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Diversity and composition of rhizospheric soil and root endogenous bacteria in Panax notoginseng during continuous cropping practices.
J Basic Microbiol. 2017 Apr; 57(4):337-344.JB

Abstract

Rhizobacteria and endophytic bacteria play important roles in protecting host plants from infection by phytopathogens, which cause soil-borne diseases and severely impair plant health. Panax notoginseng is negatively affected by continuous cropping and becomes vulnerable to attack by microbial pathogens. In the present study, culture-independent Illumina MiSeq was used to investigate root-endophytic and rhizospheric bacteria in response to continuous cropping of P. notoginseng. Numbers of rhizospheric bacteria decreased with continuous P. notoginseng cropping, while the effects of continuous cropping on endophytic bacteria were not statistically significant. Bacterial diversity was higher in healthy P. notoginseng rhizospheric soils and roots than in those of diseased P. notoginseng. The most dominant phyla detected during continuous cropping were Proteobacteria, Cyanobacteria, Actinobacteria, and Acidobacteria. The genera Pseudomonas, Rhodoplanes, Candidatus Solibacter, and Streptomyces were dominant in P. notoginseng rhizospheric soils and roots. Erwinia, Stenotrophomonas, Pseudomonas, and Sphingobium were specifically detected in relatively high proportions among root-rot rhizospheric bacteria and endogenous root bacteria in plants under continuous cropping, suggesting that they may be the pathogens responsible for the negative effects of continuous cropping on P. notoginseng. Based on canonical correspondence analysis of the bacterial communities that were identified from healthy plants and fallow soils, total phosphorus (P), pH, and organic soil matter exerted the greatest impacts upon bacterial community composition during continuous cropping. In general, continuous cropping practices for P. notoginseng and severe root-rot disease notably affected the community structure and the diversity of rhizospheric and root endophytic bacteria. Our study elucidated the ecological significance of microbial communities in healthy plant maintenance, and our results may inform biological control strategies during the continuous cropping of P. notoginseng.

Authors+Show Affiliations

Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China.Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China.Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China.Department of Biology, University of Texas Rio Grande Valley, Edinburg, Texas.Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China.Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China.Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28060404

Citation

Tan, Yong, et al. "Diversity and Composition of Rhizospheric Soil and Root Endogenous Bacteria in Panax Notoginseng During Continuous Cropping Practices." Journal of Basic Microbiology, vol. 57, no. 4, 2017, pp. 337-344.
Tan Y, Cui Y, Li H, et al. Diversity and composition of rhizospheric soil and root endogenous bacteria in Panax notoginseng during continuous cropping practices. J Basic Microbiol. 2017;57(4):337-344.
Tan, Y., Cui, Y., Li, H., Kuang, A., Li, X., Wei, Y., & Ji, X. (2017). Diversity and composition of rhizospheric soil and root endogenous bacteria in Panax notoginseng during continuous cropping practices. Journal of Basic Microbiology, 57(4), 337-344. https://doi.org/10.1002/jobm.201600464
Tan Y, et al. Diversity and Composition of Rhizospheric Soil and Root Endogenous Bacteria in Panax Notoginseng During Continuous Cropping Practices. J Basic Microbiol. 2017;57(4):337-344. PubMed PMID: 28060404.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Diversity and composition of rhizospheric soil and root endogenous bacteria in Panax notoginseng during continuous cropping practices. AU - Tan,Yong, AU - Cui,Yinshan, AU - Li,Haoyu, AU - Kuang,Anxiu, AU - Li,Xiaoran, AU - Wei,Yunlin, AU - Ji,Xiuling, Y1 - 2017/01/06/ PY - 2016/07/21/received PY - 2016/11/10/revised PY - 2016/12/16/accepted PY - 2017/1/7/pubmed PY - 2017/4/22/medline PY - 2017/1/7/entrez KW - Panax notoginseng KW - continuous cropping KW - endogenous bacteria KW - rhizobacteria SP - 337 EP - 344 JF - Journal of basic microbiology JO - J. Basic Microbiol. VL - 57 IS - 4 N2 - Rhizobacteria and endophytic bacteria play important roles in protecting host plants from infection by phytopathogens, which cause soil-borne diseases and severely impair plant health. Panax notoginseng is negatively affected by continuous cropping and becomes vulnerable to attack by microbial pathogens. In the present study, culture-independent Illumina MiSeq was used to investigate root-endophytic and rhizospheric bacteria in response to continuous cropping of P. notoginseng. Numbers of rhizospheric bacteria decreased with continuous P. notoginseng cropping, while the effects of continuous cropping on endophytic bacteria were not statistically significant. Bacterial diversity was higher in healthy P. notoginseng rhizospheric soils and roots than in those of diseased P. notoginseng. The most dominant phyla detected during continuous cropping were Proteobacteria, Cyanobacteria, Actinobacteria, and Acidobacteria. The genera Pseudomonas, Rhodoplanes, Candidatus Solibacter, and Streptomyces were dominant in P. notoginseng rhizospheric soils and roots. Erwinia, Stenotrophomonas, Pseudomonas, and Sphingobium were specifically detected in relatively high proportions among root-rot rhizospheric bacteria and endogenous root bacteria in plants under continuous cropping, suggesting that they may be the pathogens responsible for the negative effects of continuous cropping on P. notoginseng. Based on canonical correspondence analysis of the bacterial communities that were identified from healthy plants and fallow soils, total phosphorus (P), pH, and organic soil matter exerted the greatest impacts upon bacterial community composition during continuous cropping. In general, continuous cropping practices for P. notoginseng and severe root-rot disease notably affected the community structure and the diversity of rhizospheric and root endophytic bacteria. Our study elucidated the ecological significance of microbial communities in healthy plant maintenance, and our results may inform biological control strategies during the continuous cropping of P. notoginseng. SN - 1521-4028 UR - https://www.unboundmedicine.com/medline/citation/28060404/Diversity_and_composition_of_rhizospheric_soil_and_root_endogenous_bacteria_in_Panax_notoginseng_during_continuous_cropping_practices_ L2 - https://doi.org/10.1002/jobm.201600464 DB - PRIME DP - Unbound Medicine ER -