Drought stress remains a serious concern in L. var , cultivar Satabdi (IET4786) production, particularly during the earliest growth phases, ultimately affecting yield due to the recent trend of delayed rain arrival in West Bengal, India. This study aimed to develop a cost-effective strategy to improve the drought tolerance capacity of rice seedlings by priming the seeds with flavonoid-enriched extract (FEE) of French marigold () petals to withstand the initial drought milieu. The morpho-physiological and biochemical responses of rice seedlings were evaluated to perceive the priming efficacy in alleviating water stress-induced untoward effects. The findings revealed that mechanical priming of the IET4786 seeds with FEE (50 mg/mL for 30 min) significantly improved seedling survival against initial drought stress for 14 days. After 24 h of recovery from drought stress, the primed seed-derived seedlings exhibited significantly improved morphological, physiological, biochemical, and redox parameters compared to the seedlings derived from unprimed seeds under net house conditions. In search of mechanistic insights, seed priming significantly increased proline content by endorsing Δ-pyrroline-5-carboxylate synthetase activities, endorsed methylglyoxal clearance homeostasis by improving glyoxalase I and II activities through restoring glutathione (GSH) level, and enhanced polyamine accumulation in the leaves of seedlings to endure drought stress.
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http://dx.doi.org/10.1515/znc-2024-0093 | DOI Listing |
Tree Physiol
January 2025
Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, China.
Modulation of stomatal development and movement is a promising approach for creating water-conserving plants. Here, we identified and characterized the PagHCF106 gene of poplar (Populus alba × Populus glandulosa). The PagHCF106 protein localized predominantly to the chloroplast, and the PagHCF106 gene exhibited tissue-specific expression pattern.
View Article and Find Full Text PDFJ Insect Sci
January 2025
Department of Agricultural Sciences and Engineering, College of Agriculture, Tennessee State University, Otis L. Floyd Nursery Research Center, McMinnville, TN, USA.
The role of flood and drought stress on Xylosandrus ambrosia beetle attacks and colonization in nursery trees with varying levels of water stress tolerance has not yet been studied. This study aimed to examine ambrosia beetle preference for tree species varying in their tolerance to water stress. Container-grown dogwoods, redbuds, and red maples were exposed to flood, drought, or sufficient water treatments for 28 d and beetle attacks were counted every third day.
View Article and Find Full Text PDFAnn Bot
January 2025
Institute of Botany, Czech Academy of Sciences, Dukelská 135, 379 01 Třeboň, Czech Republic.
Background And Aims: Understanding interspecific differences in plant growth rates and their internal and external drivers is key to predicting species responses to ongoing environmental changes. Annual growth rates vary among plants based on their ecological preferences, growth forms, ecophysiological adaptations, and evolutionary history. However, the relative importance of these factors remains unclear, particularly in high-mountain ecosystems experiencing rapid changes.
View Article and Find Full Text PDFFront Plant Sci
January 2025
School of Life Sciences, East China Normal University, Shanghai, China.
Frequent and extreme drought exerts profound effects on vegetation growth and production worldwide. It is imperative to identify key genes that regulate plant drought resistance and to investigate their underlying mechanisms of action. Long-chain fatty acids and their derivatives have been demonstrated to participate in various stages of plant growth and stress resistance; however, the effects of medium-chain fatty acids on related functions have not been thoroughly studied.
View Article and Find Full Text PDFJ Exp Bot
January 2025
Department of Plant Biology, University of Szeged, Közép fasor 52., H6726 Szeged, Hungary.
The beneficial effects of priming technology are aimed at the promotion of growth and development and stress tolerance in plants. Different seed pre-treatment and vegetative priming approaches (osmo-, chemical, physical, hormonal, redox treatments) increase the level of nitric oxide (NO) being an active contributor to growth regulation and defence responses. On the other hand, seed pre-treatment or vegetative priming mainly with the NO donor, sodium nitroprusside (SNP) helps to mitigate different abiotic stresses like salinity, cold, drought, excess metals.
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