Institutional Publications

Permanent URI for this collectionhttps://ndkr-library.nipgr.ac.in/handle/123456789/11

Browse

Start date: 2020Subject: search.filters.subject.drought stress

Search Results

Now showing 1 - 5 of 5
  • Thumbnail Image
    Item
    Metabolism and signalling in pea (Pisum sativum) leaves exposed to drought and subsequent recovery
    (John Wiley & Sons, 2026) Pandey, Jayendra; Mantena, Chakradhar; Kumari, Aprajita; Singh, Pooja; Foyer, Christine H.; Gupta, Kapuganti Jagadis; Subramanyam, Rajagopal
    Uncovering the metabolic and molecular mechanisms involved in plant responses to drought and subsequent recovery, is essential to identify drought tolerance mechanisms that can be used to improve crop plants. Here we combine plant physiology and biochemistry, with gene expression, quantitative proteomics and metabolite profiling to identify the genetic and metabolic networks that operate in plants experiencing and recovering from drought. Network analysis of transcripts, proteins and metabolites revealed that certain biological processes such as the tricarboxylic acid cycle and lipid metabolism had a strong impact on the overall control of leaf responses to drought and recovery. The stimulation of carbohydrate oxidation pathways is demonstrated to be a key node in the generation of energy and precursors required to support diverse survival pathways of defence.
  • 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.
  • Thumbnail Image
    Item
    Role of transcriptional regulation in auxin-mediated response to abiotic stresses
    (Frontiers Media S.A., 2024) Marzi, Davide; Brunetti, Patrizia; Saini, Shashank Sagar; Yadav, Gitanjali; Puglia, Giuseppe Diego; Dello, Ioio Raffaele
    Global climate change (GCC) is posing a serious threat to organisms, particularly plants, which are sessile. Drought, salinity, and the accumulation of heavy metals alter soil composition and have detrimental effects on crops and wild plants. The hormone auxin plays a pivotal role in the response to stress conditions through the fine regulation of plant growth. Hence, rapid, tight, and coordinated regulation of its concentration is achieved by auxin modulation at multiple levels. Beyond the structural enzymes involved in auxin biosynthesis, transport, and signal transduction, transcription factors (TFs) can finely and rapidly drive auxin response in specific tissues. Auxin Response Factors (ARFs) such as the ARF4, 7, 8, 19 and many other TF families, such as WRKY and MADS, have been identified to play a role in modulating various auxin-mediated responses in recent times. Here, we review the most relevant and recent literature on TFs associated with the regulation of the biosynthetic, transport, and signalling auxin pathways and miRNA-related feedback loops in response to major abiotic stresses. Knowledge of the specific role of TFs may be of utmost importance in counteracting the effects of GCC on future agriculture and may pave the way for increased plant resilience.
  • Thumbnail Image
    Item
    Editorial: Silicon: A “Quasi-Essential” element’s role in plant physiology and development
    (Frontiers Media S.A., 2023) Manivannan, Abinaya; Soundararajan, Prabhakaran; Jeong, Byoung Ryong
    Silicon (Si) is the second most abundant element present in the Earth’s crust after oxygen, i.e., 28.8% in dry weight basis. Plants absorb Si in the form of orthosilicic acid [Si(OH)4]. Supplementation of Si has showed various beneficial effects on plants such as improved growth, yield, and tolerance against abiotic and biotic stress conditions. Owing to its benefits for plants, Si has been declared as a “Quasi-Essential” element. Accumulation of Si varies between plant species. Monocots such as rice accumulate approximately 10% of its dry weight, which is higher than essential elements such as nitrogen (N), phosphorus (P), and potassium (K). Application of Si has a remarkable impact against pathogens, pests, and insects invasion in several plant species (Song et al., 2021). Similarly, Si combats against various abiotic stresses such as drought, cold, salinity, UV-B, and heavy metals (Mir et al., 2022).
  • Thumbnail Image
    Item
    Dry root rot of chickpea: A disease favored by drought
    (American Phytopathological Society, 2022) Rai, Avanish; Irulappan, Vadivelmurugan; Senthil-Kumar, Muthappa
    Chickpea is an essential crop for protein nutrition and is grown around the world in rain-fed conditions. However, chickpea cultivation is under threat due to emerging diseases favored by drought stress. Dry root rot (DRR), an economically devastating disease, is an example. Chickpea-specific strains of a necrotic fungal phytopathogen, Macrophomina phaseolina, cause DRR. Microsclerotia of this fungus, which are capable of withstanding harsh environmental conditions, serve as primary inoculum. Initial symptoms are scattered necrotic spots in roots, progressing to rotting and withering lateral roots, accompanied by prematurely dried, straw-colored foliage. The recent rise in global temperature and worsening of drought spells have aggravated DRR outbreaks in chickpea. To date, DRR epidemiology has not been clarified in detail. Also, the literature lacks clarity on M. phaseolina taxonomy, morphology, disease progression, and diagnosis. In this article, research progress on patterns of DRR occurrence in the field and belowground and above-ground symptoms are clarified. In addition, the current understanding of taxonomy and management practices is elaborated. We also summarize knowledge of the impact of drought and high temperature on DRR severity. Further, we provide future perspectives on the importance of host resistance, QTL identification, genotype screening for the identification of resistant genotypes. The article proposes new research priorities and a corresponding plan for the mitigation of DRR.