CaltechAUTHORS
  A Caltech Library Service

Increasing temperature can modify the effect of straw mulching on soil C fractions, soil respiration, and microbial community composition

Fu, Xin and Wang, Jun and Xie, Mengyi and Zhao, Fazhu and Doughty, Russell (2020) Increasing temperature can modify the effect of straw mulching on soil C fractions, soil respiration, and microbial community composition. PLoS ONE, 15 (8). Art. No. e0237245. ISSN 1932-6203. https://resolver.caltech.edu/CaltechAUTHORS:20200812-103151405

[img]
Preview
PDF - Published Version
Creative Commons Attribution.

2266Kb
[img] PDF (S1 Fig.) - Supplemental Material
Creative Commons Attribution.

89Kb
[img] PDF (S1 Table) - Supplemental Material
Creative Commons Attribution.

61Kb
[img] PDF (S2 Table) - Supplemental Material
Creative Commons Attribution.

86Kb
[img] PDF (S3 Table) - Supplemental Material
Creative Commons Attribution.

104Kb
[img] PDF (S4 Table) - Supplemental Material
Creative Commons Attribution.

83Kb
[img] PDF (S5 Table) - Supplemental Material
Creative Commons Attribution.

93Kb
[img] PDF (S6 Table) - Supplemental Material
Creative Commons Attribution.

60Kb
[img] PDF (S7 Table) - Supplemental Material
Creative Commons Attribution.

92Kb
[img] PDF (S8 Table) - Supplemental Material
Creative Commons Attribution.

102Kb

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20200812-103151405

Abstract

Straw mulching has been widely adopted in dryland cropping but its effect on soil respiration and microbial communities under warming are not well understood. Soil samples were collected from a corn field with straw mulching (SM) for nine years and without straw mulching (CK), and incubated at 15°C, 25°C, and 35°C for 60 days. Soil respiration, C fractions and bacterial and fungal community structure were measured SM had greater soil organic carbon and potential C mineralization and a similar microbial biomass carbon throughout the incubation when compared with CK. Soil respiration increased with increasing temperature and its temperature sensitivity (Q₁₀) was lower with SM than CK. Similar microbial community composition was found in the soils with SM and CK before incubation. However, SM had a greater bacterial richness and the relative abundances of Proteobacteria, Acidobacteria, Nitrospirae, Planctomycetes, Bacteroidetes, and Basidiomycota, but lower relative abundances of Actinobacteria, Chloroflexi, and Ascomycota than CK after incubation. Bacterial richness and diversity were greater at 15°C and 25°C than 35°C, but there was no difference in fungal richness and diversity among the incubation temperatures. As temperature increased, the relative abundances of Chloroflexi, Acidobacteria, and Bacteroidetes decreased, but Gemmatimonadetes and Ascomycota increased, and were significantly correlated with soil C fractions and respiration. These findings indicated that the effect of straw mulching on soil C cycling and microbial community structure can be highly modified by increasing temperature.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1371/journal.pone.0237245DOIArticle
https://doi.org/10.1371/journal.pone.0237245.s001DOIS1 Fig.
https://doi.org/10.1371/journal.pone.0237245.s002DOIS1 Table
https://doi.org/10.1371/journal.pone.0237245.s003DOIS2 Table
https://doi.org/10.1371/journal.pone.0237245.s004DOIS3 Table
https://doi.org/10.1371/journal.pone.0237245.s005DOIS4 Table
https://doi.org/10.1371/journal.pone.0237245.s006DOIS5 Table
https://doi.org/10.1371/journal.pone.0237245.s007DOIS6 Table
https://doi.org/10.1371/journal.pone.0237245.s008DOIS7 Table
https://doi.org/10.1371/journal.pone.0237245.s009DOIS8 Table
ORCID:
AuthorORCID
Wang, Jun0000-0002-8011-3149
Doughty, Russell0000-0001-5191-2155
Additional Information:© 2020 Fu et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Received: February 15, 2020; Accepted: July 22, 2020; Published: August 11, 2020. Peer Review History: PLOS recognizes the benefits of transparency in the peer review process; therefore, we enable the publication of all of the content of peer review and author responses alongside final, published articles. The editorial history of this article is available here: https://doi.org/10.1371/journal.pone.0237245. Data Availability Statement: The raw sequences for all samples were sent to the Sequence Read Archive (SRA) database of the National Center for Biotechnology Information (NCBI) with the accession numbers SRP260944 for bacteria and SRP261054 for fungi. All other relevant data are within the manuscript and its Supporting Information files. The study was supported by the Chinese Academy of Sciences 505 “Light of West China” Program for Introduced Talent in the West, the National Natural Science Foundation of China (Grant No. 507 31570440, 31270484), and the Key International Scientific and Technological Cooperation and Exchange Project of Shaanxi Province, China (grant number 2020KWZ-010). Author Contributions: Data curation: Xin Fu, Mengyi Xie. Formal analysis: Fazhu Zhao. Funding acquisition: Jun Wang. Methodology: Jun Wang, Fazhu Zhao. Resources: Jun Wang. Writing – original draft: Xin Fu. Writing – review & editing: Jun Wang, Russell Doughty. The authors have declared that no competing interests exist.
Funders:
Funding AgencyGrant Number
Chinese Academy of SciencesUNSPECIFIED
National Natural Science Foundation of China31570440
National Natural Science Foundation of China31270484
Key International Scientific and Technological Cooperation and Exchange Project of Shaanxi Province2020KWZ-010
Issue or Number:8
Record Number:CaltechAUTHORS:20200812-103151405
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20200812-103151405
Official Citation:Fu X, Wang J, Xie M, Zhao F, Doughty R (2020) Increasing temperature can modify the effect of straw mulching on soil C fractions, soil respiration, and microbial community composition. PLoS ONE 15(8): e0237245. https://doi.org/10.1371/journal.pone.0237245
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:104928
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:12 Aug 2020 17:55
Last Modified:12 Aug 2020 17:55

Repository Staff Only: item control page