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Rhizosphere microbial community of tomato (Bacteria)

ABSTRACT: Rhizosphere microbial community of tomato (Bacteria) Raw sequence reads

PROVIDER: PRJNA1004066 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR25593771.fastq.gz	Fastqsanger.gz
	SRR25593772.fastq.gz	Fastqsanger.gz
	SRR25593773.fastq.gz	Fastqsanger.gz
	SRR25593774.fastq.gz	Fastqsanger.gz
	SRR25593775.fastq.gz	Fastqsanger.gz

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Project description:Increased root H+ secretion is known as a strategy of plant adaption to low phosphorus (P) stress by enhancing mobilization of sparingly soluble P-sources. However, it remains fragmentarywhether enhanced H+ exudation could reconstruct the plant rhizosphere microbial community under low P stress. The present study found that P deficiency led to enhanced H+ exudation from soybean (Glycine max) roots. Three out of all eleven soybean H+-pyrophosphatases (GmVP) geneswere up-regulated by Pi starvation in soybean roots. Among them, GmVP2 showed the highest expression level under low P conditions. Transient expression of a GmVP2-green fluorescent protein chimera in tobacco (Nicotiana tabacum) leaves, and functional characterization of GmVP2 in transgenic soybean hairy roots demonstrated that GmVP2 encoded a plasma membrane transporter that mediated H+ exudation. Meanwhile, GmVP2-overexpression in Arabidopsis thaliana resulted in enhanced root H+ exudation, promoted plant growth, and improved sparingly soluble Ca-P utilization. Overexpression of GmVP2 also changed the rhizospheric microbial community structures, as reflected by a preferential accumulation of acidobacteria in the rhizosphere soils. These results suggested that GmVP2 mediated Pi-starvation responsive H+ exudation,which is not only involved in plant growth and mobilization of sparingly soluble P-sources, but also affects microbial community structures in soils.

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