Institutional Publications

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Author: search.filters.author.Bhatia, SabhyataHas files: No

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    Use of wild relatives in breeding programs to develop climate resilient wheat
    (Elsevier B.V., 2025) Chaurasia, Shiksha; Bhatia, Sabhyata
    The changing climate is having a significant impact on wheat production. This impact is not limited to increasing heat and drought stress but also includes other stresses, extreme weather events, and adverse conditions. To meet the growing food demands of a rising population, wheat breeding requires incorporating new, diversified resources that can produce high-quality wheat in various stressful environments. Wild relatives that are genetically similar are countless resources for improving yield-related traits and increasing tolerance to environmental stress. By using wild relatives to introduce genes into widely grown crops and contribute to environmental tolerance, we can develop crops resilient to climate change. In this chapter, we confer the impression of climate change on wheat production, as well as its wild relatives. We also highlight the challenges of hybridization, such as genetic distance, crossover frequencies, and selecting desirable traits while minimizing linkage drag. Finally, we deliver an index of valuable traits that could exist in these species and potentially be exploited through interspecific hybridization approaches. Here is an outline of how introgression works and what factors distress the breeding approach. We will also discuss optimization methods to increase the chances of recovering desired climate-resilient introgressive lines in wheat improvement programs.
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    Emerging roles of melatonin in mitigating salinity stress of legumes
    (Elsevier B.V., 2023) Chaurasia, Shiksha; Sapna, Sapna; Padhy, Asish Kumar; Bhatia, Sabhyata
    Melatonin (N-acetyl-5‑methoxy tryptamine) is a multi-functional molecule that is distributed in all living organisms and it performs essential roles in environmental stress tolerance. Salt stress enhances the rapid accumulation of melatonin in plants. Melatonin provides resistance to salt stress by manipulating various regulatory mechanisms at the biochemical and molecular levels throughout different plant developmental stages. Conventionally, legumes are consumed along with cereal-based staples to ensure wholesome nutritional intake. After confirming their nutritional and health-promoting effects, recently their demand is constantly increasing. This has guided the researchers to focus on developing legumes to cope with the changing climate scenario. In legumes, melatonin concentration varies from crop to crop under salt stress. This review emphasizes melatonin biosynthesis in plants with a special focus on legumes and their responses to endogenous and exogenous melatonin application. This manuscript also throws light on the physiological, biochemical, and molecular basis of melatonin-mediated salinity stress tolerance in legumes. The future directions for enhancing the salt stress tolerance in legumes are also discussed. As, Melatonin promotes germination potential, seedling biomass, photosynthesis rate, pod number, and yield of legumes under the influence of salinity stress, this review can provide insights for using melatonin to develop salt stress tolerant legumes for sustainable food production.
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    Understanding abiotic stress responses in lentil under changing climate regimes
    (Springer Nature Publishing AG, 2023) Singh, Baljinder; Padhy, Asish Kumar; Ambreen, Heena; Yadav, Manisha; Bhardwaj, Shubham; Singh, Gourav; Pandey, Vimal; Chakraborty, Anirban; Bhatia, Sabhyata
    Lentil (Lens culinaris Medik.) is a cool-season grain legume crop that is mainly cultivated across the semi-arid regions of Australia, South Asia, Africa, and North America. The crop is highly valued for its nutritional attributes such as dietary proteins (22–35%), carbohydrates, minerals, and fiber that play a significant role in alleviating malnutrition and micronutrient deficiencies across populations in developing countries. The last five decades have seen an upward trend in global production of lentils from 0.85 to 5.73 Mt. suggesting its increasing demand and utilization. However, various abiotic stresses such as drought, heat, cold, salinity, and nutrient deficiency impose severe threats to the global lentil yield and productivity. The current book chapter is an attempt to comprehend the morpho-physiological and biochemical changes occurring during these stresses and the developmental plasticity shown by the plant to counteract them. Furthermore, the current status of research focusing on the development of novel molecular and functional markers/tags, identification of candidate genes/QTLs responsible for abiotic stress tolerance, the intervention of high throughput genotyping and phenotyping platforms, development of populations and linkage maps, and omics studies have been discussed. Some tolerant germplasm and varieties developed through conventional and next-generation breeding approaches are also enlisted making the book chapter a concise platform for reports of abiotic stress tolerance in lentils.
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    In silico characterization of Thinopyrum elongatum-derived PsyE1 gene and validation in 7D/7E bread wheat introgression lines open avenues for carotenoid biofortification in wheat
    (Springer Nature Publishing AG, 2023) Padhy, Asish Kumar; Kaur, Parampreet; Singh, Baljinder; Kaur, Ravinder; Bhatia, Sabhyata; Shamshad, M.; Sharma, Himanshu; Kaur, Satinder; Srivastava, Puja; Sharma, Achla
    Current global scenario demands agricultural productivity of food grains to be kept at abreast with burgeoning population. Cereals constitute major food stuff for millennia and biofortification of new cereal varieties provides an opportunity to tackle global-scale malnutrition deficiencies without doing major shifts in the diets. Carotenoid biofortification in wheat grains has recently caught the attention of breeders owing to a myriad of health benefits offered by this micronutrient. Thinopyrum elongatum-derived PsyE1 gene encoding for Phytoene Synthase encoding Y gene, is a jackpot to enhance the carotenoid content in wheat. The present study is the first report deciphering detailed in silico characterization of Thinopyrum elongatum-derived PsyE1 gene and its protein. Promoter analysis of chloroplast localized PsyE1 gene provides clues about its possible role in stress resistance along with enhancing the carotenoid content in both durum and bread wheat. Homology, phylogeny and protein modelling studies of PsyE1 revealed its closer evolutionary relationship with barley and wheat, as well as provided a preliminary insight into catalytic and secondary structure of the protein. PCR validation of PsyE1 in 7D/7E bread wheat introgression lines further facilitated development of functional marker that could be used to track its introgression in elite bread wheat varieties. Overall, these detailed insilico insights into structure, function and validation of PsyE1 open doors for its deployment in to produce carotene biofortified hexaploid wheat through facilitating development of functional markers and MAS, as well as to elucidate its mechanism of action and regulation in response to external stimuli.