Reconstruction and analysis of a genome‐scale metabolic model for Agrobacterium tumefaciens. (12th January 2021)

• Record Type: Journal Article
• Authors: Xu, Nan; Yang, Qiyuan; Yang, Xiaojing; Wang, Mingqi; Guo, Minliang
• Is Part Of: Molecular plant pathology. Volume 22:Number 3(2021)
• Page Start: 348
• Page End: 360
• Publication Date: 2021-01-12
• Subjects: Agrobacterium tumefaciens -- crown gall -- genome‐scale metabolic model -- plant pathogen -- systems biology; Plant diseases -- Molecular aspects -- Periodicals; Plant-pathogen relationships -- Molecular aspects -- Periodicals; 571.936
• DOI: 10.1111/mpp.13032
• Languages: English
• ISSNs: 1464-6722

Abstract

Abstract: The plant pathogen Agrobacterium tumefaciens causes crown gall disease and is a widely used tool for generating transgenic plants owing to its virulence. The pathogenic process involves a shift from an independent to a living form within a host plant. However, comprehensive analyses of metabolites, genes, and reactions contributing to this complex process are lacking. To gain new insights about the pathogenicity from the viewpoints of physiology and cellular metabolism, a genome‐scale metabolic model (GSMM) was reconstructed for A. tumefaciens . The model, referred to as i NX1344, contained 1, 344 genes, 1, 441 reactions, and 1, 106 metabolites. It was validated by analyses of in silico cell growth on 39 unique carbon or nitrogen sources and the flux distribution of carbon metabolism. A. tumefaciens metabolic characteristics under three ecological niches were modelled. A high capacity to access and metabolize nutrients is more important for rhizosphere colonization than in the soil, and substantial metabolic changes were detected during the shift from the rhizosphere to tumour environments. Furthermore, by integrating transcriptome data for tumour conditions, significant alterations in central metabolic pathways and secondary metabolite metabolism were identified. Overall, the GSMM and constraint‐based analysis could decode the physiological and metabolic features of A. tumefaciens as well as interspecific interactions with hosts, thereby improving our understanding of host adaptation and infection mechanisms. Abstract : The genome‐scale metabolic model for Agrobacterium tumefaciens exhibited its physiological features, and metabolic response to its living condition change, and decoded its infection process at cellular metabolic level.