA controls without RA-related lung disease. In multivariable models, RA-BR was associated with older age at RA onset (OR 1.37 per 10 years, 95% CI 1.02–1.82), lower BMI at RA diagnosis (OR 0.94 per kg/m2, 95% CI 0.89–0.99), seropositive RA (OR 3.96, 95% CI 1.84–8.53), positive rheumatoid factor (OR 4.40, 95% CI 2.14–9.07), and positive anticyclic citrullinated peptide (OR 3.47, 95% CI 1.65–7.31). Higher titers of RA-related autoantibodies were associated with higher odds of RA-BR.Conclusion.Seropositivity, older age at RA diagnosis, and lower BMI at RA onset were associated with isolated bronchiectasis in RA that was not a result of ILD. These findings expand the list of potential risk factors for RA-BR and suggest a pathogenic link between airway inflammation and RA-related autoantibodies.
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- 2022
9. Associations of the MUC5B promoter variant with timing of interstitial lung disease and rheumatoid arthritis onset
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Gregory McDermott, Ritu Gill, Staci Gagne, Suzanne Byrne, Weixing Huang, Jing Cui, Lauren Prisco, Alessandra Zaccardelli, Lily Martin, Vanessa L Kronzer, Matthew Moll, Michael H Cho, Nancy Shadick, Paul F Dellaripa, Tracy Doyle, and Jeffrey A Sparks
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Male ,Middle Aged ,Mucin-5B ,Arthritis, Rheumatoid ,Logistic Models ,Rheumatology ,Basic Science ,Odds Ratio ,Disease Progression ,Humans ,Pharmacology (medical) ,Female ,Lung Diseases, Interstitial ,Promoter Regions, Genetic - Abstract
Objectives To investigate the associations of the common MUC5B promoter variant with timing of RA-associated interstitial lung disease (RA-ILD) and RA onset. Methods We identified patients with RA meeting 2010 ACR/EULAR criteria and available genotype information in the Mass General Brigham Biobank, a multihospital biospecimen and clinical data collection research study. We determined RA-ILD presence by reviewing all RA patients who had CT imaging, lung biopsy or autopsy results. We determined the dates of RA and RA-ILD diagnoses by manual records review. We examined the associations of the MUC5B promoter variant (G>T at rs35705950) with RA-ILD, RA-ILD occurring before or within 2 years of RA diagnosis and RA diagnosis at age >55 years. We used multivariable logistic regression to estimate odds ratios (ORs) for each outcome by MUC5B promoter variant status, adjusting for potential confounders including genetic ancestry and smoking. Results We identified 1005 RA patients with available genotype data for rs35705950 (mean age 45 years, 79% female, 81% European ancestry). The MUC5B promoter variant was present in 155 (15.4%) and was associated with RA-ILD [multivariable OR 3.34 (95% CI 1.97, 5.60)], RA-ILD before or within 2 years of RA diagnosis [OR 4.01 (95% CI 1.78, 8.80)] and RA onset after age 55 years [OR 1.52 (95% CI 1.08, 2.12)]. Conclusions The common MUC5B promoter variant was associated with RA-ILD onset earlier in the RA disease course and older age of RA onset. These findings suggest that the MUC5B promoter variant may impact RA-ILD risk early in the RA disease course, particularly in patients with older-onset RA.
