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Effects of continuous cropping of sweet potatoes on the bacterial community structure in rhizospheric soil
BACKGROUND: Continuous cropping obstacles from sweet potatoes are widespread, which seriously reduce the yield and quality, causing certain economic losses. Bacteria of rhizospheric soil are the richest and are associated with obstacles to continuous cropping. However, few studies have examined how...
Autores principales: | , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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BioMed Central
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8015022/ https://www.ncbi.nlm.nih.gov/pubmed/33794774 http://dx.doi.org/10.1186/s12866-021-02120-6 |
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author | Gao, Zhiyuan Hu, Yaya Han, Meikun Xu, Junjie Wang, Xue Liu, Lanfu Tang, Zhonghou Jiao, Weijing Jin, Rong Liu, Ming Guan, Zhengjun Ma, Zhimin |
author_facet | Gao, Zhiyuan Hu, Yaya Han, Meikun Xu, Junjie Wang, Xue Liu, Lanfu Tang, Zhonghou Jiao, Weijing Jin, Rong Liu, Ming Guan, Zhengjun Ma, Zhimin |
author_sort | Gao, Zhiyuan |
collection | PubMed |
description | BACKGROUND: Continuous cropping obstacles from sweet potatoes are widespread, which seriously reduce the yield and quality, causing certain economic losses. Bacteria of rhizospheric soil are the richest and are associated with obstacles to continuous cropping. However, few studies have examined how continuous sweet potato cropping affects the rhizospheric soil bacterial community structure. RESULTS: In the study, the Illumina MiSeq method was used to explore the variations in rhizospheric soil bacterial community structure of different sweet potato varieties after continuous cropping, as well as the correlation between soil characteristics and the bacterial community. The results showed that (1) the dominant bacterial phyla in rhizospheric soils from both Xushu 18 and Yizi 138 were Proteobacteria, Acidobacteria, and Actinobacteria. The most dominant genus was Subgroup 6_norank. The relative abundance of rhizospheric soil bacteria varied significantly between the two sweet potato varieties. (2) The richness and diversity indexes of bacteria were higher in Xushu 18 rhizospheric soil than in Yizi 138 soil after continuous cropping. Moreover, beneficial Lysobacter and Bacillus were more prevalent in Xushu 18, while Yizi 138 contained more harmful Gemmatimonadetes. (3) Soil pH decreased after continuous cropping, and redundancy analysis indicated that soil pH was significantly correlated with the bacterial community. Spearman’s rank correlation coefficient analysis demonstrated that pH was positively associated with Planctomycetes and Acidobacteria, but negatively associated with Actinobacteria and Firmicutes. CONCLUSIONS: After continuous cropping, the bacterial community structure and physicochemical properties of sweet potato rhizospheric soil were changed, and the changes from different sweet potato varieties were different. The contents of Lysobacter and Bacillus were higher in the sweet potato variety resistant to continuous cropping. It provides a basis for developing new microbial fertilizers for sweet potatoes to alleviate the continuous cropping obstacle. |
format | Online Article Text |
id | pubmed-8015022 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-80150222021-04-01 Effects of continuous cropping of sweet potatoes on the bacterial community structure in rhizospheric soil Gao, Zhiyuan Hu, Yaya Han, Meikun Xu, Junjie Wang, Xue Liu, Lanfu Tang, Zhonghou Jiao, Weijing Jin, Rong Liu, Ming Guan, Zhengjun Ma, Zhimin BMC Microbiol Research Article BACKGROUND: Continuous cropping obstacles from sweet potatoes are widespread, which seriously reduce the yield and quality, causing certain economic losses. Bacteria of rhizospheric soil are the richest and are associated with obstacles to continuous cropping. However, few studies have examined how continuous sweet potato cropping affects the rhizospheric soil bacterial community structure. RESULTS: In the study, the Illumina MiSeq method was used to explore the variations in rhizospheric soil bacterial community structure of different sweet potato varieties after continuous cropping, as well as the correlation between soil characteristics and the bacterial community. The results showed that (1) the dominant bacterial phyla in rhizospheric soils from both Xushu 18 and Yizi 138 were Proteobacteria, Acidobacteria, and Actinobacteria. The most dominant genus was Subgroup 6_norank. The relative abundance of rhizospheric soil bacteria varied significantly between the two sweet potato varieties. (2) The richness and diversity indexes of bacteria were higher in Xushu 18 rhizospheric soil than in Yizi 138 soil after continuous cropping. Moreover, beneficial Lysobacter and Bacillus were more prevalent in Xushu 18, while Yizi 138 contained more harmful Gemmatimonadetes. (3) Soil pH decreased after continuous cropping, and redundancy analysis indicated that soil pH was significantly correlated with the bacterial community. Spearman’s rank correlation coefficient analysis demonstrated that pH was positively associated with Planctomycetes and Acidobacteria, but negatively associated with Actinobacteria and Firmicutes. CONCLUSIONS: After continuous cropping, the bacterial community structure and physicochemical properties of sweet potato rhizospheric soil were changed, and the changes from different sweet potato varieties were different. The contents of Lysobacter and Bacillus were higher in the sweet potato variety resistant to continuous cropping. It provides a basis for developing new microbial fertilizers for sweet potatoes to alleviate the continuous cropping obstacle. BioMed Central 2021-04-01 /pmc/articles/PMC8015022/ /pubmed/33794774 http://dx.doi.org/10.1186/s12866-021-02120-6 Text en © The Author(s) 2021 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data. |
spellingShingle | Research Article Gao, Zhiyuan Hu, Yaya Han, Meikun Xu, Junjie Wang, Xue Liu, Lanfu Tang, Zhonghou Jiao, Weijing Jin, Rong Liu, Ming Guan, Zhengjun Ma, Zhimin Effects of continuous cropping of sweet potatoes on the bacterial community structure in rhizospheric soil |
title | Effects of continuous cropping of sweet potatoes on the bacterial community structure in rhizospheric soil |
title_full | Effects of continuous cropping of sweet potatoes on the bacterial community structure in rhizospheric soil |
title_fullStr | Effects of continuous cropping of sweet potatoes on the bacterial community structure in rhizospheric soil |
title_full_unstemmed | Effects of continuous cropping of sweet potatoes on the bacterial community structure in rhizospheric soil |
title_short | Effects of continuous cropping of sweet potatoes on the bacterial community structure in rhizospheric soil |
title_sort | effects of continuous cropping of sweet potatoes on the bacterial community structure in rhizospheric soil |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8015022/ https://www.ncbi.nlm.nih.gov/pubmed/33794774 http://dx.doi.org/10.1186/s12866-021-02120-6 |
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