Integrated metabolomic and transcriptomic study unveils the gene regulatory mechanisms of sugarcane growth promotion during interaction with an endophytic nitrogen-fixing bacteria
文献类型： 外文期刊
作者： Nong, Qian 1 ; Malviya, Mukesh Kumar 1 ; Solanki, Manoj Kumar 3 ; Lin, Li 1 ; Xie, Jinlan 1 ; Mo, Zhanghong 1 ; Wang, Zeping 1 ; Song, Xiupeng 1 ; Huang, Xin 1 ; Li, Changning 1 ; Li, Yangrui 1 ;
作者机构： 1.Minist Agr & Rural Affairs, Key Lab Sugarcane Biotechnol & Genet Improvement, Guangxi Key Lab Sugarcane Genet Improvement, Nanning 530007, Peoples R China
2.Guangxi Acad Agr Sci, Plant Protect Res Inst, Nanning 530007, Peoples R China
3.Univ Silesiaia Katowice, Inst Biol Biotechnol & Environm Protect, Fac Nat Sci, Plant Cytogenet & Mol Biol Grp, PL-40032 Katowice, Poland
关键词： Nitrogen-fixing bacteria; Sugarcane; Transcriptome; Metabolome; Flavonoid biosynthesis
期刊名称：BMC PLANT BIOLOGY （ 影响因子：5.3； 五年影响因子：5.9 ）
ISSN： 1471-2229
年卷期： 2023 年 23 卷 1 期
页码：
收录情况： SCI
摘要： BackgroundSugarcane growth and yield are complex biological processes influenced by endophytic nitrogen-fixing bacteria, for which the molecular mechanisms involved are largely unknown. In this study, integrated metabolomic and RNA-seq were conducted to investigate the interaction between an endophytic bacterial strain, Burkholderia GXS16, and sugarcane tissue culture seedlings.ResultsDuring treatment, the colonization of GXS16 in sugarcane roots were determined, along with the enhanced activities of various antioxidant enzymes. Accordingly, 161, 113, and 37 differentially accumulated metabolites (DAMs) were found in the pairwise comparisons of adjacent stages. In addition, transcriptomic analyses obtained 1,371 (IN-vs-CN), 1,457 (KN-vs-IN), and 365 (LN-vs-KN) differentially expressed genes (DEGs), which were mainly involved in the pathways of glutathione metabolism and carbon metabolism. We then assessed the pattern of metabolite accumulation and gene expression in sugarcane during GXS16 colonization. The results showed that both DAMs and DGEs in the upregulated expression profiles were involved in the flavonoid biosynthesis pathway. Overall, p-coumaroyl-CoA in sugarcane roots transferred into homoeriodictyol chalcone and 5-deoxyleucopelargonidin due to the upregulation of the expression of genes shikimate O-hydroxycinnamoyltransferase (HCT), chalcone synthase (CHS), and phlorizin synthase (PGT1).ConclusionsThis study provides insights into the gene regulatory mechanisms involved in the interaction between GXS16 and sugarcane roots, which will facilitate future applications of endophytic nitrogen-fixing bacteria to promote crop growth.
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