Journal of Microbiology

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Ship Hull‑Fouling Diatoms on Korean Research Vessels Revealed by Morphological and Molecular Methods, and Their Environmental Implications: Jaeyeong Park , Taehee Kim , Buhari Lawan Muhammad , Jang-Seu Ki; J. Microbiol. 2023;61(6):615-626. Published online May 25, 2023; DOI: https://doi.org/10.1007/s12275-023-00055-3

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Ship biofouling is one of the main vectors for the introduction and global spread of non-indigenous organisms. Diatoms were the early colonizers of ship hulls; however, their community composition on ships is poorly understood. Herein, we investigated the diatom community on the hull samples collected from two Korean research vessels Isabu (IRV) and Onnuri (ORV) on September 2 and November 10, 2021, respectively. IRV showed low cell density (345 cells/cm2) compared to ORV (778 cells/cm2). We morphologically identified more than 15 species of diatoms from the two research vessels (RVs). The microalgae in both RVs were identified as Amphora, Cymbella, Caloneis, Halamphora, Navicula, Nitzschia, and Plagiogramma. Of them, the genus Halamphora was found to be predominant. However, both RVs had a varied dominant species with a significant difference in body size; Halamphora oceanica dominated at IRV, and Halamphora sp. at ORV, respectively. Molecular cloning showed similar results to morphological analysis, in which Halamphora species dominated in both RVs. The hull-attached species were distinct from species found in the water column. These results revealed diatoms communities that are associated with ship hull-fouling at an early stage of biofilm formation. Moreover, ships arriving from different regions could show some variation in species composition on their hull surfaces, with the potential for nonindigenous species introduction.

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Invasion and ecological impact of the biofouling tube worm Hydroides elegans (Polychaeta: Serpulidae) in Korean coastal waters
Sang Lyeol Kim, Ok Hwan Yu
Frontiers in Marine Science.2025;[Epub] CrossRef
High haplotype diversity and strong phylogeographic structure in the invasive jellyfish Blackfordia virginica population highlight its complex demographic history in Korea
Buhari Lawan Muhammad, Jinho Chae, Jang-Seu Ki
Marine Biodiversity.2024;[Epub] CrossRef

Tardibacter chloracetimidivorans gen. nov., sp. nov., a novel member of the family Sphingomonadaceae isolated from an agricultural soil from Jeju Island in Republic of Korea: Hyosun Lee , Dong-Uk Kim , Sooyeon Park , Jung-Hoon Yoon , Jae-Hyung Ahn , Jong-Ok Ka; J. Microbiol. 2018;56(5):324-330. Published online May 2, 2018; DOI: https://doi.org/10.1007/s12275-018-7455-2

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Abstract

A pale yellow bacterial strain, designated JJ-A5T, was isolated form an agricultural soil from Jeju Island in Republic of Korea. Cells of the strain were Gram-stain-negative, motile, flagellated and rod-shaped. The strain grew at 15–30°C, pH 6.0–9.0, and in the presence of 0–1.5% (w/v) NaCl. Growth occurred on R2A, but not on Luria-Bertani agar, nutrient agar, trypticase soy agar and MacConkey agar. The strain utilized alachlor as a sole carbon source for growth. The strain JJ-A5T showed 16S rRNA gene sequence similarities lower than 95.4% with members of the family Sphingomonadaceae. Phylogenetic analysis showed that the strain belongs to the family Sphingomonadaceae and strain JJ-A5T was distinctly separated from established genera of this family. The strain contained Q-10 as dominant ubiquinone and spermidine as major polyamine. The predominant cellular fatty acids were summed feature 8 (C18:1 ω7c and/or C18:1 ω6c), summed feature 3 (C16:1 ω7c and/or C16:1 ω6c), 11-methyl C18:1 ω7c, C16:0 and C14:0 2-OH. The major polar lipids were phosphatidylethanolamine, phosphatidylglycerol, sphingoglycolipid, and phosphatidylcholine. The DNA G + C content of the strain was 62.7 mol%. On the basis of the phenotypic, genomic and chemotaxonomic characteristics, strain JJ-A5T is considered to represent a novel genus and species within the family Sphingomonadaceae, for which the name Tardibacter chloracetimidivorans gen. nov., sp. nov. is proposed. The type strain of Tardibacter chloracetimidivorans is JJ-A5T (= KACC 19450T = NBRC 113160T).

