eprintid: 11516
rev_number: 10
eprint_status: archive
userid: 3170
dir: disk0/00/01/15/16
datestamp: 2020-06-12 10:36:12
lastmod: 2020-06-12 10:36:12
status_changed: 2020-06-12 10:36:12
type: article
metadata_visibility: show
creators_name: Liu, C
creators_name: Li, L
creators_name: Xie, J
creators_name: Coulter, J A
creators_name: Zhang, R
creators_name: Luo, Z
creators_name: Cai, L
creators_name: Wang, L
creators_name: Gopalakrishnan, S
icrisatcreators_name: Gopalakrishnan, S
affiliation: Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou
affiliation: College of Agronomy, Gansu Agricultural University, Lanzhou
affiliation: Department of Agronomy and Plant Genetics, University of Minnesota, St. Paul
affiliation: College of Resource and Environment, Gansu Agricultural University, Lanzhou
affiliation: ICRISAT (Patancheru)
country: China
country: USA
country: India
title: Soil Bacterial Diversity and Potential Functions Are Regulated by Long-Term Conservation Tillage and Straw Mulching
ispublished: pub
subjects: s2.11
subjects: wa1
divisions: CRPS2
full_text_status: public
keywords: Conservation tillage, Field pea, Soil microbial community, High‐throughput sequencing, PICRUSt
note: We appreciate the excellent technical assistance for field sampling and laboratory tests
provided by undergrade and graduate students at the Gansu Agricultural University Rainfed Agricultural
Experimental Station.
abstract: Soil physiochemical properties are regulated by cropping practices, but little is known
about how tillage influences soil microbial community diversity and functions. Here, we assessed
soil bacterial community assembly and functional profiles in relation to tillage. Soils, collected in
2018 from a 17‐year field experiment in northwestern China, were analyzed using high‐throughput
sequencing and the PICRUSt approach. The taxonomic diversity of bacterial communities was
dominated primarily by the phyla Proteobacteria (32–56%), Bacteroidetes (12–33%), and Actinobacteria
(17–27%). Alpha diversity (Chao1, Shannon, Simpson, and operational taxonomic unit (OTU)
richness) was highest under no‐tillage with crop residue removed (NT). Crop residue retention on
the soil surface (NTS) or incorporated into soil (TS) promoted the abundance of Proteobacteria by 16
to 74% as compared to conventional tillage (T). Tillage practices mainly affected the pathways of
soil metabolism, genetic information processing, and environmental information processing. Soil
organic C and NH4–N were the principal contributors to the diversity and composition of soil
microbiota, whereas soil pH, total nitrogen, total P, and moisture had little effect. Our results
suggest that long‐term conservation practices with no‐tillage and crop residue retention shape soil
bacterial community composition through modifying soil physicochemical properties and
promoting the metabolic function of soil microbiomes.
date: 2020-06
date_type: published
publication: Microorganisms (TSI)
volume: 8
number: 836
publisher: MDPI
pagerange: 1-16
id_number: doi:10.3390/microorganisms8060836
refereed: TRUE
issn: 2076-2607
official_url: https://doi.org/10.3390/microorganisms8060836
related_url_url: https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=10.3390%2Fmicroorganisms8060836&btnG=
related_url_type: pub
funders: Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Agricultural University
funders: The National Natural Science Foundation of China
funders: Fostering Foundation for Excellent Ph.D. Dissertations of Gansu Agricultural University
citation:   Liu, C and Li, L and Xie, J and Coulter, J A and Zhang, R and Luo, Z and Cai, L and Wang, L and Gopalakrishnan, S  (2020) Soil Bacterial Diversity and Potential Functions Are Regulated by Long-Term Conservation Tillage and Straw Mulching.  Microorganisms (TSI), 8 (836).  pp. 1-16.  ISSN 2076-2607     
document_url: http://oar.icrisat.org/11516/1/Liu%20et%20al.%2C%202020%20published%202%20June%202020.pdf