Silica fertilization and nano-MnO₂ amendment on bacterial community composition in high arsenic paddy soils

TY - JOUR

T1 - Silica fertilization and nano-MnO2 amendment on bacterial community composition in high arsenic paddy soils

AU - Shao, Jihai

AU - He, Yaxian

AU - Zhang, Huiling

AU - Chen, Anwei

AU - Lei, Ming

AU - Chen, Junfeng

AU - Peng, Liang

AU - Gu, Ji Dong

N1 - Publisher Copyright: © 2015, Springer-Verlag Berlin Heidelberg.

PY - 2016/3/1

Y1 - 2016/3/1

N2 - Silica fertilization and nano-MnO2 amendment are reported as useful approaches in lowering the accumulation of arsenic in rice grains, but the effects of silica fertilization or nano-MnO2 amendment on microbial community in the paddy soils containing high concentration of arsenic are still unknown. In order to elucidate this question, the structures and composition of microbial community in the paddy soils, in response to silica fertilization and nano-MnO2 amendment, were investigated using pyrosequencing technique. The results indicated that Proteobacteria, Chloroflexi, and Acidobacteria were the main dominating phyla in these paddy soils. A decrease in the relative abundance of Chloroflexi and Cyanobacteria, but an increase in the relative abundance of Acidobacteria was observed after silica fertilization and nano-MnO2 amendment. The changes of Acidobacteria, Chloroflexi, and Cyanobacteria were strongly correlated with pH and the concentration of bioavailable arsenic in the paddy soils. The α-diversity of bacteria in the paddy soils increased in response to silica fertilization at low amendment level, but decreased under silica or nano-MnO2 amendment at high amendment level. Results of β-diversity analysis indicated that the microbial communities in the control treatment shared more similarity with that of those received low level of nano-MnO2 amendment, and the two silica fertilization treatments also shared more similarity with each other.

AB - Silica fertilization and nano-MnO2 amendment are reported as useful approaches in lowering the accumulation of arsenic in rice grains, but the effects of silica fertilization or nano-MnO2 amendment on microbial community in the paddy soils containing high concentration of arsenic are still unknown. In order to elucidate this question, the structures and composition of microbial community in the paddy soils, in response to silica fertilization and nano-MnO2 amendment, were investigated using pyrosequencing technique. The results indicated that Proteobacteria, Chloroflexi, and Acidobacteria were the main dominating phyla in these paddy soils. A decrease in the relative abundance of Chloroflexi and Cyanobacteria, but an increase in the relative abundance of Acidobacteria was observed after silica fertilization and nano-MnO2 amendment. The changes of Acidobacteria, Chloroflexi, and Cyanobacteria were strongly correlated with pH and the concentration of bioavailable arsenic in the paddy soils. The α-diversity of bacteria in the paddy soils increased in response to silica fertilization at low amendment level, but decreased under silica or nano-MnO2 amendment at high amendment level. Results of β-diversity analysis indicated that the microbial communities in the control treatment shared more similarity with that of those received low level of nano-MnO2 amendment, and the two silica fertilization treatments also shared more similarity with each other.

KW - Arsenic

KW - Bacterial community

KW - Nano-MnO

KW - Paddy soil

KW - Pyrosequencing

KW - Silica

UR - http://www.scopus.com/inward/record.url?scp=84958906923&partnerID=8YFLogxK

U2 - 10.1007/s00253-015-7131-y

DO - 10.1007/s00253-015-7131-y

M3 - 文章

C2 - 26563550

AN - SCOPUS:84958906923

SN - 0175-7598

VL - 100

SP - 2429

EP - 2437

JO - Applied Microbiology and Biotechnology

JF - Applied Microbiology and Biotechnology

IS - 5

ER -