Effects of Dazomet Fumigation on Soil Phosphorus and the Composition of phoD-Harboring Microbial Communities.,Journal of Agricultural and Food Chemistry

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Effects of Dazomet Fumigation on Soil Phosphorus and the Composition of phoD-Harboring Microbial Communities.
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2020-03-24 , DOI: 10.1021/acs.jafc.9b08033
Bin Huang ₁ , Dongdong Yan _{1,

2} , Qiuxia Wang _{1,

2} , Wensheng Fang ₁ , Zhaoxin Song ₁ , Hongyan Cheng ₁ , Yuan Li _{1,

2} , Canbin Ouyang _{1,

2} , Qingli Han ₃ , Xi Jin ₄ , Aocheng Cao _{1,

2}

Affiliation

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.

中文翻译：

Dazomet熏蒸处理对土壤磷和携带phoD的微生物群落组成的影响。

土壤磷（P）循环和磷转化主要由土壤细菌微生物群落驱动。然而，人们对达贡特（DZ）土壤熏蒸对土壤P和与P转化相关的土壤微生物群落的影响知之甚少。这项研究调查了由于DZ熏蒸而从三种农田土壤中释放的磷以及酶活性，基因丰度和编码碱性磷酸酶PhoD微生物群落的变化。DZ熏蒸后，我们观察到有效磷和有效磷分馏的短暂显着增加。DZ熏蒸后，土壤ALP活性，16s rRNA丰度和phoD基因显着降低。熏蒸后不久，携带phoD的微生物的丰度和多样性也降低了，在14-28天后显着增加，然后在实验期86天结束时再次下降。随着熏蒸时间的延长，治疗之间共享的OTU越来越少。DZ熏蒸后有效磷和活性磷组分的变化与主要携带phoD的微生物的丰度显着相关。DZ熏蒸促进了这些农田土壤中P的矿化作用，并改变了携带phoD的微生物群落的组成，这将有利于能够吸收和利用P的农作物。

更新日期：2020-03-05

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