Effects of exogenous plant regulators on growth and development of "Kyoho" grape under salt alkali stress

Maoxiang Zhao; Jiajia Li; Xiangneng Shi; M Sanaullah Malik; Yi Quan; Dinghan Guo; Lei Wang; Shiping Wang

doi:10.3389/fpls.2023.1274684

Effects of exogenous plant regulators on growth and development of "Kyoho" grape under salt alkali stress

Front Plant Sci. 2023 Dec 14:14:1274684. doi: 10.3389/fpls.2023.1274684. eCollection 2023.

Authors

Maoxiang Zhao^#^{1

2}, Jiajia Li^#¹, Xiangneng Shi^{1

3}, M Sanaullah Malik¹, Yi Quan¹, Dinghan Guo¹, Lei Wang¹, Shiping Wang¹

Affiliations

¹ Department of Plant Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China.
² Graduate School of Environmental and Life Science, Okayama University, Okayama, Japan.
³ Sinochem Agriculture Holdings, Beijing, China.

^# Contributed equally.

Abstract

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.

Keywords: brassinolide; fruit quality; grapevine growth; salicylic acid; salt alkali stress; γ-aminobutyric acid.

Grants and funding

The author(s) declare financial support was received for the research, authorship, and/or publication of this article. This study was supported by Action Plan for Science and Technology Innovation of Shanghai Science and Technology Commission (Grant No. 22015820400), Ningxia Hui Autonomous Region Key Project of Research and Development Plan (Grant No. 2021BEF02015), the Work station for characteristic grape industries in Wenping Xu plateau, Yunnan (Grant No.YSZJGZZ-2021061), Jiaxing Science and Technology Commissioner Special Project (K2022C010), and The China Agriculture Research System of MOF and MARA (CARS-29-ZP-7).