Antarcticimonas flava gen. nov., sp. nov., isolated from Antarctic coastal seawater

Yang, Seung‐Jo; Oh, Hyun-Myung; Chung, Sangyun; Cho, Jang-Cheon

doi:10.1007/s12275-009-0225-4

Cited by 17 publications

(6 citation statements)

References 41 publications

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“…Some pigmented bacteria of Antarctic soil samples owe their colors to the presence of carotenoids [ 297 ]. A similar phenomenon is described for Antarctic marine bacteria Antarcticimonas flava [ 298 ] and Muricauda antarctica [ 299 ], which are marine members of the Flavobacteriaceae isolated from Antarctic seawater, and from heterotrophic bacteria isolated in water samples from lakes and supraglacial fluvial system [ 300 ]. Other examples include the Antarctic cyanobacteria Anabaena , Nostoc and Phormidium, which contain higher carotenoid content than their corresponding tropical strains [ 301 ].…”

Section: Uv Photoprotection In Marine Organisms: Antarctic and Nonsupporting

confidence: 63%

UV-Protective Compounds in Marine Organisms from the Southern Ocean

et al. 2018

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Solar radiation represents a key abiotic factor in the evolution of life in the oceans. In general, marine, biota—particularly in euphotic and dysphotic zones—depends directly or indirectly on light, but ultraviolet radiation (UV-R) can damage vital molecular machineries. UV-R induces the formation of reactive oxygen species (ROS) and impairs intracellular structures and enzymatic reactions. It can also affect organismal physiologies and eventually alter trophic chains at the ecosystem level. In Antarctica, physical drivers, such as sunlight, sea-ice, seasonality and low temperature are particularly influencing as compared to other regions. The springtime ozone depletion over the Southern Ocean makes organisms be more vulnerable to UV-R. Nonetheless, Antarctic species seem to possess analogous UV photoprotection and repair mechanisms as those found in organisms from other latitudes. The lack of data on species-specific responses towards increased UV-B still limits the understanding about the ecological impact and the tolerance levels related to ozone depletion in this region. The photobiology of Antarctic biota is largely unknown, in spite of representing a highly promising reservoir in the discovery of novel cosmeceutical products. This review compiles the most relevant information on photoprotection and UV-repair processes described in organisms from the Southern Ocean, in the context of this unique marine polar environment.

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Section: Uv Photoprotection In Marine Organisms: Antarctic and Nonsupporting

confidence: 63%

UV-Protective Compounds in Marine Organisms from the Southern Ocean

et al. 2018

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“…The description is according to Yang et al (2009). In addition, cells are positive for egg yolk hydrolysis and negative for the hydrolysis of DNA, l -tyrosine, Tweens 20 and 80, CM-cellulose and xylan.…”

Section: Emended Description Of Antarcticimonas Flava Yang Et Al 2009mentioning

confidence: 99%

“… * Data from Kim et al (2012b). † Data from Park et al (2013). ‡ Data from Khan et al (2007). § Data from Li et al (2013). ||Data from Yang et al (2009). ¶ Data from Kwon et al (2014). …”

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confidence: 99%

“…Strain CC-PY-50 T accommodated menaquinone-6 (MK-6) as the sole respiratory quinone, which is in line with Sediminibacter furfurosus NBRC 101622 T (Khan et al , 2007). On the other hand, Corallibacter vietnamensis JCM 17525 T , Geojedonia litorea KCTC 32260 T , Mangrovimonas yunxiaonensis LMG 27142 T , Antarcticimonas flava NBRC 103398 T and Hoppeia youngheungensis JCM 19488 T have also been reported to possess MK-6 as the predominant respiratory quinone (Kim et al , 2012b; Park et al , 2013; Li et al , 2013; Yang et al , 2009; Kwon et al , 2014). Members of the family Flavobacteriaceae are known to possess MK-6 as their only or major respiratory quinone (Bernardet et al , 2002; Bernardet & Nakagawa, 2006).…”