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Removal of alachlor from the water/soil environments: The significance of microbial remediation and its biochemical mechanisms
Zeren Li, Mengyi Chen, Wen-Juan Chen, Mingqiu Liu, Guiling Si, Xixian Zhu, Kalpana Bhatt, Sandhya Mishra, Mohamed A. Ghorab, Shaohua Chen
Journal of Water Process Engineering.2024; 68: 106387. CrossRef
Processes governing the environmental fates of alachlor in soil and aqueous media: a critical review
M. U. Ghani, H. N. Asghar, H. Nadeem, M. Shahid, M. A. Zeshan, A. Niaz, S. Hussain, S. Hussain
International Journal of Environmental Science and Technology.2022; 19(8): 8043. CrossRef
New Associations of Aerobic Bacteria that Actively Decompose Lindane
E. A. Nazarova, D. O. Egorova, L. N. Anan’ina, E. S. Korsakova, E. G. Plotnikova
Applied Biochemistry and Microbiology.2021; 57(5): 643. CrossRef

Jindonia aestuariivivens gen. nov., sp. nov., isolated from a tidal flat on the south-western sea in Republic of Korea: Sooyeon Park , Sun Young Yoon , Min-Ji Ha , Jung-Hoon Yoon; J. Microbiol. 2017;55(6):421-427. Published online March 1, 2017; DOI: https://doi.org/10.1007/s12275-017-6621-2

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Abstract

A Gram-stain-negative, aerobic, non-flagellated, and coccoid, ovoid or rod-shaped bacterium, designated JDTF-65T, was isolated from a tidal flat on the south-western sea in Republic of Korea. Strain JDTF-65T grew optimally at 25°C, at pH 7.0– 8.0 and in the presence of 2.0% (w/v) NaCl. Strain JDTF-65T exhibited 16S rRNA gene sequence similarities of 97.1–97.6% to the type strains of ‘Aliisedimentitalea scapharcae’, Phaeo-bacter gallaeciensis, Phaeobacter inhibens, Leisingera aqui-marina, Tropicibacter litoreus, Sulfitobacter pseudonitzschiae, and Pseudoseohaeicola caenipelagi. Phylogenetic trees based on 16S rRNA gene sequences showed that strain JDTF-65T forms an independent lineage within the radiation enclosed by the family Rhodobacteraceae. Strain JDTF-65T contained Q-10 as the predominant ubiquinone and C18:1 ω7c as the major fatty acid. The major polar lipids of strain JDTF-65T were phosphatidylcholine, phosphatidylethanolamine, phos-phatidylglycerol, one unidentified aminolipid, and one un-identified lipid. The DNA G+C content of strain JDTF-65T was 56.8 mol% and its DNA-DNA relatedness values with the type strains of the phylogenetically related species were 13– 27%. Differential phenotypic properties revealed that strain JDTF-65T is separated from representatives of some phylo-genetically related taxa. On the basis of the data presented, strain JDTF-65T represents a new genus and species within the family Rhodobacteraceae, for which the name Jindonia aestuariivivens gen. nov., sp. nov. is proposed. The type strain of Jindonia aestuariivivens is JDTF-65T (=KCTC 52564T =NBRC 112534T).

