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The microplastisphere: Biodegradable microplastics addition alters soil microbial community structure and function
文献类型：期刊论文
| 作者 | Zhou,Jie; Gui,Heng; Banfield,Callum C.; Wen,Yuan; Zang,Huadong; Dippold,Michaela A.; Charlton,Adam; Jones,Davey L. |
| 刊名 | SOIL BIOLOGY & BIOCHEMISTRY
 |
| 出版日期 | 2021 |
| 卷号 | 156页码:108211 |
| 关键词 | Enzyme activity Microbial growth Microplastic pollution Soil organic matter C turnover Sequencing PLASTIC MULCH CARBON DEGRADATION POLYHYDROXYALKANOATES MECHANISMS INCREASES RESPONSES BACTERIAL POLYMERS PROTEIN |
| ISSN号 | 0038-0717 |
| DOI | 10.1016/j.soilbio.2021.108211 |
| 英文摘要 | Plastics accumulating in the environment, especially microplastics (defined as particles <5 mm), can lead to a range of problems and potential loss of ecosystem services. Polyhydroxyalkanoates (PHAs) are biodegradable plastics used in mulch films, and in packaging material to minimize plastic waste and to reduce soil pollution. Little is known, however, about the effect of microbioplastics on soil-plant interactions, especially soil microbial community structure and functioning in agroecosystems. For the first time, we combined zymography (to localize enzyme activity hotspots) with substrate-induced growth respiration to investigate the effect of PHAs addition on soil microbial community structure, growth, and exoenzyme kinetics in the microplastisphere (i.e. interface between soil and microplastic particles) compared to the rhizosphere and bulk soil. We used a common PHAs biopolymer, poly (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and showed that PHBV was readily used by the microbial community as a source of carbon (C) resulting in an increased specific microbial growth rate and a more active microbial biomass in the microplastisphere in comparison to the bulk soil. Higher ss-glucosidase and leucine aminopeptidase activities (0.6-5.0 times higher Vmax) and lower enzyme affinities (1.5-2.0 times higher Km) were also detected in the microplastisphere relative to the rhizosphere. Furthermore, the PHBV addition changed the soil bacterial community at different taxonomical levels and increased the alpha diversity, as well as the relative abundance of Acidobacteria and Verrucomicrobia phyla, compared to the untreated soils. Overall, PHBV addition created soil hotspots where C and nutrient turnover is greatly enhanced, mainly driven by the accelerated microbial biomass and activity. In conclusion, microbioplastics have the potential to alter soil ecological functioning and biogeochemical cycling (e.g., SOM decomposition). |
| WOS记录号 | WOS:000640189100034 |
| 源URL | [http://ir.kib.ac.cn/handle/151853/73096]  |
| 专题 | 中国科学院昆明植物研究所 |
| 作者单位 | 1.Chinese Acad Sci, Ctr Mt Futures CMF, Kunming Inst Bot, Kunming, Yunnan, Peoples R China 2.Zhou, Jie; Banfield, Callum C.; Dippold, Michaela A.] Univ Goettingen, Dept Crop Sci, Biogeochem Agroecosyst, Gottingen, Germany 3.China Agr Univ, Coll Agron & Biotechnol, Beijing, Peoples R China 4.Chinese Acad Sci, Kunming Inst Bot, CAS Key Lab Plant Divers & Biogeog East Asia, Kunming, Yunnan, Peoples R China 5.Bangor Univ, BioComposites Ctr, Bangor LL57 2UW, Gwynedd, Wales 6.Jones, Davey L.] Bangor Univ, Sch Nat Sci, Bangor LL57 2UW, Gwynedd, Wales 7.Jones, Davey L.] Univ Western Australia, UWA Sch Agr & Environm, Soils West, Perth, WA 6009, Australia |
| 推荐引用方式 GB/T 7714 | Zhou,Jie,Gui,Heng,Banfield,Callum C.,et al. The microplastisphere: Biodegradable microplastics addition alters soil microbial community structure and function[J]. SOIL BIOLOGY & BIOCHEMISTRY,2021,156:108211. |
| APA | Zhou,Jie.,Gui,Heng.,Banfield,Callum C..,Wen,Yuan.,Zang,Huadong.,...&Jones,Davey L..(2021).The microplastisphere: Biodegradable microplastics addition alters soil microbial community structure and function.SOIL BIOLOGY & BIOCHEMISTRY,156,108211. |
| MLA | Zhou,Jie,et al."The microplastisphere: Biodegradable microplastics addition alters soil microbial community structure and function".SOIL BIOLOGY & BIOCHEMISTRY 156(2021):108211. |
入库方式： OAI收割
来源：昆明植物研究所
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