Abstract Polygonum hydropiper is a phosphorus (P)-accumulating herb used for P-phytoextraction, with higher P-accumulating capability in the mining ecotype (ME) than the non-mining ecotype (NME). This difference might result from the variation in root-associated soil (rhizoplane, rhizosphere) bacterial characteristics. Thus, characteristics and influence factors of bacterial community were investigated in root-associated soils and bulk soils of both ecotypes of P. hydropiper in situ using high-throughput sequencing technique. Bacterial community diversity and richness were independent with ecotypes; rather it positively correlated with soil organic matter concentration. Forty-nine phyla were identified, with Proteobacteria being the most dominated phylum. Soil bacterial community compositions were primarily separated into clusters by ecotypes, simultaneously with great influence by soil groups and chemical properties. Rhizoplane and rhizosphere bacterial communities showed more similarity compared with those in bulk soil. Soil pH, available P, available nitrogen and available potassium played major roles in shaping the bacterial community compositions. The genera Halomonas, Flavisolibacter, Blastocatella, Thiobacillus, Sphingomonas and Bacillus in ME root-associated soils showed higher abundance than in NME root-associated soils, positively with soil available P concentration, suggesting these genera might be important in mobilizing soil mineral-P and facilitating P uptake for the ME of P. hydropiper.
Characteristics of bacterial community in root-associated soils of the mining ecotype of Polygonum hydropiper, a P-accumulating herb
Daihua Ye,Ting-xuan Li,Haiying Yu,L. Zou,Huagang Huang,Xi-zhou Zhang,Jiangbo Liu
Published 2020 in Agriculture, Ecosystems & Environment. Applied Soil Ecology
ABSTRACT
PUBLICATION RECORD
- Publication year
2020
- Venue
Agriculture, Ecosystems & Environment. Applied Soil Ecology
- Publication date
2020-06-01
- Fields of study
Biology, Environmental Science
- Identifiers
- External record
- Source metadata
Semantic Scholar
CITATION MAP
EXTRACTION MAP
CLAIMS
CONCEPTS
- available p
The plant-available phosphorus fraction measured in the sampled soils.
Aliases: soil available P
- bacterial community composition
The taxonomic makeup of the bacterial communities in the sampled soils.
Aliases: community compositions
- bacterial community diversity and richness
Measures of bacterial taxon variety and abundance balance in the soil samples.
Aliases: diversity and richness
- bulk soil
Soil sampled away from the root zone for comparison with the root-associated soils.
Aliases: bulk soils
- ecotypes
The mining and non-mining Polygonum hydropiper groups compared in the study.
Aliases: mining ecotype (ME), non-mining ecotype (NME), ME, NME
- p-associated genera
A group of six bacterial genera named in the abstract: Halomonas, Flavisolibacter, Blastocatella, Thiobacillus, Sphingomonas, and Bacillus.
Aliases: Halomonas, Flavisolibacter, Blastocatella, Thiobacillus, Sphingomonas, Bacillus
- root-associated soils
The soil zones directly associated with roots, including the rhizoplane and rhizosphere sampled here.
Aliases: rhizoplane, rhizosphere
- soil chemical properties
Soil measurements such as pH and nutrient availability used to characterize the sampled soils.
Aliases: soil pH, available nitrogen, available potassium
- soil organic matter concentration
The measured amount of organic matter in the sampled soils.
Aliases: soil organic matter
REFERENCES
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