Historical record of lead accumulation and source in the tidal flat of Haizhou Bay, Yellow Sea: Insights from lead isotopes

Three Gram-variable, rod-shaped bacterial strains, TF-16T, TF-19 and TF-80T, were isolated from a tidal flat of Daepo Beach (Yellow Sea) near Mokpo City, Korea, and their taxonomic positions were investigated by a polyphasic approach. These isolates grew optimally in the presence of 2 % NaCl and at 30 °C. Their peptidoglycan types were based on l-Lys–Gly. The predominant menaquinone detected in the three strains was MK-7. The three strains contained large amounts of the branched fatty acids iso-C17 : 0, anteiso-C13 : 0, iso-C13 : 0 and iso-C15 : 0. The DNA G+C contents of strains TF-16T, TF-19 and TF-80T were 48·6, 48·4 and 48·0 mol%, respectively. The three strains formed a coherent cluster with Exiguobacterium species in a phylogenetic tree based on 16S rRNA gene sequences. They showed closest phylogenetic affiliation to Exiguobacterium aurantiacum, with 16S rRNA gene sequence similarity values of 98·1–98·3 %. The three strains exhibited 16S rRNA gene sequence similarity values of 94·0–94·6 % to the type strains of other Exiguobacterium species. Levels of DNA–DNA relatedness indicated that strains TF-16T and TF-19 and strain TF-80T are members of two species that are separate from E. aurantiacum. On the basis of phenotypic, phylogenetic and genetic data, strains TF-16T and TF-19 and strain TF-80T represent two novel species in the genus Exiguobacterium; the names Exiguobacterium aestuarii sp. nov. (type strain TF-16T=KCTC 19035T=DSM 16306T; reference strain TF-19) and Exiguobacterium marinum sp. nov. (type strain TF-80T=KCTC 19036T=DSM 16307T) are proposed.

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Erythrobacter luteolus sp. nov., isolated from a tidal flat of the Yellow Sea in Korea

INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY ◽

10.1099/ijs.0.63522-0 ◽

2005 ◽

Vol 55 (3) ◽

pp. 1167-1170 ◽

Cited By ~ 46

Author(s):

Jung-Hoon Yoon ◽

Kook Hee Kang ◽

Soo-Hwan Yeo ◽

Tae-Kwang Oh

Keyword(s):

16S Rrna ◽

16S Rrna Gene ◽

Tidal Flat ◽

Yellow Sea ◽

Sequence Similarity ◽

Phylogenetic Analyses ◽

Major Fatty Acid ◽

The Yellow Sea ◽

Rrna Gene ◽

Phenotypic Properties

A Gram-negative, non-spore-forming, yellow-pigmented, slightly halophilic bacterial strain, SW-109T, was isolated from a tidal flat of the Yellow Sea in Korea, and subjected to a polyphasic taxonomic study. This isolate did not produce bacteriochlorophyll a and contained ubiquinone-10 as the predominant respiratory lipoquinone and C18 : 1 ω7c as the major fatty acid. The DNA G+C content was 60·3 mol%. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain SW-109T is phylogenetically affiliated to the genus Erythrobacter of the family Sphingomonadaceae. Strain SW-109T exhibited levels of 16S rRNA gene sequence similarity to the type strains of Erythrobacter species of 94·0–96·3 %, making it possible to categorize strain SW-109T as a species that is separate from previously recognized Erythrobacter species. On the basis of its phenotypic properties and phylogenetic distinctiveness, SW-109T (=KCTC 12311T=JCM 12599T) was classified as the type strain of a novel Erythrobacter species, for which the name Erythrobacter luteolus sp. nov. is proposed.

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Distribution of diatoms in the surficial sediments of the Mangyung-Dongjin tidal flat, west coast of Korea (Eastern Yellow Sea)

Marine Biology ◽

10.1007/bf00350883 ◽

1995 ◽

Vol 122 (3) ◽

pp. 487-496 ◽

Cited By ~ 28

Author(s):

S. -H. Oh ◽

C. -H. Koh

Keyword(s):

West Coast ◽

Tidal Flat ◽

Yellow Sea ◽

Surficial Sediments ◽

West Coast Of Korea

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Bacillus gaemokensis sp. nov., isolated from foreshore tidal flat sediment from the Yellow Sea

The Journal of Microbiology ◽

10.1007/s12275-010-0148-0 ◽

2010 ◽

Vol 48 (6) ◽

pp. 867-871 ◽

Cited By ~ 33

Author(s):

Min-Young Jung ◽

Woon Kee Paek ◽

In-Soon Park ◽

Jeong-Ran Han ◽

Yeseul Sin ◽

...

