Diversity and co-occurrence network modularization of bacterial communities determine soil fertility and crop yields in arid fertigation agroecosystems

doi:10.1007/s00374-021-01571-3

	Diversity and co-occurrence network modularization of bacterial communities determine soil fertility and crop yields in arid fertigation agroecosystems
	Ye, Zhencheng 2; Li, Jing 1; Wang, Jie 2; Zhang, Chao 2; Liu, Guobin 2,3; Dong, Qin'ge 2
刊名	BIOLOGY AND FERTILITY OF SOILS
	2021-06-17
页码	16
关键词	Irrigation Fertilization Microbial diversity Potential functions Co-occurrence network
ISSN号	0178-2762
DOI	10.1007/s00374-021-01571-3
通讯作者	Zhang, Chao(zhangchaolynn@163.com) ; Liu, Guobin(gbliu@ms.iswc.ac.cn)
英文摘要	Irrigation and fertilization practices can improve crop productivity in agroecosystems; however, the role of soil biodiversity in regulating crop production is not well understood. This restricts our ability to understand how changes in soil biodiversity impact soil function and crop productivity. To address this, a 4-year field experiment was conducted in China using three levels of irrigation [high (400 mm), medium (300 mm), and low (200 mm)] and two levels of fertilization [high (600 kg/ha P2O5 + 300 kg/ha urea) and low (300 kg/ha P2O5 + 150 kg/ha urea)] in arid farmland, to investigate maize production, soil properties, bacterial and fungal communities (diversity, compositions, N-cycling potentials, and co-occurrence networks), and their associations. The results showed that irrigation and fertilization had significant effects on bacterial and fungal community diversity, N-cycling potentials, and co-occurrence network patterns during maize growth. The combined treatment of medium irrigation and low fertilization resulted in higher maize yields, bacterial diversity, nitrification, ammoxidation, N-fixation potentials, and network modularity, compared with the other treatments. Strong and positive associations were observed between the soil N-cycling potentials, maize yields, and bacterial diversity; soils supporting a large number of bacterial taxa with co-occurrence network modularity had high soil nutrient levels (organic C and inorganic N) and maize yields. Structural equation modeling demonstrated that bacteria exhibited higher contribution to soil fertility and maize yields than fungi, and irrigation and fertilization indirectly affected microbial functions by altering bacterial diversity and network modularization, which also affected soil fertility and maize yields. These results highlight the importance of microbial diversity and their co-occurrence networks for maintaining soil fertility and crop production and will improve future irrigation and fertilization practices in arid agroecosystems and provide guidance for sustainable crop production.
资助项目	Light of the West Cross Team Key Laboratory Cooperative Research Project of Chinese Academy of Science ; Natural Science Basic Research Program of Shaanxi Province[2019KJXX-081] ; Natural Science Basic Research Program of Shaanxi Province[2021JM-605] ; National Natural Sciences Foundation of China[41771554] ; National Natural Sciences Foundation of China[51609237] ; National Natural Sciences Foundation of China[41807521] ; National Key Research and Development Program of China[2016YFC0501707]
WOS关键词	MICROBIAL COMMUNITY ; RHIZOSPHERE SOIL ; NITROGEN ; DECOMPOSITION ; TEMPERATURE ; COMPETITION ; RESPONSES ; PATTERNS ; PLATEAU ; REVEALS
WOS研究方向	Agriculture
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000662814000002
资助机构	Light of the West Cross Team Key Laboratory Cooperative Research Project of Chinese Academy of Science ; Natural Science Basic Research Program of Shaanxi Province ; National Natural Sciences Foundation of China ; National Key Research and Development Program of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/164122]
专题	中国科学院地理科学与资源研究所
通讯作者	Zhang, Chao; Liu, Guobin
作者单位	1.Northwest A&F Univ, Coll Forestry, Yangling 712100, Shaanxi, Peoples R China 2.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Ye, Zhencheng,Li, Jing,Wang, Jie,et al. Diversity and co-occurrence network modularization of bacterial communities determine soil fertility and crop yields in arid fertigation agroecosystems[J]. BIOLOGY AND FERTILITY OF SOILS,2021:16.
APA	Ye, Zhencheng,Li, Jing,Wang, Jie,Zhang, Chao,Liu, Guobin,&Dong, Qin'ge.(2021).Diversity and co-occurrence network modularization of bacterial communities determine soil fertility and crop yields in arid fertigation agroecosystems.BIOLOGY AND FERTILITY OF SOILS,16.
MLA	Ye, Zhencheng,et al."Diversity and co-occurrence network modularization of bacterial communities determine soil fertility and crop yields in arid fertigation agroecosystems".BIOLOGY AND FERTILITY OF SOILS (2021):16.