TY - JOUR

T1 - Dinotefuran alters Collembola-fungi-bacteria interactions that control mineralization of maize and soil organic carbon

AU - Yu, Zhuyun

AU - Schmidt, Olaf

AU - Zhao, Yan

AU - Liu, Manqiang

AU - Kumar, Amit

AU - Luo, Yu

AU - Xu, Jianming

N1 - We thank Huimin Zhang for her assistance in 16S and ITS data processing. This study was supported by the Natural Science Foundation of Hebei Province (Grant No. D2019111043 ), the Project of Hebei Provincial Key Laboratory of Wetland Ecology and Conservation (Grant No. hklz201904 ) and Hengshui Science and Technology Plan Project (Grant No. 2020014016Z ).

PY - 2021/9/15

Y1 - 2021/9/15

N2 - Rare studies investigated influence of neonicotinoid insecticides on the whole soil biota including non-target invertebrates and microorganisms. And less is known about the consequent intervention on soil C processes. This study aimed to decipher Collembola-fungi-bacteria interactive effects on pathways of maize C translocation, combining isotopic tracer analysis of relevant compartments with high-throughput sequencing for bacterial and fungal genetic profiles. Dinotefuran was applied at 0 or 100 μg kg−1 (a simulating residual dosage) to microcosms containing soils, Collembola and 13C labelled maize. Dinotefuran drastically reduced the density and maize-derived biomass C of Collembola, while intensifying antagonistic associations between soil organisms, with flourishing growth of Ascomycota and Actinobacteria, e.g., Streptomyces. This led to higher soil organic C (SOC) mineralization (elevated by 9.8–10.5%) across soils, attributing to the shift in microbial taxonomic and functional guild, e.g., with the increased abundance of genes aligned to cytochrome P450. Maize decomposition was controlled by Collembola that primarily fed on maize, via grazing behavior that facilitated labile maize C preferred decomposers, e.g., Xanthomonadaceae. These findings elucidate the influence of minute dinotefuran on intra-linkages between biomes (Collembola, fungi and bacteria), and highlight such legacy effects on maize and SOC mineralization.

AB - Rare studies investigated influence of neonicotinoid insecticides on the whole soil biota including non-target invertebrates and microorganisms. And less is known about the consequent intervention on soil C processes. This study aimed to decipher Collembola-fungi-bacteria interactive effects on pathways of maize C translocation, combining isotopic tracer analysis of relevant compartments with high-throughput sequencing for bacterial and fungal genetic profiles. Dinotefuran was applied at 0 or 100 μg kg−1 (a simulating residual dosage) to microcosms containing soils, Collembola and 13C labelled maize. Dinotefuran drastically reduced the density and maize-derived biomass C of Collembola, while intensifying antagonistic associations between soil organisms, with flourishing growth of Ascomycota and Actinobacteria, e.g., Streptomyces. This led to higher soil organic C (SOC) mineralization (elevated by 9.8–10.5%) across soils, attributing to the shift in microbial taxonomic and functional guild, e.g., with the increased abundance of genes aligned to cytochrome P450. Maize decomposition was controlled by Collembola that primarily fed on maize, via grazing behavior that facilitated labile maize C preferred decomposers, e.g., Xanthomonadaceae. These findings elucidate the influence of minute dinotefuran on intra-linkages between biomes (Collembola, fungi and bacteria), and highlight such legacy effects on maize and SOC mineralization.

KW - Actinobacteria

KW - Carbon mineralization

KW - Collembola (Folsomia candida)

KW - Non-target effects

KW - Streptomyces

KW - Chemistry

KW - Ecosystems Research

UR - http://www.scopus.com/inward/record.url?scp=85107962656&partnerID=8YFLogxK

U2 - 10.1016/j.jhazmat.2021.126391

DO - 10.1016/j.jhazmat.2021.126391

M3 - Journal articles

C2 - 34329022

AN - SCOPUS:85107962656

VL - 418

JO - Journal of Hazardous Materials

JF - Journal of Hazardous Materials

SN - 0304-3894

M1 - 126391

ER -