Transcriptomic and Metabolomic Analyses Provide New Insights into the Response of Strawberry (Fragaria x ananassa Duch.) to Drought Stress

文献类型： 外文期刊

第一作者： Jiang, Lili

作者： Jiang, Lili;Wang, Xiaofang;Wu, Chong;Jiang, Lili;Wang, Xiaofang;Wu, Chong;Song, Ruimin;Wang, Jie

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关键词： strawberry; drought stress; transcriptomics; metabolomics

期刊名称：HORTICULTURAE （ 影响因子：3.1； 五年影响因子：3.1 ）

ISSN：

年卷期： 2024 年 10 卷 7 期

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收录情况： SCI

摘要： Strawberry plants have shallow roots and large leaves, which are highly sensitive to variations in water levels. To explore the physicochemical and molecular mechanisms of strawberry response to water stress, and provide new ideas for strawberry scientific irrigation, we measured the transpiration rate, fresh weight, biomass gain, and other indicators of potted "Zhangji" strawberry plants under drought and waterlogging treatments using a Plantarray system. Transcriptomic and metabolomic analyses of strawberry leaves following mild drought, moderate drought, severe drought, and rehydration treatments were performed to identify key genes and metabolites involved in the response to drought stress. Below a certain threshold, the transpiration rate of strawberry plants was significantly lower after the deficit irrigation treatment than the conventional water treatment. Transcriptome analysis revealed that genes involved in oxidoreductase activity and in sulfur and nitrogen metabolism were up-regulated, as well as starch and sucrose. Strawberry plants secrete various endogenous growth hormones to maintain their normal growth under drought stress. The syntheses of salicylic acid (SA) and abscisic acid (ABA) were up-regulated in the mild and moderate drought treatments. However, the syntheses of 1-aminocyclopropanecarboxylic acid (ACC) and indole-3-acetic acid (IAA) were down-regulated in severe drought treatment and up-regulated in rehydration after severe drought treatment.

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