Physiological and transcriptional analyses reveal formation of memory under recurring drought stresses in seedlings of cotton (Gossypium hirsutum)

文献类型： 外文期刊

第一作者： Tian, Zailong

作者： Tian, Zailong;Sun, Yaru;Chen, Baojun;Pan, Zhaoe;Wang, Zhenzhen;Pang, Baoyin;He, Shoupu;Du, Xiongming;Tian, Zailong;Li, Kun;Sun, Yaru;Miao, Yuchen;Tian, Zailong;Du, Xiongming

作者机构：

关键词： Gossypium hirsutum; Drought stress memory; Memory genes; Intergenerational inheritance

期刊名称：PLANT SCIENCE （ 影响因子：5.2； 五年影响因子：5.7 ）

ISSN： 0168-9452

年卷期： 2024 年 338 卷

页码：

收录情况： SCI

摘要： Plants are frequently subjected to a range of environmental stresses, including drought, salinity, cold, pathogens, and herbivore attacks. To survive in such conditions, plants have evolved a novel adaptive mechanism known as 'stress memory'. The formation of stress memories necessitates coordinated responses at the cellular, genetic/ genomic, and epigenetic levels, involving altered physiological responses, gene activation, hyper-induction and chromatin modification. Cotton (Gossypium spp.) is an important economic crop with numerous applications and high economic value. In this study, we establish G. hirsutum drought memory following cycles of mild drought and re-watering treatments and analyzed memory gene expression patterns. Our findings reveal the physiological, biochemical, and molecular mechanisms underlying drought stress memory formation in G. hirsutum. Specifically, H3K4me3, a histone modification, plays a crucial role in regulating [+ /+ ] transcriptional memory. Moreover, we investigated the intergenerational inheritance of drought stress memory in G. hirsutum. Collectively, our data provides theoretical guidance for cotton breeding.

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