Maize-potato residue mixing in agricultural soils enhances residue decomposition and stable carbon content by modifying the potential keystone microbial taxa

doi:10.1016/j.geoderma.2023.116581

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	Maize-potato residue mixing in agricultural soils enhances residue decomposition and stable carbon content by modifying the potential keystone microbial taxa
	Wang,Ding; Zhou,Yanli; Zhao,Ping; Chen,Linkang; Xiang,Rui; Jiang,Yuji; Long,Guangqiang
	2023
发表期刊	GEODERMA
ISSN	1872-6259
卷号	437 页码:116581
摘要	Microbe-regulated organic residue decomposition is a central hub of carbon (C) cycling in ecosystems. However, little is known about the changes in organic C composition and its microbial mechanisms during mixed crop residue decomposition in agroecosystems. We conducted a field litterbag experiment to explore the changes in organic C chemical structure and their associations with microbial communities during mixed (1:1 maize:potato residues based on dry matter mass) and single-species residue decomposition in agricultural soils. Compared with single-species residues, mixed residues exhibited a positive non-additive effect, specifically higher mass loss, and more recalcitrant organic C composition. Structural equation modelling combined with network analysis suggested that residues mixing modified bacterial keystone taxa, augmented the activity of C-degrading enzymes such as & beta;-glucosidase, and increased stable C content during mixed residues decomposition. Thus, this study highlights the potential advantages of applying residue mixtures to agri-cropping soils to increase the relative amount of persistent aromatic compounds derived from their decomposition and the importance of bacterial keystone taxa during residue decomposition.
关键词	Chemical structure Mixed residues Residue decomposition Microbial keystone taxa Non-additive effect COMMUNITY COMPOSITION ORGANIC-MATTER LITTER NITROGEN BACTERIAL QUALITY LEAF
学科领域	Agriculture
DOI	10.1016/j.geoderma.2023.116581
收录类别	SCI
WOS记录号	WOS:001024536900001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/75583
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Wang,Ding,Zhou,Yanli,Zhao,Ping,et al. Maize-potato residue mixing in agricultural soils enhances residue decomposition and stable carbon content by modifying the potential keystone microbial taxa[J]. GEODERMA,2023,437:116581.
APA	Wang,Ding.,Zhou,Yanli.,Zhao,Ping.,Chen,Linkang.,Xiang,Rui.,...&Long,Guangqiang.(2023).Maize-potato residue mixing in agricultural soils enhances residue decomposition and stable carbon content by modifying the potential keystone microbial taxa.GEODERMA,437,116581.
MLA	Wang,Ding,et al."Maize-potato residue mixing in agricultural soils enhances residue decomposition and stable carbon content by modifying the potential keystone microbial taxa".GEODERMA 437(2023):116581.

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