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Description of Polaribacter batillariae sp. nov., Polaribacter cellanae sp. nov., and Polaribacter pectinis sp. nov., novel bacteria isolated from the gut of three types of South Korean shellfish
Su-Won Jeong, Jeong Eun Han, June-Young Lee, Ji-Ho Yoo, Do-Yeon Kim, In Chul Jeong, Jee-Won Choi, Yun-Seok Jeong, Jae-Yun Lee, So-Yeon Lee, Euon Jung Tak, Hojun Sung, Hyun Sik Kim, Pil Soo Kim, Dong-Wook Hyun, Jin-Woo Bae
Journal of Microbiology.2022; 60(6): 576. CrossRef
Kangsaoukella pontilimi gen. nov., sp. nov., a new member of the family Rhodobacteraceae isolated from a tidal mudflat
Soon Dong Lee, Hanna Choe, Ji-Sun Kim, In Seop Kim
International Journal of Systematic and Evolutionary Microbiology .2020; 70(10): 5235. CrossRef
Kandeliimicrobium roseum gen. nov., sp. nov., a new member of the family Rhodobacteraceae isolated from mangrove rhizosphere soil
Kai-Ling Wang, Zhi-Man Song, Cu-Huang Rong, Ling-Yun Hao, Qi-Liang Lai, Shuang-Fei Li, Ying Xu
International Journal of Systematic and Evolutionary Microbiology .2018; 68(7): 2158. CrossRef
Pseudopontivivens aestuariicola gen. nov., sp. nov., a Novel Bacterium of the Class Alphaproteobacteria Isolated from a Tidal Flat
Sooyeon Park, Jeehyun Choi, Ji-Min Park, Jung-Hoon Yoon
Current Microbiology.2018; 75(11): 1516. CrossRef

Research Support, Non-U.S. Gov't

Aliisedimentitalea scapharcae gen. nov., sp. nov., isolated from ark shell Scapharca broughtonii: Young-Ok Kim , Sooyeon Park , Bo-Hye Nam , Dong-Gyun Kim , Sung-Min Won , Ji-Min Park , Jung-Hoon Yoon; J. Microbiol. 2015;53(8):495-502. Published online July 31, 2015; DOI: https://doi.org/10.1007/s12275-015-5075-7

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Abstract

A Gram-negative, aerobic, non-spore-forming, motile and ovoid or rod-shaped bacterial strain, designated MA2-16T, was isolated from ark shell (Scapharca broughtonii) collected from the South Sea, South Korea. Strain MA2-16T was found to grow optimally at 30캜, at pH 7.0?.0 and in the presence of 2.0% (w/v) NaCl. Neighbour-joining, maximum-likelihood and maximum-parsimony phylogenetic trees based on 16S rRNA gene sequences revealed that strain MA2-16T clustered with the type strain of Sedimentitalea nanhaiensis. The novel strain exhibited a 16S rRNA gene sequence similarity value of 97.1% to the type strain of S. nanhaiensis. In the neighbour- joining phylogenetic tree based on gyrB sequences, strain MA2-16T formed an evolutionary lineage independent of those of other taxa. Strain MA2-16T contained Q-10 as the predominant ubiquinone and C18:1 ?c and 11-methyl C18:1 ?c as the major fatty acids. The major polar lipids of strain MA2-16T were phosphatidylcholine, phosphatidylglycerol, phosphatidylethanolamine, an unidentified aminolipid and an unidentified lipid. The DNA G+C content of strain MA2- 16T was 57.7 mol% and its DNA-DNA relatedness values with the type strains of S. nanhaiensis and some phylogenetically related species of the genera Leisingera and Phaeobacter were 13?4%. On the basis of the data presented, strain MA2-16T is considered to represent a novel genus and novel species within the family Rhodobacteraceae, for which the name Aliisedimentitalea scapharcae gen. nov., sp. nov. is proposed. The type strain is MA2-16T (=KCTC 42119T =CECT 8598T).

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Genomic profiling of biosynthetic potentials of medicinal secondary metabolites for ‘Aliisedimentitalea scapharcae’ KCTC 42119T, isolated from ark shell
Jin-Cheng Rong, Lin-Lin Cui, Na Li, Mao-Li Yi, Bo-Tao Huang, Qi Zhao
Marine Genomics.2024; 76: 101124. CrossRef
Jindonia aestuariivivens gen. nov., sp. nov., isolated from a tidal flat on the south-western sea in Republic of Korea
Sooyeon Park, Sun Young Yoon, Min-Ji Ha, Jung-Hoon Yoon
Journal of Microbiology.2017; 55(6): 421. CrossRef
Litorisediminivivens gilvus gen. nov., sp. nov., isolated from a tidal flat
Sooyeon Park, Min-Ji Ha, Yong-Taek Jung, Jung-Hoon Yoon
International Journal of Systematic and Evolutionary Microbiology.2016; 66(11): 4681. CrossRef

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