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- 2022
10. Phytoremediation : Management of Environmental Contaminants, Volume 7
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Lee Newman, Abid Ali Ansari, Sarvajeet Singh Gill, M. Naeem, Ritu Gill, Lee Newman, Abid Ali Ansari, Sarvajeet Singh Gill, M. Naeem, and Ritu Gill
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- Biology—Technique, Agricultural biotechnology, Soil science, Botanical chemistry, Plant diseases
- Abstract
The accumulation of large amounts of contaminants occurs in the environment due to industrialization and various other anthropogenic activities. Contaminants ultimately affect human health worldwide. Organic, inorganic, and radioactive substances are the prevalent forms of environmental contaminants and their complete remediation in soils and sediments is rather a difficult task. Concerns of their toxicities led to the emphasis on development of effective techniques to assess the presence and mobility of contaminants in air, water, and soil. Furthermore, the ever-increasing concentration of toxic pollutants in the environment is considered a serious threat to plant, animal, human, and environmental health.Many technologies are in use to clean and eliminate hazardous contaminants from the environment; however, these technologies can be costly, labor intensive, and often distressing to the general public. Phytoremediation is a simple, cost effective, environmentally friendly and fast-emerging new technology for eliminating toxic contaminants from different environments. Phytoremediation refers to the natural ability of certain plants and their associated microbiome (including hyper-accumulators or bio-accumulators) to remove, degrade, or render contaminants harmless. Through this technique, certain species of plants flourish by accumulating contaminants present in the environment. The unique and selective uptake capabilities of plant root and shoot systems, effective translocation, bioaccumulation, and contaminant degradation capabilities of the accumulator plants are utilized in phytoremediation techniques. Phytotechnologies involving the use of plants for contaminant removal gained importance during the last two decades and phytoremediation technology became an effective tool for environmental detoxification because of plants ability to accumulate the contaminants at very high concentrations.Phytoremediation strategies can remove, degrade, or stabilize inorganic and organic contaminants entering a multitude of ecosystems using green plants and their associated microbial communities. The development and use of phytotechnologies continues to move forward at a steady pace. Researchers recognize the potential of phytoremediation to offer a green, cost effective, eco-friendly and feasible application to address some of the world's many environmental challenges. This book provides significant information to add to the previous volumes published on the topic and can serve as the foundation for the development of new applications that feature the integration of modern research discoveries into new methods to remediate contaminated ecosystems. Moreover, this volume brings recent and established knowledge on different aspects of phytoremediation and nano-phytoremediation, providing this information in a single source that offers a cutting-edge synthesis of scientific and experiential knowledge on polluted environments that is useful for policy makers, practitioners and scientists, and engineers.Phytoremediation: Management of Environmental Contaminants, Volume 7 highlights the various prospects that are involved in current global phytoremediation research. This book delivers a content-rich source to the reader and can act as a platform for further research studies. It should meet the needs of all researchers working in, or have an interest in this particular field.
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- 2023
11. Biostimulants in Alleviation of Metal Toxicity in Plants : Emerging Trends and Opportunities
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Sarvajeet Singh Gill, Narendra Tuteja, Nafees A Khan, Ritu Gill, Sarvajeet Singh Gill, Narendra Tuteja, Nafees A Khan, and Ritu Gill
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Biostimulants in Alleviation of Metal Toxicity in Plants: Emerging Trends and Opportunities focuses on the role of substances or micro-organisms whose presence can address issues of metal contamination in soils, seeds and plants. Including a range of biostimulant tools, the book highlights both endogenous and exogenous application. Written and edited by a global team of experts, this book presents an overview on biostimulants in determining metal toxicity. As plants encounter a wide range of environmental challenges during their lifecycle, among which metal toxicity is a common form of abiotic stress, this book thoroughly covers important topics on the subject matter. Once inside a plant system, toxic metals may initiate a variety of physiological alterations in plants, including adversely impacted seed germination, root and shoot growth, chloroplasts ultrastructure and photosynthesis, nutrients assimilation, carbohydrates metabolism, and plant hormonal status which, collectively, results in reduced plants yields. In addition to several naturally occurring physiological and metabolic re-programing responses, plants may also modify their root and shoot systems in order to dilute entered amount of toxic metals. As an additional tool biostimulants have emerged as one of the important plant protectors under adverse conditions. - Includes endogenous and exogenous application of biostimulants - Focuses on use based on specific metal contamination - Presents forward-looking prospects for the use of biostimulants in plant health protection
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- 2023
12. COVID-19 Disinformation: A Multi-National, Whole of Society Perspective
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Ritu Gill, Rebecca Goolsby, Ritu Gill, and Rebecca Goolsby
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- COVID-19 Pandemic, 2020-, Disinformation, COVID-19 Pandemic, 2020- , in mass media
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The COVID-19 pandemic is not only a threat to our health and economy, but also has strong implications for defence and security. Indeed, defence leaders have highlighted a second fight surrounding the spread of COVID-19, namely disinformation and preparing to face adversaries willing to exploit the public health crisis for nefarious purposes. The current pandemic is a breeding ground for the propagation of disinformation, as it represents the first major global health event in which large social media platforms have become the main distributor of information. This multi-national edited volume consists of contributions from Defence Science, academia and industry, including NATO Headquarters, United States, Netherlands, Singapore, United Kingdom and Norway. The content is aimed at a diverse audience, including NATO members, researchers from defence and security organizations, academics, and militaries including analysts and practitioners, as well as policy makers. This volume focuses onvarious aspects of COVID-19 disinformation, including identifying global dominant disinformation narratives and the methods used to spread disinformation, examining COVID-19 disinformation within the broader context of the cognitive domain, examining the psychological effects of COVID-19 disinformation and COVID-19 disinformation on instant messaging platforms, along with examining various countermeasures to disinformation.
