干旱区生态环境知识资源中心(Arid): Soil bacterial community structure and functioning in a long-term conservation agriculture experiment under semi-arid rainfed production system

Arid

DOI	10.3389/fmicb.2023.1102682
	Soil bacterial community structure and functioning in a long-term conservation agriculture experiment under semi-arid rainfed production system
	Pratibha, G.; Manjunath, M.; Raju, B. M. K.; Srinivas, I.; Rao, K. V.; Shanker, Arun K. K.; Prasad, J. V. N. S.; Rao, M. Srinivasa; Kundu, Sumanta; Indoria, A. K.; Kumar, Upendra; Rao, K. Srinivasa; Anna, Shivakumar; Rao, Ch. Srinivasa; Singh, V. K.; Biswas, A. K.; Chaudhari, S. K.
通讯作者	Pratibha, G ; Manjunath, M
来源期刊	FRONTIERS IN MICROBIOLOGY
EISSN	1664-302X
出版年	2023
卷号	14
英文摘要	Soil microbial communities are important drivers of biogeochemical cycling of nutrients, organic matter decomposition, soil organic carbon, and Greenhouse gas emissions (GHGs: CO2, N2O, and CH4) and are influenced by crop and soil management practices. The knowledge on the impact of conservation agriculture (CA) on soil bacterial diversity, nutrient availability, and GHG emissions in semi-arid regions under rainfed conditions is vital to develop sustainable agricultural practices, but such information has not been systemically documented. Hence, studies were conducted for 10 years in rainfed pigeonpea (Cajanus cajan L.)-castor bean (Ricinus communis L.) cropping system under semi-arid conditions to assess the effects of tillage and crop residue levels on the soil bacterial diversity, enzyme activity (Dehydrogenase, urease, acid phosphatase, and alkaline phosphatase), GHG emissions, and soil available nutrients (Nitrogen, phosphorus, and potassium). Sequencing of soil DNA through Illumina HiSeq-based 16S rRNA amplicon sequencing technology has revealed that bacterial community responded to both tillage and residue levels. The relative abundance of Actinobacteria in terms of Operational Taxonomic Unit (OTUs) at phyla, class as well as genera level was higher in CA (NTR1: No Tillage + 10 cm anchored residue and NTR2 NT + 30 cm anchored residue) over CT (conventional tillage without crop residues). CA resulted in higher enzyme activities (dehydrogenase, urease, acid phosphatase, and alkaline phosphatase) and reduction in GHG emissions over CT. CA recorded 34% higher and 3% lower OC, as compared to CT, and CTR1, respectively. CA recorded 10, 34, and 26% higher available nitrogen, phosphorus, and potassium over CT and CTR1, respectively. NTR1 recorded 25 and 38% lower N2O emissions as compared to CTR1 and CTR2, respectively. Whereas only NT recorded 12% higher N2O emissions as compared to CT. Overall, the results of the study indicate that CA improves the relative abundance of soil bacterial communities, nutrient availability, and enzyme activities, and may help to contribute to the mitigation of climate change, and sustainability in rainfed areas.
英文关键词	tillage residues soil microbial community enzyme activities soil organic carbon nutrient availability
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:001015876600001
WOS关键词	ORGANIC-MATTER ; CARBON SEQUESTRATION ; MICROBIAL COMMUNITY ; CONVENTIONAL TILLAGE ; ENZYME-ACTIVITIES ; REDUCED TILLAGE ; USE EFFICIENCY ; N2O EMISSIONS ; NO-TILLAGE ; MANAGEMENT
WOS类目	Microbiology
WOS研究方向	Microbiology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396561
推荐引用方式 GB/T 7714	Pratibha, G.,Manjunath, M.,Raju, B. M. K.,et al. Soil bacterial community structure and functioning in a long-term conservation agriculture experiment under semi-arid rainfed production system[J],2023,14.
APA	Pratibha, G..,Manjunath, M..,Raju, B. M. K..,Srinivas, I..,Rao, K. V..,...&Chaudhari, S. K..(2023).Soil bacterial community structure and functioning in a long-term conservation agriculture experiment under semi-arid rainfed production system.FRONTIERS IN MICROBIOLOGY,14.
MLA	Pratibha, G.,et al."Soil bacterial community structure and functioning in a long-term conservation agriculture experiment under semi-arid rainfed production system".FRONTIERS IN MICROBIOLOGY 14(2023).