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Chromobacterium amazonense strain:CV8

ABSTRACT: Chromobacterium amazonense strain:CV8 Genome sequencing

PROVIDER: PRJNA937067 | ENA |

REPOSITORIES: ENA

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Transcriptome and proteome profiles of the diazotroph Nitrospirillum amazonense strain CBAmC in response to the sugarcane apoplast fluid

Project description:Background and aims The endophytic diazotrophic strain CBAmC of Nitrospirillum amazonense has been reported as a plant growth promoter of sugarcane variety RB867515 when grown under field conditions. The present work aimed to assess the influence of apoplast fluid from RB867515 on the transcriptomic and proteomic profiles of CBAmC cultured in vitro. Methods RNA-Seq in Ion Proton™ and ESI-LC-MS/MS peptide analysis were used to evaluate the transcriptomic and proteomic profiles, respectively, of CBAmC exposed for 2 h to the sugarcane apoplast fluid. Results The bacterial transcriptomic and proteomic profiles were well correlated. The overall response of CBAmC to the apoplast fluid included overexpression of defense systems against reactive oxygen species (ROS) and osmotic stress, RND efflux pumps for toxic compounds, Sec and Tat secretory systems, and assimilative metabolism of iron. In contrast, active transporters of organic compounds, chemotaxis system and flagellum structure were underexpressed. Conclusions The bacterial metabolic pathways / functions activated in response to the sugarcane apoplast fluid are most likely related to its adaptation to the peculiar characteristics of the fluid. The activation of some of those functions could be determinant for its adaptation to the sugarcane apoplastic niche, and perhaps be involved in the previously observed effect of promoting plant growth. SUBMITTER_CITATION: Terra, L.A., de Soares, C.P., Meneses, C.H.S.G. et al. Plant Soil (2019). Transcriptome and proteome profiles of the diazotroph Nitrospirillum amazonense strain CBAmC in response to the sugarcane apoplast fluid.

2019-04-26 | GSE130321 | GEO

Transcriptome and proteome profiles of the diazotroph Nitrospirillum amazonense strain CBAmC in response to the sugarcane apoplast fluid

Project description:The diazotrophic CBAmC strain of Nitrospirillum amazonense has been reported to promote growth of sugarcane variety RB867515 when inoculated under field conditions in a consortium with four other nitrogen-fixing bacteria. The present work had the objective of accessing the influence of the sugarcane apoplast fluid from variety RB867515 on the global transcriptomic and proteomic profiles of CBAmC strain cultured in vitro. The comparative analysis between the transcriptome and proteome profiles showed strong consistency between the results of the two approaches. Data analysis revealed that expression levels of transcripts and proteins related to cell motility and signal transduction, among other functions, were strongly downregulated in the presence of the apoplast fluid. In contrast, transcripts and proteins were upregulated for functional categories including chaperones, iron homeostasis and multidrug efflux transporters. In conclusion, the results showed that the metabolic state of N. amazonense during cultivation in the presence of the apoplast fluid is directed to functions capable of supporting adaptation to the complex environment of the sugarcane apoplast.

2019-07-12 | PXD013518 | Pride

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