Exogenous application of acetic acid improves the survival rate of cotton by increasing abscisic acid and jasmonic acid contents under drought stress
文献类型： 外文期刊
作者： Li, Chenyang 1 ; Kong, Xiangqiang 1 ; Luo, Zhen 1 ; Li, Weijiang 1 ; Tang, Wei 1 ; Zhang, Dongmei 1 ; Ma, Changle 2 ; Dong, Hezhong 1 ;
作者机构： 1.Shandong Acad Agr Sci, Shandong Key Lab Cotton Culture & Physiol, Cotton Res Ctr, Jinan 250100, Peoples R China
2.Shandong Normal Univ, Sch Life Sci, Jinan 250014, Peoples R China
关键词： Abscisic acid; Acetic acid; Cotton; Drought stress; Jasmonic acid; Survival rate
期刊名称：ACTA PHYSIOLOGIAE PLANTARUM （ 影响因子：2.354； 五年影响因子：2.711 ）
ISSN： 0137-5881
年卷期： 2021 年 43 卷 2 期
页码：
收录情况： SCI
摘要： Prolonged drought stress could accelerate plant death. In this study the mechanisms of the acetic acid to increase the survival rate of cotton under drought stress were studied. Twenty-day-old cotton seedlings were grown for 9 days in the presence or absence of acetic acid under natural drought conditions in which the relative water content (RWC) of the soil decreased below 60% at 6 days after treatment (DAT). The water potential, photosynthesis (Pn), chlorophyll (Chl) content, stomatal conductance (Cond), and transpiration (Tr) of the control plants started to decrease at 6 DAT. However, acetic acid treatment caused a decrease in Cond and Tr at 3 DAT. Abscisic acid (ABA) and jasmonic acid (JA) contents and the expression of ABA biosynthesis genes (NCED2, NCED3, and NCED9) and JA biosynthesis genes (GhAOS6, GhLOX3, and GhOPR11) in cotton leaves were increased by acetic acid treatment at 3 DAT, and these variables were increased in control and acetic acid-treated plants at 6 and 9 DAT. These results indicate that acetic acid can increase ABA and JA contents by upregulating the expression of their biosynthesis genes, thus decreasing the Cond and Tr, and therefore, increasing the RWC of the soil and increasing the survival of cotton under drought stress.
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