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Effects of Dazomet Fumigation on Soil Phosphorus and the Composition of phoD-Harboring Microbial Communities
- Source :
- Journal of Agricultural and Food Chemistry. 68:5049-5058
- Publication Year :
- 2020
- Publisher :
- American Chemical Society (ACS), 2020.
-
Abstract
- The soil phosphorus (P) cycle and P transformation are largely driven by the soil bacterial microbial community. However, little is known about the effects of dazomet (DZ) soil fumigation on soil P and soil microbial communities associated with P transformation. This research investigated P released from three farm soils as a result of DZ fumigation and changes in enzyme activity, gene abundance, and the encoding alkaline phosphatase PhoD microbial community. After DZ fumigation, we observed a briefly significant increase in the available P and the active P fractionation. The soil ALP activity, 16s rRNA abundance, and the phoD gene decreased significantly after DZ fumigation. The abundance and diversity of phoD-harboring microbes also decreased shortly after fumigation, increased significantly 14-28 days later, and then decreased again toward the end of the experimental period of 86 days. The shared OTUs between treatments became fewer with increasing time after fumigation. The changes in available P and the active P fractionation after DZ fumigation were significantly correlated with the abundance of the dominant phoD-harboring microbes. DZ fumigation promoted P mineralization in these farm soils and changed the composition of phoD-harboring microbial communities, which will benefit crops able to absorb and use P.
- Subjects :
- 0106 biological sciences
biology
Chemistry
010401 analytical chemistry
Fumigation
General Chemistry
Mineralization (soil science)
Fractionation
01 natural sciences
Enzyme assay
0104 chemical sciences
chemistry.chemical_compound
Horticulture
Microbial population biology
Dazomet
Soil water
biology.protein
Composition (visual arts)
General Agricultural and Biological Sciences
010606 plant biology & botany
Subjects
Details
- ISSN :
- 15205118 and 00218561
- Volume :
- 68
- Database :
- OpenAIRE
- Journal :
- Journal of Agricultural and Food Chemistry
- Accession number :
- edsair.doi...........9fb5d58b5268fbf5fd2e60dc28846367
- Full Text :
- https://doi.org/10.1021/acs.jafc.9b08033