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Physiological and transcriptomic analysis of the mangrove species Kandelia obovata in response to flooding stress

文献类型： 外文期刊

作者： Liu, Shuangshuang 1 ; Yang, Sheng 1 ; Liu, Huizi 1 ; Hu, Qingdi 1 ; Liu, Xing 1 ; Wang, Jinwang 1 ; Wang, Jiayu 1 ; Xin, Wenzhen 1 ; Chen, Qiuxia 1 ;

作者机构： 1.Zhejiang Acad Agr Sci, Zhejiang Inst Subtrop Crops, Wenzhou 325005, Peoples R China

2.Zhejiang Agr & Forestry Univ, Coll Forestry & Biotechnol, Hangzhou 311300, Peoples R China

3.Wenzhou Univ, Coll Life & Environm Sci, Wenzhou 325035, Peoples R China

关键词： Flooding stress; Physiological analysis; RNA-seq; Transcriptional regulation

期刊名称：MARINE POLLUTION BULLETIN （ 影响因子：5.8； 五年影响因子：6.5 ）

ISSN： 0025-326X

年卷期： 2023 年 196 卷

页码：

收录情况： SCI

摘要： Flooding stress on mangroves is growing continually with rising sea level. In this study, the physiology and transcriptome of the mangrove species Kandelia obovata under flooding stress were analyzed. With increasing inundation time, malondialdehyde (MDA), superoxide dismutase (SOD), glutathione (GSH), soluble sugar (SS), soluble protein (SP), and proline (Pro) content declined, while peroxidase (POD) and ascorbate peroxidase (APX) activity rose significantly. According to the KEGG pathway enrichment analysis, upregulated differentially expressed genes (DEGs) were enriched in the plant hormone signaling pathway. Furthermore, MYB44 and MYB108 genes from the MYB transcription factor family and RAP2.12, DREB2B, and ERF4 genes from the AP2/ ERF family were up-regulated under flooding conditions. A strong correlation was established between the expression levels of 12 DEGs under flooding stress and RNA sequencing data and was verified by qRT-PCR. These results provide new insights into the molecular mechanism of K. obovata in response to flooding stress.

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