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High abundance of Ralstonia solanacearum changed tomato rhizosphere microbiome and metabolome
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High abundance of Ralstonia solanacearum changed tomato rhizosphere microbiome and metabolome
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Journal Article
High abundance of Ralstonia solanacearum changed tomato rhizosphere microbiome and metabolome
2020
Overview
Background
Rhizosphere microbiome is dynamic and influenced by environment factors surrounded including pathogen invasion. We studied the effects of
Ralstonia solanacearum
pathogen abundance on rhizosphere microbiome and metabolome by using high throughput sequencing and GC-MS technology.
Results
There is significant difference between two rhizosphere bacterial communities of higher or lower pathogen abundance, and this difference of microbiomes was significant even ignoring the existence of pathogen. Higher pathogen abundance decreased the
alpha
diversity of rhizosphere bacterial community as well as connections in co-occurrence networks. Several bacterial groups such as
Bacillus
and
Chitinophaga
were negatively related to the pathogen abundance. The GC-MS analysis revealed significantly different metabolomes in two groups of rhizosphere soils, i.e., the rhizosphere soil of lower harbored more sugars such as fructose, sucrose and melibiose than that in high pathogen abundance.
Conclusions
The dissimilar metabolomes in two rhizosphere soils likely explained the difference of bacterial communities with Mantel test.
Bacillus
and
Chitinophaga
as well as sugar compounds negatively correlated with high abundance of pathogen indicated their potential biocontrol ability.
Publisher
BioMed Central,BioMed Central Ltd,Springer Nature B.V,BMC
