Brassinosteroid Supplementation Alleviates Chromium Toxicity in Soybean (Glycine max L.) via Reducing Its Translocation

被引:15
作者
Basit, Farwa [1 ]
Bhat, Javaid Akhter [2 ]
Hu, Jin [1 ]
Kaushik, Prashant [3 ]
Ahmad, Ajaz [4 ]
Guan, Yajing [1 ]
Ahmad, Parvaiz [5 ]
机构
[1] Zhejiang Univ, Adv Seed Inst, Coll Agr & Biotechnol, Hangzhou 310058, Peoples R China
[2] Jiangsu Univ, Int Genome Ctr, Zhenjiang 212013, Peoples R China
[3] Univ Politecn Valencia, Inst Conservac Mejora Agrodiversidad Valenciana, Valencia 46022, Spain
[4] King Saud Univ, Coll Pharm, Dept Clin Pharm, Riyadh 11451, Saudi Arabia
[5] GDC Pulwama, Dept Bot, Srinagar 192301, Jammu And Kashm, India
来源
PLANTS-BASEL | 2022年 / 11卷 / 17期
基金
海南省自然科学基金;
关键词
foliar spray; stress tolerance; oxidative damages; soybean; metal uptake; CR-TOLERANT; STRESS; CADMIUM; ACID; METABOLISM; EXPRESSION; GROWTH; CHLOROPLASTS; GLUTATHIONE; CULTIVARS;
D O I
10.3390/plants11172292
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Chromium (Cr) phytotoxicity severely inhibits plant growth and development which makes it a prerequisite to developing techniques that prevent Cr accumulation in food chains. However, little is explored related to the protective role of brassinosteroids (BRs) against Cr-induced stress in soybean plants. Herein, the morpho-physiological, biochemical, and molecular responses of soybean cultivars with/without foliar application of BRs under Cr toxicity were intensely investigated. Our outcomes deliberated that BRs application noticeably reduced Cr-induced phytotoxicity by lowering Cr uptake (37.7/43.63%), accumulation (63.92/81.73%), and translocation (26.23/38.14%) in XD-18/HD-19, plant tissues, respectively; besides, improved seed germination ratio, photosynthetic attributes, plant growth, and biomass, as well as prevented nutrient uptake inhibition under Cr stress, especially in HD-19 cultivar. Furthermore, BRs stimulated antioxidative defense systems, both enzymatic and non-enzymatic, the compartmentalization of ion chelation, diminished extra production of reactive oxygen species (ROS), and electrolyte leakage in response to Cr-induced toxicity, specifically in HD-19. In addition, BRs improved Cr stress tolerance in soybean seedlings by regulating the expression of stress-related genes involved in Cr accumulation, and translocation. Inclusively, by considering the above-mentioned biomarkers, foliar spray of BRs might be considered an effective inhibitor of Cr-induced damages in soybean cultivars, even in Cr polluted soil.
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页数:21
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