Integrated analysis of transcriptomics and metabolomics of garden asparagus (Asparagus officinalis L.) under drought stress
文献类型： 外文期刊
作者： Zhang, Xuhong 1 ; Han, Changzhi 3 ; Wang, Yubo 1 ; Liu, Tao 4 ; Liang, Yuqin 1 ; Cao, Yanpo 1 ;
作者机构： 1.Hebei Acad Agr & Forestry Sci, Inst Cash Crops, Shijiazhuang, Peoples R China
2.Shijiazhuang Landscape Management & Protect Ctr, Shijiazhuang, Peoples R China
3.Southwest Forestry Univ, Coll Biodivers Conservat, Kunming, Peoples R China
4.Hebei Univ Engn, Sch Landscape & Ecol Engn, Handan, Peoples R China
关键词： Drought stress; Transcriptome; Metabolome; Metabolic pathways; Asparagus
期刊名称：BMC PLANT BIOLOGY （ 影响因子：4.3； 五年影响因子：5.2 ）
ISSN： 1471-2229
年卷期： 2024 年 24 卷 1 期
页码：
收录情况： SCI
摘要： Background Drought is a leading environmental factor affecting plant growth. To explore the drought tolerance mechanism of asparagus, this study analyzed the responses of two asparagus varieties, namely, 'Jilv3' (drought tolerant) and 'Pacific Early' (drought sensitive), to drought stress using metabolomics and transcriptomics. Results In total, 2,567 and 7,187 differentially expressed genes (DEGs) were identified in 'Pacific Early' and 'Jilv3', respectively, by comparing the transcriptome expression patterns between the normal watering treatment and the drought stress treatment. These DEGs were significantly enriched in the amino acid biosynthesis, carbon metabolism, phenylpropanoid biosynthesis, and plant hormone signal transduction pathways. In 'Jilv3', DEGs were also enriched in the following energy metabolism-related pathways: citrate cycle (TCA cycle), glycolysis/gluconeogenesis, and pyruvate metabolism. This study also identified 112 and 254 differentially accumulated metabolites (DAMs) in 'Pacific Early' and 'Jilv3' under drought stress compared with normal watering, respectively. The amino acid, flavonoid, organic acid, and soluble sugar contents were more significantly enhanced in 'Jilv3' than in 'Pacific Early'. According to the metabolome and transcriptome analysis, in 'Jilv3', the energy supply of the TCA cycle was improved, and flavonoid biosynthesis increased. As a result, its adaptability to drought stress improved. Conclusions These findings help to better reveal the molecular mechanism underlying how asparagus responds to drought stress and improve researchers' ability to screen drought-tolerant asparagus varieties as well as breed new varieties.
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