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- 2022
13. Phytoremediation : Management of Environmental Contaminants, Volume 6
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Abid A. Ansari, Sarvajeet Singh Gill, Ritu Gill, Guy R. Lanza, Lee Newman, Abid A. Ansari, Sarvajeet Singh Gill, Ritu Gill, Guy R. Lanza, and Lee Newman
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- Environmental management, Phytoremediation, Pollutants
- Abstract
This text details the plant-assisted remediation method, “phytoremediation”, which involves the interaction of plant roots and associated rhizospheric microorganisms for the remediation of soil contaminated with high levels of metals, metalloids, fuel and oil hydrocarbons, nano particles, pesticides, solvents, organic compounds and various other contaminants. Many chapters highlight and compare the efficiency and economic advantages of phytoremediation and nano-phytoremediation to currently practiced soil and water treatment practices.Volume 6 of Phytoremediation: Management of Environmental Contaminants continues the series. Taken together, the six volumes provide a broad–based global synopsis of the current applications of phytoremediation using plants and the microbial communities associated with their roots to decontaminate terrestrial and aquatic ecosystems.
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- 2019
14. The IASLC Lung Cancer Staging Project : a renewed call to participation
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Dorothy J. Giroux, Paul Van Schil, Hisao Asamura, Ramón Rami-Porta, Kari Chansky, John J. Crowley, Valerie W. Rusch, Kemp Kernstine, Valerie Rusch, Luiz Henrique Araujo, Paul Beckett, David Beer, Pietro Bertoglio, Ricardo Beyruti, Andrea Bille, Vanessa Bolejack, Souheil Boubia, Elisabeth Brambilla, James D. Brierley, A.K. Cangir, David Carbone, John Crowley, Gail Darling, Frank Detterbeck, Xavier Benoit D’Journo, Jessica Donnington, Wilfried Eberhardt, John Edwards, Jeremy Erasmus, Wentao Fang, Dean Fennell, Kwun Fong, Françoise Galateau-Salle, Oliver Gautschi, Ritu Gill, Dorothy Giroux, Jin Mo Goo, Seiki Hasegawa, Fred Hirsch, Hans Hoffman, Wayne Hofstetter, James Huang, Philippe Joubert, Keith Kerr, Young Tae Kim, Hong Kwan Kim, Hedy Kindler, Yolande Lievens, Hui Liu, Donald E. Low, Gustavo Lyons, Heber MacMahon, Mirella Marino, Edith Marom, José-María Matilla, Jan van Meerbeeck, Luis M. Montuenga, Andrew Nicholson, Anna Nowak, Isabelle Opitz, Meinoshin Okumura, Raymond U. Osarogiagbon, Harvey Pass, Marc de Perrot, Helmut Prosch, David Rice, Andreas Rimner, Enrico Ruffini, Shuji Sakai, Navneet Singh, Amy Stoll-D’Astice, Francisco Suárez, Ricardo M. Terra, William D. Travis, Ming S. Tsao, Paula Ugalde, Shun-ichi Watanabe, Jacinta Wiens, Ignacio Wistuba, Yasushi Yatabe, Liyan Jiang, Kaoru Kubota, Eric Lim, Paul Martin Putora, Akif Turna, Pier Luigi Filosso, Kazuya Kondo, Dong Kwan Kim, Giuseppe Giaccone, Marco Lucchi, Eugene Blackwell, Thomas Rice, William Travis, Andrew G. Nicholson, Ming Tsao, James Brierley, Jun Nakajima, Françoise Galateau, Bill Travis, Jim Mo Goo, Luis Montuenga, Hong Wei Wang, Katie Nishimura, Int Assoc Study Lung Canc Staging, and Eberhardt, Wilfried (Beitragende*r)
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Male ,0301 basic medicine ,Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,Lung Neoplasms ,Databases, Factual ,Electronic data capture ,Medizin ,Lung cancer ,Lung cancer databases ,Lung cancer staging ,TNM classification ,Oncology ,03 medical and health sciences ,0302 clinical medicine ,Cancer control ,medicine ,Humans ,Neoplasm Staging ,business.industry ,Cancer ,medicine.disease ,030104 developmental biology ,030220 oncology & carcinogenesis ,Family medicine ,Female ,Human medicine ,Biostatistics ,business - Abstract
Over the past two decades, the International Association for the Study of Lung Cancer (IASLC) Staging Project has been a steady source of evidence-based recommendations for the TNM classification for lung cancer published by the Union for International Cancer Control and the American Joint Committee on Cancer. The Staging and Prognostic Factors Committee of the IASLC is now issuing a call for participation in the next phase of the project, which is designed to inform the ninth edition of the TNM classification for lung cancer. Following the case recruitment model for the eighth edition database, volunteer site participants are asked to submit data on patients whose lung cancer was diagnosed between January 1, 2011, and December 31, 2019, to the project by means of a secure, electronic data capture system provided by Cancer Research And Biostatistics in Seattle, Washington. Alternatively, participants may transfer existing data sets. The continued success of the IASLC Staging Project in achieving its objectives will depend on the extent of international participation, the degree to which cases are entered directly into the electronic data capture system, and how closely externally submitted cases conform to the data elements for the project. (C) 2018 International Association for the Study of Lung Cancer. Published by Elsevier Inc.
