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Water-soluble phosphorus contributes significantly to shaping the community structure of rhizospheric bacteria in rocky desertification areas

Microorganisms play important roles in soil improvement. Therefore, clarifying the contribution of environmental factors in shaping the microbial community structure is beneficial to improve soil fertility in karst rocky desertification areas. Here, the bacterial community structures of eight rhizos...

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Published in:Scientific reports 2019-12, Vol.9 (1), p.18408-11, Article 18408
Main Authors: Xie, Jinge, Xue, Wenzhi, Li, Cong, Yan, Zongqiang, Li, Dong, Li, Guoqiang, Chen, Xiwen, Chen, Defu
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description Microorganisms play important roles in soil improvement. Therefore, clarifying the contribution of environmental factors in shaping the microbial community structure is beneficial to improve soil fertility in karst rocky desertification areas. Here, the bacterial community structures of eight rhizospheric soil samples collected from perennial fruit plantations were analysed using an Illumina HiSeq2500 platform. The diversity and abundance of bacteria in rocky desertification areas were significantly lower than those in non-rocky desertification areas, while the bacterial community structure was not significantly different between root surface and non-root surface soils in the same rhizospheric soil samples. Proteobacteria predominated in rocky desertification areas, while Actinobacteria predominated in non-rocky desertification areas. Correlation analysis revealed that water-soluble phosphorus content (r 2  = 0.8258), latitude (r 2  = 0.7556), altitude (r 2  = 0.7501), and the age of fruit trees (r 2  = 0.7321) were positively correlated with the bacterial community structure, while longitude, pH, and total phosphorus content did not significantly influence the soil bacterial community structure. As water-soluble phosphorus content is derived from insoluble phosphorus minerals, supplementing phosphorus-solubilising bacteria to soils in rocky desertification areas is a feasible strategy for accelerating the dissolution of insoluble phosphorus minerals and improving agricultural production and environment ecology.
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subjects 631/158
631/326
631/337
704/158
704/172
704/2151
Acidobacteria - classification
Acidobacteria - genetics
Acidobacteria - isolation & purification
Actinobacteria - classification
Actinobacteria - genetics
Actinobacteria - isolation & purification
Agricultural production
Agriculture - methods
Bacteria
Bacteroidetes - classification
Bacteroidetes - genetics
Bacteroidetes - isolation & purification
China
Chloroflexi - classification
Chloroflexi - genetics
Chloroflexi - isolation & purification
Community structure
Conservation of Natural Resources - legislation & jurisprudence
Correlation analysis
Desertification
DNA, Bacterial - genetics
Environmental factors
Firmicutes - classification
Firmicutes - genetics
Firmicutes - isolation & purification
Fruit trees
Fruits
Humanities and Social Sciences
Humans
Hydrogen-Ion Concentration
Karst
Microbiota - genetics
Microorganisms
Minerals
multidisciplinary
Phosphorus
Phosphorus - chemistry
Phosphorus - metabolism
Phosphorus content
Proteobacteria - classification
Proteobacteria - genetics
Proteobacteria - isolation & purification
Rhizosphere
Rhizosphere microorganisms
Science
Science (multidisciplinary)
Soil - chemistry
Soil fertility
Soil Microbiology
Soil microorganisms
Soil surfaces
Soils
Trees - microbiology
Trees - physiology
Water - metabolism
title Water-soluble phosphorus contributes significantly to shaping the community structure of rhizospheric bacteria in rocky desertification areas
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