Keyword(s):

Tidal Flat ◽

Yellow Sea ◽

The Yellow Sea ◽

Tidal Flat Sediment

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Draft Genome Sequence of Bacillus marisflavi TF-11 T (JCM 11544), a Carotenoid-Producing Bacterium Isolated from Seawater from a Tidal Flat in the Yellow Sea

Genome Announcements ◽

10.1128/genomea.01451-15 ◽

2015 ◽

Vol 3 (6) ◽

Cited By ~ 3

Author(s):

Jie-ping Wang ◽

Bo Liu ◽

Guo-hong Liu ◽

De-ju Chen ◽

Qian-qian Chen ◽

...

Keyword(s):

Genome Sequence ◽

Tidal Flat ◽

Yellow Sea ◽

Draft Genome ◽

The Yellow Sea ◽

Draft Genome Sequence ◽

Gram Positive

Bacillus marisflavi TF-11 T (JCM 11544) is a Gram-positive, spore-forming, and carotenoid-producing bacterium isolated from seawater from a tidal flat in the Yellow Sea. Here, we report the first draft genome sequence of B. marisflavi TF-11 T , which comprises 4.31 Mb in 11 scaffolds with a G+C content of 48.57%.

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Stable Carbon and Nitrogen Isotopes in the Tidal Flat Sediments of Northern Yellow Sea

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.316-317.223 ◽

2013 ◽

Vol 316-317 ◽

pp. 223-226

Author(s):

Bao Zhan Liu ◽

Yu Liu ◽

Ying Li ◽

Hai Xia Wang

Keyword(s):

Organic Matter ◽

Tidal Flat ◽

Yellow Sea ◽

Nitrogen Isotopes ◽

Stable Carbon ◽

Terrestrial Organic Matter ◽

Δ13c And Δ15n ◽

Carbon And Nitrogen Isotopes ◽

Carbon And Nitrogen ◽

Northern Yellow Sea

Stable carbon and nitrogen compositions (δ13C, δ15N) of sedimentary organic matter were determined in the tidal flat of northern Yellow sea. The results showed that stable carbon and nitrogen isotopes compositions of the sediment samples ranged from −24.669～−19.457‰ and 2.125～7.043‰, respectively. The highest value was in St.DLD, and the lowest was in St.Z. Similar δ13C values were observed in St.H (−21.996±0.651‰) and St.P (−22.021±0.187‰), and similar δ15N values were between St.DLJ (5.502±0.223‰) and St.P (5.310±0.294‰). The δ13C and δ15N values did not show any significant regularity. The δ13C and δ15N signatures showed some fluctuation, no obvious regularity. The major source of terrestrial organic matter was from the emissions of river and human pollutant.

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A barrier to gene flow in the Asian paddle crab, Charybdis japonica, in the Yellow Sea

ICES Journal of Marine Science ◽

10.1093/icesjms/fsv020 ◽

2015 ◽

Vol 72 (5) ◽

pp. 1440-1448 ◽

Cited By ~ 6

Author(s):

Zhiqiang Han ◽

Wei Zheng ◽

Wenbin Zhu ◽

Cungen Yu ◽

Bonian Shui ◽

...

Keyword(s):

Gene Flow ◽

Genetic Structure ◽

Yellow Sea ◽

Population Expansion ◽

The Yellow Sea ◽

Northwestern Pacific ◽

Factors Affecting ◽

Haizhou Bay ◽

Coastal Species ◽

Charybdis Japonica

Abstract Three primary factors affecting genetic patterns of marine species in the Northwestern Pacific Ocean have been proposed: isolation and population expansion during Pleistocene glacial cycles, ocean currents facilitating the gene flow, and the Yangtze River outflow imposing a physical barrier to gene flow. Here, we examined these factors affecting population structuring of the Asian paddle crab, Charybdis japonica, in the Yellow Sea, East China Sea, and adjacent areas. Genetic variation in nine populations of C. japonica (n = 169) was determined from partial mitochondrial cytochrome c oxidase subunit I sequences. Among the 14 haplotypes identified, a dominant haplotype H1 was present in all populations, and a relatively abundant localized haplotype H2 was found in four of the northern populations. Furthermore, the frequency of the common haplotype H1 decreased from south to north. A genetic discontinuity was detected in Haizhou Bay, which divided species into two groups (north group and south group). The lack of genetic structure in the south and north groups indicates high dispersal of C. japonica within groups. Local marine gyres in Haizhou Bay might be responsible for the divergence of the north and south groups. Our study highlights the importance of local marine gyres for influencing genetic structure in marine coastal species in the Northwestern Pacific, especially in species spawning inshore.

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