Dryland Cropping Systems, Weed Communities, and Disease Status Modulate the Effect of Climate Conditions on Wheat Soil Bacterial Communities.
16S rRNA gene
Illumina MiSeq
climate change
conventional
grazing
organic
tillage
wheat streak mosaic virus
Journal
mSphere
ISSN: 2379-5042
Titre abrégé: mSphere
Pays: United States
ID NLM: 101674533
Informations de publication
Date de publication:
15 07 2020
15 07 2020
Historique:
entrez:
17
7
2020
pubmed:
17
7
2020
medline:
16
7
2021
Statut:
epublish
Résumé
Little knowledge exists on how soil bacteria in agricultural settings are impacted by management practices and environmental conditions in current and predicted climate scenarios. We assessed the impact of soil moisture, soil temperature, weed communities, and disease status on soil bacterial communities in three cropping systems: (i) conventional no-till (CNT) systems utilizing synthetic pesticides and herbicides, (ii) USDA-certified tilled organic (OT) systems, and (iii) USDA-certified organic systems with sheep grazing (OG). Sampling date within the growing season and associated soil temperature and moisture exerted the greatest effect on bacterial communities, followed by cropping system, Wheat streak mosaic virus (WSMV) infection status, and weed community. Soil temperature was negatively correlated with bacterial richness and evenness, while soil moisture was positively correlated with bacterial richness and evenness. Soil temperature and soil moisture independently altered soil bacterial community similarity between treatments. Inoculation of wheat with WSMV altered the associated soil bacteria, and there were interactions between disease status and cropping system, sampling date, and climate conditions, indicating the effect of multiple stressors on bacterial communities in soil. In May and July, cropping system altered the effect of climate change on the bacterial community composition in hotter conditions and in hotter and drier conditions compared to ambient conditions, in samples not treated with WSMV. Overall, this study indicates that predicted climate modifications as well as biological stressors play a fundamental role in the impact of cropping systems on soil bacterial communities.
Identifiants
pubmed: 32669466
pii: 5/4/e00340-20
doi: 10.1128/mSphere.00340-20
pmc: PMC7364210
pii:
doi:
Substances chimiques
Soil
0
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, U.S. Gov't, Non-P.H.S.
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : NIGMS NIH HHS
ID : P20 GM103474
Pays : United States
Informations de copyright
Copyright © 2020 Ishaq et al.
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