title: [Endophytic bacterial diversity in Codonopsis pilosula, Ephedra sinica, and Lamiophlomis rotate: a study with LH-PCR].
abstract: To investigate the endophytic bacterial diversity in the three medicinal plant species Codonopsis pilosula, Ephedra sinica, and Lamiophlomis rotata in Ganzi of Sichuan, Southwest China, the total DNA of the three species were extracted by stringent surface sterilization, and studied with length heterogeneity-PCR (LH-PCR) method. For the same plant species, their root-, stem-, and leaf LH-PCR profiles were in a high level of similarity, with little differences in band richness. However, there existed great differences in the LH-PCR profiles among different plant species. C. pilosula had the biggest band richness, followed by E. sinica, and L. rotata. In the three plant species, the endophytic bacteria with an approximately 474 bp DNA length were dominant. The endophytic bacterial diversity of the plants was negatively correlated with rhizosphere soil available phosphorus content, but positively correlated with rhizosphere soil pH. Elevation and rhizosphere soil total nitrogen content were the important environmental factors affecting the distribution of enophytic bacteria in these plant species. The information of population diversity obtained from LH-PCR could more intuitively reflect the differences of bacterial diversity among different plant species, and thus, LH-PCR would be available to be used for analyzing the endophytic bacterial diversity in medicinal plants, providing information and guidance for the further isolation of microbial resources.
authors.affiliation: Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China. kerrylee_tw@sina.com
authors.forename: Xiao-Lin
authors.initials: XL
authors.lastname: Li
authors.affiliation: Department of Microbiology, College of Resource and Environment, Sichuan Agricultural University, Chengdu 610031, China.
authors.forename: Hua-Ming
authors.initials: HM
authors.lastname: Jiang
authors.affiliation: Department of Microbiology, College of Resource and Environment, Sichuan Agricultural University, Chengdu 610031, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Zhang
authors.affiliation: College of Animal Science and Technology, Sichuan Agricultural University, Ya' an 625014, Sichuan, China.
authors.forename: Guo-Qing
authors.initials: GQ
authors.lastname: Tang
authors.affiliation: Department of Food and Environmental Sciences, University of Helsinki, FI-00014, Helsinki, Finland.
authors.forename: Petri
authors.initials: P
authors.lastname: Penttinen
authors.affiliation: Department of Food and Environmental Sciences, University of Helsinki, FI-00014, Helsinki, Finland.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Zeng
authors.affiliation: Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China.
authors.forename: Lin-Yong
authors.initials: LY
authors.lastname: Zheng
authors.affiliation: Department of Microbiology, College of Resource and Environment, Sichuan Agricultural University, Chengdu 610031, China.
authors.forename: Xiao-Ping
authors.initials: XP
authors.lastname: Zhang
mesh_terms: D001419:Bacteria / Q000145:classification* / Q000235:genetics; D044822:Biodiversity; D029745:Codonopsis / Q000254:growth & development / Q000382:microbiology*; D016172:DNA Fingerprinting; D004269:DNA, Bacterial / Q000235:genetics; D004275:DNA, Ribosomal / Q000235:genetics; D060026:Endophytes / Q000145:classification* / Q000235:genetics; D029790:Ephedra sinica / Q000254:growth & development / Q000382:microbiology*; D019686:Lamiaceae / Q000254:growth & development / Q000382:microbiology*; D016133:Polymerase Chain Reaction; D013559:Symbiosis
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal