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Shifts in bacterial and fungal diversity in a paddy soil faced with phosphorus surplus
- Source :
- Biology and Fertility of Soils. 54:259-267
- Publication Year :
- 2017
- Publisher :
- Springer Science and Business Media LLC, 2017.
-
Abstract
- Abundant phosphorus (P) has been applied to paddy fields in the red soil region of subtropical China. Microbial communities play important roles in soil nutrient cycling; however, the effects of P surplus on soil microbial diversity and community composition are still unclear. Soils collected from paddy fields in subtropical China was incubated and subjected to four P treatments: 33 kg ha−1 (CK), 66 kg ha−1 (P1), 132 kg ha−1 (P2), and 264 kg ha−1 (P3). Changes in bacterial and fungal diversity and community composition were evaluated by high-throughput sequencing. The different P rates had no significant effect on bacterial diversity, whereas fungal richness and diversity indexes declined significantly by increasing P rates. Principle coordinate analysis (PCoA) also indicated a shift in fungal community composition when P rates were higher than 132 kg ha−1. Available P (AP) was the dominant factor affecting fungal community composition as evaluated by canonical correspondence analysis (CCA). Multivariate regression trees (MRT) revealed that the key threshold of 53.6 mg kg−1 of AP divided treatments into two distinct groups. Linear discriminant analysis effect size (LEfSe) showed that abundances of Pseudogymnoascus and Geomyces increased, but those of Penicillium and an unknown genus of Trichocomaceae decreased when AP was ≥ 53.6 mg kg−1.
- Subjects :
- 0301 basic medicine
Trichocomaceae
biology
Phosphorus
Soil Science
chemistry.chemical_element
04 agricultural and veterinary sciences
biology.organism_classification
Microbiology
03 medical and health sciences
030104 developmental biology
Geomyces
Agronomy
chemistry
Canonical correspondence analysis
Indicator species
Soil water
040103 agronomy & agriculture
0401 agriculture, forestry, and fisheries
Species richness
Red soil
Agronomy and Crop Science
Subjects
Details
- ISSN :
- 14320789 and 01782762
- Volume :
- 54
- Database :
- OpenAIRE
- Journal :
- Biology and Fertility of Soils
- Accession number :
- edsair.doi...........5d089c80f825a66a2b4ae51159af3f61