Zhao Maoxiang, Li Jiajia, Shi Xiangneng, Sanaullah Malik M, Quan Yi, Guo Dinghan, Wang Lei, Wang Shiping
Department of Plant Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China.
Graduate School of Environmental and Life Science, Okayama University, Okayama, Japan.
Front Plant Sci. 2023 Dec 14;14:1274684. doi: 10.3389/fpls.2023.1274684. eCollection 2023.
Salinity is one of the major abiotic stresses besides drought and cold stress. The application of plant growth regulators (PGRs) is an effective method to mitigate yield losses caused by salinity. However, we investigated the effects of exogenous regulatory substances (γ-aminobutyric acid (GABA), salicylic acid (SA), and brassinolide (BR) on the growth and development of "Kyoho" grapevine under salt stress. The results showed that exogenous regulators GABA, SA, and BR alleviated the inhibition of grape growth by saline stress and regulated the effects of salinity stress on grape fruit development and quality. All three regulators significantly increased fruit set, cross-sectional diameter, weight per unit, and anthocyanin content. In conclusion, this study provides a theoretical basis for grape production practices by using exogenous aminobutyric acid (GABA), salicylic acid (SA), and brassinolide (BR) to mitigate the hazards of salinity stress.
盐胁迫是除干旱和低温胁迫之外的主要非生物胁迫之一。施用植物生长调节剂（PGR）是减轻盐胁迫导致产量损失的有效方法。然而，我们研究了外源调节物质（γ-氨基丁酸（GABA）、水杨酸（SA）和油菜素内酯（BR））对盐胁迫下“巨峰”葡萄生长发育的影响。结果表明，外源调节剂GABA、SA和BR减轻了盐胁迫对葡萄生长的抑制，并调节了盐胁迫对葡萄果实发育和品质的影响。这三种调节剂均显著提高了坐果率、横径、单果重和花青素含量。总之，本研究为通过使用外源氨基丁酸（GABA）、水杨酸（SA）和油菜素内酯（BR）减轻盐胁迫危害的葡萄生产实践提供了理论依据。
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