数字农科院2.0

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

文献类型： 外文期刊

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

作者机构：

关键词： Alfalfa;Alkali stress;Metabolomics;Transcriptomics

期刊名称： Plant Physiology and Biochemistry

ISSN： 0981-9428

年卷期： 2024 年 215 卷

页码：

收录情况： SCIE（2024版）

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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