- Published
- 2018
15. Phytoremediation : Management of Environmental Contaminants, Volume 5
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Abid A. Ansari, Sarvajeet Singh Gill, Ritu Gill, Guy R. Lanza, Lee Newman, Abid A. Ansari, Sarvajeet Singh Gill, Ritu Gill, Guy R. Lanza, and Lee Newman
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- Phytoremediation
- Abstract
This text details the plant-assisted remediation method, “phytoremediation”, which involves the interaction of plant roots and associated rhizospheric microorganisms for the remediation of soil contaminated with high levels of metals, pesticides, solvents, radionuclides, explosives, crude oil, organic compounds and various other contaminants. Many chapters highlight and compare the efficiency and economic advantages of phytoremediation to currently practiced soil and water treatment practices.Volume 5 of Phytoremediation: Management of Environmental Contaminants provides the capstone of the series. Taken together, the five volumes provide a broad–based global synopsis of the current applications of phytoremediation using plants and the microbial communities associated with their roots to decontaminate terrestrial and aquatic ecosystems.
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- 2017
16. Phytoremediation : Management of Environmental Contaminants, Volume 4
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Abid A. Ansari, Sarvajeet Singh Gill, Ritu Gill, Guy R. Lanza, Lee Newman, Abid A. Ansari, Sarvajeet Singh Gill, Ritu Gill, Guy R. Lanza, and Lee Newman
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- Plant physiology, Environmental chemistry, Soil science, Life sciences, Botanical chemistry, Plant ecology, Soil conservation, Pollution
- Abstract
This text details the plant-assisted remediation method, “phytoremediation,'which involves the interaction of plant roots and associated rhizospheric microorganisms for the remediation of soil contaminated with high levels of metals, pesticides, solvents, radionuclides, explosives, crude oil, organic compounds and various other contaminants. Each chapter highlights and compares the beneficial and economical alternatives of phytoremediation to currently practiced soil removal and burial practices.
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- 2016
17. Phytoremediation : Management of Environmental Contaminants, Volume 3
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Abid Ali Ansari, Sarvajeet Singh Gill, Ritu Gill, Guy R. Lanza, Lee Newman, Abid Ali Ansari, Sarvajeet Singh Gill, Ritu Gill, Guy R. Lanza, and Lee Newman
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- Phytoremediation
- Abstract
This book details the plant-assisted remediation method, “phytoremediation”, which involves the interaction of plant roots and associated rhizospheric microorganisms for the remediation of soil contaminated with high levels of metals, pesticides, solvents, radionuclides, explosives, crude oil, organic compounds and various other contaminants. Each chapter highlights and compares the beneficial and economical alternatives of phytoremediation to currently practiced soil removal and burial practices.
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- 2016
18. Phytoremediation : Management of Environmental Contaminants, Volume 1
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Abid A. Ansari, Sarvajeet Singh Gill, Ritu Gill, Guy R. Lanza, Lee Newman, Abid A. Ansari, Sarvajeet Singh Gill, Ritu Gill, Guy R. Lanza, and Lee Newman
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- Pollutants, Phytoremediation
- Abstract
This text details the plant-assisted remediation method, “phytoremediation”, which involves the interaction of plant roots and associated rhizospheric microorganisms for the remediation of soil and water contaminated with high levels of metals, pesticides, solvents, radionuclides, explosives, nutrients, crude oil, organic compounds and various other contaminants. Each chapter highlights and compares the beneficial and economical alternatives of phytoremediation to currently practiced soil and water removal and burial practices.This book covers state of the art approaches in Phytoremediation written by leading and eminent scientists from around the globe. Phytoremediation: Management of Environmental Contaminants, Volume 1 supplies its readers with a multidisciplinary understanding in the principal and practical approaches of phytoremediation from laboratory research to field application.
