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Integrated transcriptome and metabolome analysis revealed molecular regulatory mechanism of saline-alkali stress tolerance and identified bHLH142 in winter rapeseed ( Brassica rapa)

文献类型： 外文期刊

作者： Ma, Li 1 ; Lian, Yintao 2 ; Li, Shiyi 1 ; Fahim, Abbas Muhammad 1 ; Hou, Xianfei 3 ; Liu, Lijun 1 ; Pu, Yuanyuan 1 ; Yang, Gang 1 ; Wang, Wangtian 1 ; Wu, Junyan 1 ; Sun, Wancang 1 ;

作者机构： 1.Gansu Agr Univ, Coll Agron, State Key Lab Aridland Crop Sci, Lanzhou 730070, Peoples R China

2.Tarim Univ, Coll Informat Engn, Alar 843300, Peoples R China

3.Xinjiang Acad Agr Sci, Urumqi 830091, Peoples R China

关键词： Winter Brassica rapa; Saline-alkali stress tolerance; Transcriptome and metabolome

期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：8.5； 五年影响因子：8.7 ）

ISSN： 0141-8130

年卷期： 2025 年 295 卷

页码：

收录情况： SCI

摘要： Soil salinization is one of the main problems leading to a reduction in arable land area. In the present study, strongly salt-tolerant lines were screened for germination rates and physiological indices. The mechanism of saline-alkali stress tolerance in winter rapeseed was examined using transcriptome and metabolome analyses. The saline-alkali tolerant variety (SCKY-6-27) had higher SOD, POD, CAT, and soluble protein levels than the saline-alkali-sensitive variety, whereas the saline-alkali-tolerant variety showed lower MDA levels. Winter rapeseed responded to saline-alkali stress mainly by engaging in phytopathogen interactions, regulating starch and sucrose metabolism, activating the MAPK signaling pathway, and utilizing other pathways. Furthermore, WGCNA analysis showed that seven main pathways were involved, the most significant of which was the plant hormone signaling pathway. Combined analysis of the transcriptome and metabolome showed that the most significant pathways with regard to the enrichment of differentially expressed genes and differential metabolites under high saline-alkali stress conditions were starch, sucrose metabolism, and plant hormone signaling. Through comprehensive screening and analysis of rapeseed genes and metabolites under saline-alkali stress, changes in molecular mechanisms and metabolic pathways in rapeseed responding to saline-alkali stress were revealed, providing a new direction for the in-depth exploration of saline-alkali resistance mechanisms of rapeseed.

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