Identification and expression analysis of expansin gene family in Salvia miltiorrhiza

Author:

Li Yunyun,Li Bin,Pang Qiyue,Lou Yaoyu,Wang Donghao,Wang ZhezhiORCID

Abstract

Abstract Background Expansins (EXP) are important enzymes that are involved in the extension of plant cells and regulation of root configurations, which play important roles in resisting various stresses. As a model medicinal plant, Salvia miltiorrhiza is well recognized for treating coronary heart disease, myocardial infection, and other cardiovascular and cerebrovascular diseases; however, the SmEXP gene family has not yet been analyzed. Methods The SmEXP family was systematically analyzed using bioinformatics. Quantitative real-time PCR was employed to analyze the tissue expression patterns of the SmEXP family, as well as its expression under abscisic acid (ABA) treatment and abiotic stress. Subcellular localization assay revealed the localization of SmEXLA1, SmEXLB1, and SmEXPA2. Results This study identified 29 SmEXP that belonged to four different subfamilies. SmEXP promoter analysis suggested that it may be involved in the growth, development, and stress adaptation of S. miltiorrhiza. An analysis of the expression patterns of SmEXP revealed that ABA, Cu2+, and NaCl had regulatory effects on its expression. A subcellular localization assay showed that SmEXLA1 and SmEXLB1 were located on the nucleus and cell membrane, while SmEXPA2 was located on the cell wall. Conclusion For this study, the SmEXP family was systematically analyzed for the first time, which lays a foundation for further elucidating its physiological and biological functionality.

Funder

The National Natural Science Foundation of China

The Fundamental Research Funds for the Central Universities

The Project of Shaanxi Science and Technology Department

The Basic Research Project of Shaanxi Academy of Sciences

Publisher

Springer Science and Business Media LLC

Subject

Complementary and alternative medicine,Pharmacology

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