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- 2015
19. Phytoremediation : Management of Environmental Contaminants, Volume 2
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Abid Ali Ansari, Sarvajeet Singh Gill, Ritu Gill, Guy R. Lanza, Lee Newman, Abid Ali Ansari, Sarvajeet Singh Gill, Ritu Gill, Guy R. Lanza, and Lee Newman
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- Biochemistry, Life sciences, Phytoremediation
- Abstract
This text details the plant-assisted remediation method, “phytoremediation”, which involves the interaction of plant roots and associated rhizospheric microorganisms for the remediation of soil contaminated with high levels of metals, pesticides, solvents, radionuclides, explosives, crude oil, organic compounds and various other contaminants. Each chapter highlights and compares the beneficial and economical alternatives of phytoremediation to currently practiced soil removal and burial practices.This book covers state of the art approaches in Phytoremediation written by leading and eminent scientists from around the globe. Phytoremediation: Management of Environmental Contaminants, Volume 1 supplies its readers with a multidisciplinary understanding in the principal and practical approaches of phytoremediation from laboratory research to field application.
- Published
- 2015
20. Superoxide dismutase-mentor of abiotic stress tolerance in crop plants
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Surendra Chandra Sabat, Sarvajeet Singh Gill, Masayuki Fujita, Panchanand Mishra, Ritu Gill, Mirza Hasanuzzaman, Narendra Tuteja, Naser A. Anjum, and Sandeep Yadav
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Health, Toxicology and Mutagenesis ,Context (language use) ,Abiotic stresses ,Superoxide dismutase ,Biology ,medicine.disease_cause ,Antioxidants ,Crop ,Stress, Physiological ,Botany ,medicine ,Environmental Chemistry ,Plant Proteins ,chemistry.chemical_classification ,Abiotic component ,Reactive oxygen species ,Superoxide Dismutase ,Abiotic stress ,SODgenetic engineering ,Hydrogen Peroxide ,General Medicine ,Plants ,Adaptation, Physiological ,Pollution ,chemistry ,Oxidative stress ,biology.protein ,Adaptation - Abstract
Abiotic stresses impact growth, development, and productivity, and significantly limit the global agricultural productivity mainly by impairing cellular physiology/biochemistry via elevating reactive oxygen species (ROS) generation. If not metabolized, ROS (such as O2 •−, OH•, H2O2, or 1O2) exceeds the status of antioxidants and cause damage to DNA, proteins, lipids, and other macromolecules, and finally cellular metabolism arrest. Plants are endowed with a family of enzymes called superoxide dismutases (SODs) that protects cells against potential consequences caused by cytotoxic O2 •− by catalyzing its conversion to O2 and H2O2. Hence, SODs constitute the first line of defense against abiotic stress-accrued enhanced ROS and its reaction products. In the light of recent reports, the present effort: (a) overviews abiotic stresses, ROS, and their metabolism; (b) introduces and discusses SODs and their types, significance, and appraises abiotic stress-mediated modulation in plants; (c) analyzes major reports available on genetic engineering of SODs in plants; and finally, (d) highlights major aspects so far least studied in the current context. Literature appraised herein reflects clear information paucity in context with the molecular/genetic insights into the major functions (and underlying mechanisms) performed by SODs, and also with the regulation of SODs by post-translational modifications. If the previous aspects are considered in the future works, the outcome can be significant in sustainably improving plant abiotic stress tolerance and efficiently managing agricultural challenges under changing climatic conditions.
