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Diversity and composition of active and total bacteria in rhizospheric soil in response to continuous cropping years of Panax notoginseng
Y. Liu, L. Bao, W. Sun, Y. Cui, X. Li, X. Ji, Y. Wei, Y. Tan
Language English Country Czech Republic
Document type Journal Article
Grant support
No. 31960630
National Natural Science Foundation of China
31960232
National Natural Science Foundation of China
- MeSH
- Bacteria * classification genetics isolation & purification MeSH
- Biodiversity * MeSH
- DNA, Bacterial genetics MeSH
- Phylogeny * MeSH
- Plant Roots microbiology MeSH
- Plant Diseases microbiology MeSH
- Panax notoginseng * microbiology MeSH
- Soil chemistry MeSH
- Soil Microbiology * MeSH
- Rhizosphere * MeSH
- RNA, Ribosomal, 16S genetics MeSH
- Publication type
- Journal Article MeSH
The synchronous research and analysis of total and active soil microbial communities can provide insight into how these communities are impacted by continuous cropping years and pathogen infection. The diversity of total and active bacteria in rhizospheric soil of 2-year-old and 3-year-old healthy and diseased Panax notoginseng can comprehensively reveal the bacterial response characteristics in continuous cropping practice. The results showed that 4916 operational taxonomic units (OTUs) were found in the rhizospheric soil bacterial community of P. notoginseng at the DNA level, but only 2773 OTUs were found at the RNA level. The rhizospheric environment had significant effects on the active and bacterial communities, as indicated by the number of OTUs, Shannon, Chao1, Faith's phylogenetic diversity (Faith's PD), and Simpson's diversity indexes. The DNA level can better show the difference in diversity level before and after infection with root rot. The bacterial Chao1 and Faith's PD diversity indexes of 2-year-old root rot-diseased P. notoginseng rhizospheric soil (D2) were higher than that of healthy plants, while the bacterial Shannon diversity index of 3-year-old root rot-diseased P. notoginseng rhizospheric soil (D3) was the lowest in the total bacteria. Principal coordinate analysis (PCoA) illustrated that the total bacterial species composition changed markedly after root rot disease. There were significant differences in the composition of active bacterial species between the 2-year and 3-year rhizospheres. In conclusion, the total and active edaphic rhizospheric bacterial communities could provide important opportunities to understand the responses of bacteria to continuous cropping of P. notoginseng.
References provided by Crossref.org
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