Publications of NIPGR Scientists

Permanent URI for this communityhttps://ndkr-library.nipgr.ac.in/handle/123456789/1

Browse

Start date: 2024Subject: search.filters.subject.cold stress

Search Results

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Deciphering cold stress resilience: multiomics insights in contrasting wheat genotypes from the western himalayas
    (John Wiley & Sons, 2026) Jan, Sofora; Jan, Farkhandah; Rathore, Mukesh; Singh, Yogita; Kapoor, Prexha; Chaturvedi, Palak; Ghatak, Arindam; Ramesh, Palakurthi; Kumar, Upendra; Prasad, Manoj; Kumar, Sundeep; Rustgi, Sachin; Weckwerth, Wolfram; Kalia, Sanjay; Varshney, Rajeev Kumar; Mir, Reyazul Rouf
    Cold stress threatens wheat productivity, particularly in regions with extreme climatic conditions. To elucidate the molecular mechanisms underlying wheat's response to cold stress, we performed a multiomics analysis integrating lipidomics, transcriptomics, proteomics and metabolomics. Our study focused on two wheat genotypes with contrasting cold tolerance levels, SKAU_52 (tolerant) and SKAU_4301 (susceptible) to capture genotype-specific responses under cold stress. Lipidomic analysis revealed significant changes in lipid composition, with unsaturated lipids such as digalactosyldiacyl glycerols (DGDGs) and monogalactosyldiacylglycerols (MGDGs) upregulated in response to cold stress. These lipids are associated with maintaining membrane fluidity, whereas saturated lipids were downregulated in the cold-tolerant genotype. Transcriptomics analysis provides a strong evidence that cold tolerance in wheat is governed by coordinated activation of the ICE-CBF-COR regulatory cascade, with the cold-tolerant genotype ‘SKAU_52’ showing stronger and more sustained induction across pathway tiers than the cold susceptible wheat genotype ‘SKAU_4301’. Similarly, proteomic data highlighted differential abundance of proteins involved in antioxidative defence, osmotic adjustment and signal transduction, including late embryogenesis abundant (LEA) proteins. Metabolome assessment revealed substantial alterations in carbohydrate and amino acid metabolism, with sucrose and amino acids such as hydroxyproline identified as key contributors to cold tolerance. Additionally, defence hormones such as salicylic acid (SA), jasmonic acid (JA) and abscisic acid (ABA) exhibited genotype-specific regulation with higher accumulation in cold-tolerant genotype. Overall, this integrated multi-omics approach provides novel insights into the complex molecular mechanisms underlying cold stress adaptation in wheat, supporting the development of resilient wheat varieties capable of thriving in challenging cold environments.
  • Thumbnail Image
    Item
    Editorial: Plant transcription factors associated with abiotic stress tolerance in crops and wild-relatives
    (Frontiers Media S.A., 2024) Puglia, Giuseppe Diego; Frugis, Giovanna; Yadav, Gitanjali
    Editorial on the Research Topic Plant transcription factors associated with abiotic stress tolerance in crop and wild-relatives Global climate change (GCC), by altering the intensity and frequency of potentially damaging weather events such as droughts, waterlogging, heat waves, and cold spells, has altered seasonal weather patterns, causing severe problems for plant crops and wildlife species (Cramer et al., 2011; Asseng et al., 2015; Minoli et al., 2019). To cope with these challenges, plants have evolved complex regulatory mechanisms that enable them to respond and adapt to changing environmental conditions, while maintaining a balance between optimal growth and stress (Eckardt et al., 2023). This Research Topic brings together several contributions that highlight the role of transcriptional regulation in plant responses to abiotic stresses and hypothesise its role in stress tolerance. The studies published in this Research Topic deal with well-recognised groups of transcription factors (TFs), but also with new ones whose association with the response to abiotic stresses has been demonstrated by recent molecular advances. This evidence allows us to shed light on the mechanisms by which plants respond to different stresses, with a focus on abiotic stresses such as salt, drought, cold, and waterlogging.