De novo assembly of Amorpha fruticosa L. transcriptome in response to drought stress provides insight into the tolerance mechanisms

PeerJ

article

Xinzhu Sun¹  Songmiao Hu¹  Xin Wang¹  He Liu²  Yun wei Zhou³  Qingjie Guan¹ 

[1] Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, Northeast Forest University;Garden College, Northeast Forest University;College of Horticulture, Jilin Agricultural University

关键词: Amorpha fruticosa L.;    Drought stress;    Transcriptomic analysis;    Tolerance mechanisms;   

DOI  :  10.7717/peerj.11044

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

BackgroundAmorpha fruticosa L. is a deciduous shrub that is native to North America and has been introduced to China as an ornamental plant. In order to clarify the drought resistance characteristics of Amorpha fruticosa L. and excavate the related genes involved in drought resistance regulation pathway, the mechanism of drought resistance stress of Amorpha fruticosa L. was revealed by the changes of transcriptome of Amorpha fruticosa L. under drought stress.Through the changes of the transcriptome of Amorpha fruticosa L. under drought stress, the mechanism of anti-stress of Amorpha fruticosa L. could be revealed.MethodsDifferent concentrations of polyethylene glycol-6000 (PEG-6000) was used to simulate drought stress, and transcriptomic analysis was used to reveal the changes of gene expression patterns in Amorpha fruticosa L. seedlings.ResultsResults showed that Amorpha fruticosa L. seedlings were seriously affected by PEG-6000. As for the differently expressed genes (DEGs), most of them were up-regulated. The additional Go and KEGG analysis results showed that DEGs were functionally enriched in cell wall, signal transduction and hormonal regulation related pathways. DEGs like AfSOD, AfHSP, AfTGA, AfbZIP and AfGRX play roles in response to drought stress.ConclusionIn conclusion, Amorpha fruticosa L. seedlings were sensitive to drought, which was different from Amorpha fruticosa L. tree, and the genes functions in drought stress responses via ABA-independent pathways. The up-regulation of Salicylic acid signal related DEGs (AfTGA and AfPR-1) indicated that Salicylic acid play a key role in response to drought stress in Amorpha fruticosa L.

【 授权许可】

CC BY