干旱区生态环境知识资源中心(Arid): Sandy soils amended with bentonite induced changes in soil microbiota and fungistasis in maize fields

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DOI	10.1016/j.apsoil.2019.103378
	Sandy soils amended with bentonite induced changes in soil microbiota and fungistasis in maize fields
	Zhang, Huaying 1,2; Chen, Wen 2; Zhao, Baoping 1; Phillips, Lori A.3; Zhou, Yi 1; Lapen, David R.2; Liu, Jinghui 1
通讯作者	Chen, Wen ; Liu, Jinghui
来源期刊	APPLIED SOIL ECOLOGY
ISSN	0929-1393
EISSN	1873-0272
出版年	2020
卷号	146
英文摘要	The addition of bentonite, used as soil conditioner, can promote sandy soil macro-aggregate formation, moisture content retention and increase soil nutrient concentrations. However, there is limited knowledge about how bentonite influences soil microbial communities and interconnections among community members associated with crops, such as maize in continuous production on sandy soils. Metabarcoding analysis of the fungal internal transcribed spacer 1 (ITS1) region and the bacterial 16S rRNA gene V4 region revealed that the fungal communities in sandy maize fields (dominated by Guehomyces, Alternaria and Mortierella) were more diverse and abundant in soils amended with bentonite than those without bentonite amendment. By contrast, the bacterial communities (dominated by Proteobacteria and Actinobacteria) had similar alpha-diversity under both conditions but many functional guilds, including those affiliated with fermentation and N-cycling, differed significantly in community compositional structure between soils with and without bentonite amendment. The increase in soil nutrient concentrations due to the addition of bentonite was a key factor associated with changes in the bacterial communities. However, the fungal communities were more strongly influenced by the capacity of bentonite to increase soil moisture retention and enhance macro-aggregate development. Molecular ecological network analysis revealed more competitive (62.1% of total significant associations) than cooperative (37.9%) associations among microbial community members across all soils studied. The observation that fungal phytopathogens recovered from bentonite-amended soils had more negative correlations (75.6%) with naturally occurring beneficial bacteria and/or fungi than those in non-bentonite soils (65.2%), perhaps suggests, although speculation, that the addition of bentonite promoted soil fungistasis. In summary, our study showed that the addition of bentonite increased maize productivity and reshaped the microbial functional guilds in sandy soils, a consequence of improved soil structure as well as water and nutrient retention; however, the amendment's long-term impact on soil suppressiveness to fungal phytopathogens is worth further investigation.
英文关键词	Aeolian sandy soil Bentonite Metabarcoding Microbiota Soil amendment
类型	Article
语种	英语
国家	Peoples R China ; Canada
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000495709900007
WOS关键词	BACTERIAL COMMUNITY STRUCTURE ; 16S RIBOSOMAL-RNA ; ORGANIC-MATTER ; WATER-RETENTION ; PLANT-GROWTH ; AEOLIAN DESERTIFICATION ; FUNGAL COMMUNITIES ; CLAY-MINERALS ; CARBON ; DIVERSITY
WOS类目	Soil Science
WOS研究方向	Agriculture
EI主题词	2020-02-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312725
作者单位	1.Inner Mongolia Agr Univ, Coll Agron, Hohhot 10010, Peoples R China; 2.Agr & Agri Food Canada, Ottawa Res & Dev Ctr, Sci & Technol Branch, 960 Carling Ave, Ottawa, ON K1A 0C6, Canada; 3.Agr & Agri Food Canada, Harrow Res & Dev Ctr, Sci & Technol Branch, Ottawa, ON N0R 1G0, Canada
推荐引用方式 GB/T 7714	Zhang, Huaying,Chen, Wen,Zhao, Baoping,et al. Sandy soils amended with bentonite induced changes in soil microbiota and fungistasis in maize fields[J],2020,146.
APA	Zhang, Huaying.,Chen, Wen.,Zhao, Baoping.,Phillips, Lori A..,Zhou, Yi.,...&Liu, Jinghui.(2020).Sandy soils amended with bentonite induced changes in soil microbiota and fungistasis in maize fields.APPLIED SOIL ECOLOGY,146.
MLA	Zhang, Huaying,et al."Sandy soils amended with bentonite induced changes in soil microbiota and fungistasis in maize fields".APPLIED SOIL ECOLOGY 146(2020).