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How GA3 reduce drought stress in rice crop?

Trichoderma harzianum

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GA3, a plant growth regulator, plays a crucial role in reducing drought stress in rice crops. Research indicates that the application of GA3, along with other beneficial components like biochar, silicon, and potassium phosphate, significantly enhances rice growth under salt and drought stresses . Additionally, studies have shown that the treatment of drought-stressed rice seeds with a combination of KCl, thiourea, and GA3 resulted in improved germination and early seedling growth, highlighting the positive impact of GA3 in alleviating drought stress . Furthermore, the presence of GA3-producing rhizospheric fungus Curvularia lunata ARJ2020 (AR11) has been linked to enhanced rice growth under salt and drought stresses, emphasizing the role of GA3 in mitigating abiotic stresses in rice plants .

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Journal Article•DOI Synergistic effect of KCl, thiourea, GA3 and SA on the germination and early seedling growth enhancement of drought-stressed Malaysian indica rice cv. MR220 S. N. Mahadi, Rosimah Nulit, M.A. Mohtar, Mohd Hafiz Ibrahim, N. I. Ab. Ghani - Show less +4 more 01 Oct 2020-Biocatalysis and agricultural biotechnology 4 Citations	GA3, when combined with KCl and TU, enhances germination and early seedling growth in drought-stressed rice, as shown in the study on Malaysian indica rice cv. MR220, improving plant performance under drought conditions.
Journal Article•DOI Mitigation of drought stress in rice crop with plant growth-promoting abiotic stress-tolerant rice phyllosphere bacteria Devarajan Arun K, K. G. Sabarinathan, Muthukrishnan Gomathy, Rengasamy Kannan, Dananjeyan Balachandar - Show less +4 more 15 Jul 2020-Journal of Basic Microbiology 30 Citations	GA3 (gibberellic acid) production by Bacillus endophyticus PB3, Bacillus altitudinis PB46, and Bacillus megaterium PB50 aids in reducing drought stress in rice by promoting growth and enhancing stress tolerance.
Open access•Journal Article•DOI The Combined Inoculation of Curvularia lunata AR11 and Biochar Stimulates Synthetic Silicon and Potassium Phosphate Use Efficiency, and Mitigates Salt and Drought Stresses in Rice Arjun Adhikari, Muhammad Aaqil Khan, Muhammad Imran, Ko-Eun Lee, Sang-Mo Kang, Jin Young Shin, Gil-Jae Joo, Murtaza Khan, Byung-Wook Yun, In-Jung Lee - Show less +9 more 03 Mar 2022-Frontiers in Plant Science 6 Citations	GA3, produced by the fungus AR11, reduces drought stress in rice by enhancing plant growth and regulating stress-responsive genes, ultimately improving plant tolerance to drought conditions.
Open access•Journal Article•DOI Alleviating drought stress in rice plant through intervention of Trichoderma spp. Debkumar Datta, A.K. Senapati, L. K. Behera, N. W. Zaidi, S. Kumar, Purnima Dey - Show less +5 more 15 May 2023-Journal of Environmental Biology	Not addressed in the paper.

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Related Questions

How does GA3 affect the germination of spores in fern?4 answersGA3 affects the germination of spores in ferns by promoting spore germination and gametophytic development. In the fern Christella dentata, the presence of GA3 at a concentration of 50 ppm leads to maximum spore germination and growth, while higher concentrations are lethal. Similarly, in Pteris tripartita, GA3 promotes spore germination, with the highest percentage of spores sprouting in the presence of GA3. In Athyrium multidentatum, the use of GA3 reduces spore germination time and enhances germination. In the rare fern Schizaea pusilla, GA3 promotes germination in red light, and GA3 is more effective than other gibberellins in promoting germination. However, in Anemia phyllitidis, GA3-induced germination is not enhanced by NO3-ions, suggesting that the germination response to GA3 is independent of the phytochrome-mediated signal-transduction chain.

How does rice respond to drought scenarios?4 answersRice responds to drought scenarios by activating its inherent drought resistance mechanisms, including escape, avoidance, tolerance, and recovery. These mechanisms involve various morpho-physiological, biochemical, and molecular responses. Understanding the traits contributing to physiological and molecular mechanisms of drought tolerance is crucial for developing drought-resistant rice varieties. Significant progress has been made in this area, with research focusing on quantitative trait loci (QTLs), transcription factors (TFs), and genes associated with drought tolerance in rice. Studies have identified indicators of drought stress in rice, such as relative root length, relative root weight, and relative shoot weight at the germination stage, and root length and root dry weight at the seedling stage. Comparative analysis of drought-tolerant and drought-sensitive rice cultivars has revealed stress-responsive genes and pathways responsible for reproductive-stage drought tolerance. Additionally, transcriptome analysis has shown dynamic regulation of drought-responsive genes during rehydration, highlighting the potential role of nitrogen metabolism and phytohormone signaling in the drought stress response.

What are the effects of drought stress on plants?5 answersDrought stress has various effects on plants. It can lead to a reduction in growth, physiological and biochemical parameters, as well as a decrease in yield. Different plant species and cultivars may respond differently to drought stress. For example, in the study by "Context_1", the Local cultivar of red pepper showed more adverse effects compared to the Markofana cultivar. Drought stress can also affect carbon allocation in plants, as shown in the study by "Context_2" on banana plants. It was found that drought stress and the presence of suckers increased carbon allocation to storage tissues, but when both were present, starch accumulation was reduced. Additionally, drought stress can induce morphological, physiological, and biochemical modifications in plants, as discussed in "Context_3". Furthermore, drought stress can influence the production and accumulation of secondary plant metabolites, with some metabolites increasing and others decreasing under drought conditions, as highlighted in "Context_5".

Does GA3 is known to promote seed germination by breaking seed dormancy.?4 answersGA3 is known to promote seed germination by breaking seed dormancy. Studies on Eucommia ulmoides Oliver, Panax notoginseng (Burk) F.H. Chen, Torilis scabra, and wild castor beanhave shown that exogenous application of GA3 significantly increases the germination rate and shortens the dormancy period. In Eucommia ulmoides Oliver, treatment with GA3 and warm water soaking resulted in a higher germination rate compared to untreated seeds. Similarly, in Panax notoginseng (Burk) F.H. Chen, GA3 treatment promoted germination and shortened the after-ripening process. Torilis scabra seeds with physiological dormancy showed increased germination after GA3 treatment. In wild castor bean, GA3 treatment improved germination and seedling growth. These findings suggest that GA3 is effective in breaking seed dormancy and promoting germination in various plant species.

What are the effects of drought on rice yield?4 answersDrought stress has significant negative effects on rice yield. It leads to reduced plant height, tiller number, productive tillers, plant biomass, and grain yield. Drought stress also increases the number of unfilled grains, negatively affecting the final yield. Additionally, drought stress decreases the photosynthetic rate and chlorophyll content, resulting in reduced spikelet fertility rate and overall yield. The intensity of drought and the duration of stress experienced by the rice plants further determine the extent of yield loss. However, certain rice varieties show tolerance to drought stress and exhibit better photosynthesis ability, leading to a higher number of filled grains per panicle and increased yield. Developing drought-tolerant rice varieties through genetic improvement is crucial for mitigating the negative impact of drought on rice yield.

How does hydroxyapatite affect drought stress in plants?3 answersلم يتم ذكر هيدروكسيباتيت في أي من الملخصات المقدمة.

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