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Comparative transcriptome analysis of the garden asparagus (Asparagus officinalis L.) reveals the molecular mechanism for growth with arbuscular mycorrhizal fungi under salinity stress

文献类型: 外文期刊

作者: Zhang, Xuhong 1 ; Han, Changzhi 2 ; Gao, Huimin 1 ; Cao, Yanpo 1 ;

作者机构: 1.Hebei Acad Agr & Forestry Sci, Inst Cash Crops, Shijiazhuang 050051, Hebei, Peoples R China

2.Southwest Forestry Univ, Coll Biodivers Conservat & Utilizat, Kunming 650224, Yunnan, Peoples R China

3.Southwest Forestry Univ, Key Lab Forest Disaster Warning & Control Yunnan, Kunming, Yunnan, Peoples R China

关键词: Arbuscular mycorrhizal fungi; DEGs; Garden asparagus; Salinity stress; Transcriptome

期刊名称:PLANT PHYSIOLOGY AND BIOCHEMISTRY ( 影响因子:4.27; 五年影响因子:4.816 )

ISSN: 0981-9428

年卷期: 2019 年 141 卷

页码:

收录情况: SCI

摘要: Soil salinity is one of the most abiotic stress factors that severely affects the growth and development of many plants, which can ultimately threaten crop yield. Arbuscular mycorrhiza fungi (AMF) has been proven to be effective in mitigating salinity stress by symbiosis in many crops. Asparagus officinalis are perennial plants grown in saline-alkaline soil, however, limited information on their molecular mechanisms has restricted efficient application of AMF to garden asparagus under salinity stress. In this study, we conducted a transcriptome analysis on the leaves of garden asparagus to identify gene expression under salinity stress. Seedlings were grown in 4 treatments, including non-inoculated AMF using distilled water (NI), inoculated AMF using distilled water (AMF), non-inoculated with salinity stress (NI + S), and inoculated with salinity stress (AMF + S). A total of 6019 novel genes were obtained based on the reference-guided assembly of the garden asparagus transcriptome. Results revealed that 455 differentially expressed genes (DEGs) were identified when comparing NI + S to AMF + S. However, among the up-regulated DEGs, 41 DEGs were down-regulated, while 242 DEGs had no differences in their expression levels when comparing NI to NI + S. These DEGs' expression patterns may be key induced by AMF under salinity stress. Additionally, the GO and KEGG enrichment analyses of 455 DEGs revealed that these genes mainly participate in the improvement of the internal environment in plant cells, nitrogen metabolic-related processes, and possible photoprotection mechanisms. These findings provide insight into enhanced salinity stress adaptation by AMF inoculation, as well as salt-tolerant candidate genes for further functional analyses.

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