title: Specific rhizobacterial resources: characterization and comparative analysis from contrasting coastal environments of Korea.
abstract: This study analyzed the rhizobacterial distribution from two coasts, which show contrasting climates and geographical and geological characteristics, to secure specific microbial resources. Furthermore, rhizobacteria were characterized and the results were comparatively analyzed with reference to the characteristics of two coastal environments. For this purpose, three representative halophyte species communities native to the Dokdo Islands and the East Sea coast of Korea were selected. Partial identification of rhizobacteria showed a clear difference between each sampling site and halophyte. Furthermore, isolates were characterized by their growth properties under NaCl or pH gradients related with previous geographical, geological, and climatic studies of the Dokdo Islands and the East Sea coast. A high proportion of the East Sea isolates showed halotolerance, but a high proportion of Dokdo isolates shared halophilic traits. Meanwhile, a higher proportion of East Sea isolates grew at a wider range of pH values than those of the Dokdo Islands. The results of our study suggest that unique rhizobacterial resources developed under specific rhizospheric conditions derived from halophytes interacting with their specific environment, even within the same coastal halophytic species. Therefore, this study proposes the necessity of securing characterized and unique microbial resources to apply to specific environments for the purpose of recovering and restoring sand dunes or salt-damaged agricultural lands.
authors.affiliation: School of Life Science, Kyungpook National University, Daegu, Republic of Korea.|Horticultural & Herbal Crop Environment Division, National Institute of Horticultural & Herbal Science, Rural Development Administration, Wanju, Republic of Korea.
authors.forename: Young-Hyun
authors.initials: YH
authors.lastname: You
authors.affiliation: School of Life Science, Kyungpook National University, Daegu, Republic of Korea.|Distribution Safety Team, Safety Center, LOTTE R&D Center, Seoul, Republic of Korea.
authors.forename: Jong Myong
authors.initials: JM
authors.lastname: Park
authors.affiliation: Horticultural & Herbal Crop Environment Division, National Institute of Horticultural & Herbal Science, Rural Development Administration, Wanju, Republic of Korea.
authors.forename: Jong-Han
authors.initials: JH
authors.lastname: Park
authors.affiliation: School of Life Science, Kyungpook National University, Daegu, Republic of Korea.
authors.forename: Jong-Guk
authors.initials: JG
authors.lastname: Kim
mesh_terms: D001483:Base Sequence; D044822:Biodiversity; D002980:Climate; D004269:DNA, Bacterial / Q000235:genetics; D004275:DNA, Ribosomal / Q000235:genetics; D010641:Phenotype; D010802:Phylogeny; D018517:Plant Roots / Q000382:microbiology; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D056910:Republic of Korea; D012231:Rhizobium / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification*; D058441:Rhizosphere; D054712:Salinity; D055051:Salt-Tolerant Plants / Q000737:chemistry / Q000254:growth & development / Q000382:microbiology*; D017422:Sequence Analysis, DNA; D012965:Sodium Chloride / Q000737:chemistry / Q000378:metabolism; D012987:Soil / Q000737:chemistry; D012988:Soil Microbiology
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D012336:RNA, Ribosomal, 16S; D012987:Soil; D012965:Sodium Chloride
keywords: Coastal environment; Dokdo Islands; East Sea; Halophyte; Rhizobacteria