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- 2015
21. DNA Damage and Repair in Plants under Ultraviolet and Ionizing Radiations
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Ritu Gill, Sarvajeet Singh Gill, Narendra Tuteja, Manoranjan Jha, and Naser A. Anjum
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DNA Repair ,DNA damage ,DNA repair ,Ultraviolet Rays ,lcsh:Medicine ,Pyrimidine dimer ,Context (language use) ,Review Article ,Biology ,Photochemistry ,medicine.disease_cause ,lcsh:Technology ,General Biochemistry, Genetics and Molecular Biology ,chemistry.chemical_compound ,Radiation, Ionizing ,medicine ,lcsh:Science ,General Environmental Science ,lcsh:T ,lcsh:R ,General Medicine ,Plants ,chemistry ,Pyrimidine Dimers ,Radiolysis ,lcsh:Q ,Energy source ,Deoxyribodipyrimidine Photo-Lyase ,Ultraviolet ,DNA ,Metabolic Networks and Pathways ,DNA Damage - Abstract
Being sessile, plants are continuously exposed to DNA-damaging agents present in the environment such as ultraviolet (UV) and ionizing radiations (IR). Sunlight acts as an energy source for photosynthetic plants; hence, avoidance of UV radiations (namely, UV-A, 315–400 nm; UV-B, 280–315 nm; and UV-C, •) and causes radiogenic damage to important cellular components. However, to maintain genomic integrity under UV/IR exposure, plants make use of several DNA repair mechanisms. In the light of recent breakthrough, the current minireview (a) introduces UV/IR and overviews UV/IR-mediated DNA damage products and (b) critically discusses the biochemistry and genetics of major pathways responsible for the repair of UV/IR-accrued DNA damage. The outcome of the discussion may be helpful in devising future research in the current context.
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- 2015
22. Glutathione and glutathione reductase: a boon in disguise for plant abiotic stress defense operations
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Mirza Hasanuzzaman, Iqbal Ahmad, Naser A. Anjum, Sarvajeet Singh Gill, Narendra Tuteja, Ritu Gill, Eduarda Pereira, and Dipesh Kumar Trivedi
- Subjects
Crops, Agricultural ,Antioxidant ,Physiology ,medicine.medical_treatment ,Glutathione reductase ,Context (language use) ,Plant Science ,Biology ,medicine.disease_cause ,chemistry.chemical_compound ,Plant Cells ,Genetics ,medicine ,Plant defense against herbivory ,Disease Resistance ,Plant Diseases ,Plant Proteins ,chemistry.chemical_classification ,Reactive oxygen species ,Abiotic stress ,food and beverages ,Glutathione ,Adaptation, Physiological ,Signaling ,Oxidative Stress ,Glutathione Reductase ,Biochemistry ,chemistry ,Redox regulation ,Reactive Oxygen Species ,Oxidative stress - Abstract
Abiotic stresses such as salinity, drought, clilling, heavy metal are the major limiting factors for crop productivity. These stresses induce the overproduction of reactive oxygen species (ROS) which are highly reactive and toxic, which must be minimized to protect the cell from oxidative damage. The cell organelles, particularly chloroplast and mitochondria are the major sites of ROS production in plants where excessive rate of electron flow takes place. Plant cells are well equipped to efficiently scavenge ROS and its reaction products by the coordinated and concerted action of antioxidant machinery constituted by vital enzymatic and non-enzymatic antioxidant components. Glutathione reductase (GR, EC 1.6.4.2) and tripeptide glutathione (GSH, γ-Glutamyl-Cysteinyl-Glycine) are two major components of ascorbate-glutathione (AsA-GSH) pathway which play significant role in protecting cells against ROS and its reaction products-accrued potential anomalies. Both GR and GSH are physiologically linked together where, GR is a NAD(P)H-dependent enzymatic antioxidant and efficiently maintains the reduced pool of GSH - a cellular thiol. The differential modulation of both GR and GSH in plants has been widely implicated for the significance of these two enigmaticantioxidants as major components of plant defense operations. Considering recent informations gained through molecular-genetic studies, the current paper presents an overview of the structure, localization, biosynthesis (for GSH only), discusses GSH and GR significance in abiotic stress (such as salinity, drought, clilling, heavy metal)-exposed crop plants and also points out unexplored aspects in the current context for future studies. SSG, RG, and NT would like to acknowledge the receipt of funds from DBT, CSIR and UGC, Govt. of India, New Delhi. NAA (SFRH/BPD/84671/2012), IA and EP are grateful to the Portuguese Foundation for Science and Technology (FCT) and the Aveiro University Research Institute/Centre for Environmental and Marine Studies (CESAM) for partial financial supports. Authors apologize if some references related to the main theme of the current review could not be cited due to space constraint. published
- Published
- 2013
23. Molecular cloning and production of type III Hsp40 protein co-chaperone PfZRF1 of human malaria parasite Plasmodium falciparum
- Author
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Ritu Gill, Sarvajeet Singh Gill, and Priyanka Chahar
- Subjects
Microbiology (medical) ,biology ,education ,Plasmodium falciparum ,General Medicine ,Molecular cloning ,biology.organism_classification ,medicine.disease ,Virology ,Co-chaperone ,Infectious Diseases ,parasitic diseases ,medicine ,Parasite hosting ,Malaria - Full Text
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