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Title 

Isolation and characterization of bacteria associated with two sand dune plant species, Calystegia soldanella and Elymus mollis

Authors 

Myung Soo ParkSe Ra JungMyoung Sook LeeKyoung Ok KimJin Ok DoKang Hyun LeeS B KimKyung Sook Bae

Publisher 

Microbiological Society of Korea

Issue Date 

2005

Citation 

Journal of Microbiology, vol. 43, no. 3, pp. 219-227

Keywords 

16S rDNA sequenceendophytic bacteriapseudomonasrhizobacteriasand dune plantbacterial DNAbacteriumcalystegiaelymusisolation and purification

Abstract 

Little is known about the bacterial communities associated with the plants inhabiting sand dune ecosystems. In this study, the bacterial populations associated with two major sand dune plant species, Calystegia soldanella (beach morning glory) and Elymus mollis (wild rye), growing along the costal areas in Tae-An, Chungnam Province, were analyzed using a culture-dependent approach. A total of 212 bacteria were isolated from the root and rhizosphere samples of the two plants, and subjected to further analysis. Based on the analysis of the 16S rDNA sequences, all the bacterial isolates were classified into six major phyla of the domain Bacteria. Significant differences were observed between the two plant species, and also between the rhizospheric and root endophytic communities. The isolates from the rhizosphere of the two plant species were assigned to 27 different established genera, and the root endophytic bacteria were assigned to 21. Members of the phylum Gammaproteobacteria, notably the Pseudomonas species, comprised the majority of both the rhizospheric and endophytic bacteria, followed by members of Bacteroidetes and Firmicutes in the rhizosphere and Alphaproteobacteria and Bacteroidetes in the root. A number of isolates were recognized as potentially novel bacterial taxa. Fifteen out of 27 bacterial genera were commonly found in the rhizosphere of both plants, which was comparable to 3 out of 21 common genera in the root, implying the host specificity for endophytic populations. This study of the diversity of culturable rhizospheric and endophytic bacteria has provided the basis for further investigation aimed at the selection of microbes for the facilitation of plant growth.

ISSN 

1225-8873

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2017-04-19


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