Multi-omics integrative analysis provided new insights into alkaline stress in alfalfa

文献类型： 外文期刊

第一作者： Li, Xianyang

作者： Li, Xianyang;Liu, Hao;He, Fei;Li, Mingna;Long, Ruicai;Kang, Junmei;Yang, Qingchuan;Lin, Chen;Li, Xianyang;Zi, Yunfei;Zhao, Guoqing;Zhu, Lihua;Hong, Ling;Wang, Shiqing

作者机构：

关键词： Alfalfa; Alkali stress; Transcriptomics; Metabolomics

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：5.7； 五年影响因子：6.4 ）

ISSN： 0981-9428

年卷期： 2024 年 215 卷

页码：

收录情况： SCI

摘要： Saline-alkali stress is one of the main abiotic stresses that limits plant growth. Salt stress has been widely studied, but alkaline salt degradation caused by NaHCO3 has rarely been investigated. In the present study, the alfalfa cultivar 'Zhongmu No. 1 ' was treated with 50 mM NaHCO3 (0, 4, 8, 12 and 24 h) to study the resulting enzyme activity and changes in mRNA, miRNA and metabolites in the roots. The results showed that the enzyme activity changed significantly after alkali stress treatment. The genomic analysis revealed 14,970 differentially expressed mRNAs (DEMs), 53 differentially expressed miRNAs (DEMis), and 463 differentially accumulated metabolites (DAMs). Combined analysis of DEMs and DEMis revealed that 21 DEMis negatively regulated 42 DEMs. In addition, when combined with Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis of DEMs and DAMs, we found that phenylpropanoid biosynthesis, flavonoid biosynthesis, starch and sucrose metabolism and plant hormone signal transduction played important roles in the alkali stress response. The results of this study further elucidated the regulatory mechanism underlying the plant response to alkali stress and provided valuable information for the breeding of new saline-alkaline tolerance plant varieties.

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