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confidence: 99%

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Hanstruepera neustonica gen. nov., sp. nov., a zeaxanthin-producing member of the family Flavobacteriaceae isolated from estuarine water, and emendation of Sediminibacter furfurosus Khan et al. 2007 emend. Kwon et al. 2014, Mangrovimonas yunxiaonensis Li et al. 2013, Antarcticimonas flava Yang et al. 2009 and Hoppeia youngheungensis Kwon et al. 2014

Hameed

Shahina

Lai

et al. 2015

International Journal of Systematic and Evolutionary Microbiology

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A Gram-staining-negative, strictly aerobic, yellowish-orange, flexirubin-positive, rod-shaped, nonflagellated, non-spore-forming and non-gliding marine bacterium, designated strain CC-PY-50 T , was isolated from estuarine water off Pingtung, Taiwan. The strain produced zeaxanthin as a major carotenoid pigment, and showed highest pairwise 16S rRNA gene sequence similarity to Bizionia hallyeonensis T-y7 T (93.9 %) followed by Corallibacter vietnamensis KMM 6217 T (93.8 %), Geojedonia litorea YCS-16 T (93.7 %) and other members of the family Flavobacteriaceae (,93.7 %). Strain CC-PY-50 T established a distinct phyletic lineage associated with Mangrovimonas yunxiaonensis LYYY01 T (93.1 % sequence similarity) with poor bootstrap support during neighbour-joining and maximum-likelihood phylogenetic analyses (37 % for each). The polar lipid profile of strain CC-PY-50 T was determined to accommodate large numbers of unknown lipids including major amounts of three unidentified aminolipids and two unidentified lipids, and moderate amounts of an unidentified phospholipid, an unidentified glycolipid and an unidentified lipid. In addition, phosphatidylethanolamine was also detected in significant amounts. The major (.5 % of total) fatty acids were iso-C 15 : 0 , iso-C 15 : 1 G, iso-C 17 : 0 3-OH, C 16 : 0 and C 16 : 1 v6c and/or C 16 : 1 v7c. The DNA G+C content was 37.1 mol% and menaquinone-6 (MK-6) was the sole respiratory quinone. Based on the phylogenetic evidence and several distinguishing phenotypic and chemotaxonomic features, strain CC-PY-50 T is proposed to represent a novel genus and species of the family Flavobacteriaceae, for which the name Hanstruepera neustonica gen. nov., sp. nov. is proposed. The type strain of the type species Hanstruepera neustonica gen. nov., sp. nov. is CC-PY-50 T (5JCM 19743 T 5BCRC 80747 T). Emended descriptions of the species Sediminibacter furfurosus, Mangrovimonas yunxiaonensis, Antarcticimonas flava and Hoppeia youngheungensis are also proposed. The family Flavobacteriaceae, affiliated to the phylum Bacteroidetes (formerly the Cytophaga-Flavobacterium-Bacteroides or Cytophaga-Flexibacter-Bacteroides group) (Garrity & Holt, 2001), was established, the name validly published and the description emended by Jooste (1985), Reichenbach (1992) and Bernardet et al.

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“…Other biofilms have been found living on frozen glaciers. In 2009, a glacier sample collection in the Antarctic coast revealed the presence of a seawater biofilm composed of a novel bacterial species, Antarcticimonas flava . Other than these very hot and cold environments, biofilms can also be observed in extreme acidic environments, characterized by a high metal content and lack of nutrients.…”

Section: Introductionmentioning

confidence: 99%

Bacterial biofilm: structure, function, and antimicrobial resistance

Dufour¹,

Leung²,

Lévesque³

2010

Endodontic Topics

240

113

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Biofilms are microbial communities attached to surfaces and encased in an extracellular matrix of microbial origin. They represent the predominant form of microbial life. Biofilms are everywhere and can develop on virtually every natural and man-made surface. Biofilms are also ubiquitous in both normal and pathogenic human processes. Biofilm formation has been demonstrated for numerous pathogens and is clearly one of the main strategies for bacterial survival in a variety of sites within the human body. In almost all instances, the biofilm lifestyle helps bacteria survive and persist within the environment. This review discusses the fundamental biology of microbial biofilm and how biofilms impact the pathogenesis of human infections. The different mechanisms involved in the reduced antimicrobial susceptibility of microorganisms in pathogenic biofilms are discussed in detail in this review. Possible approaches that could be explored in the search for new anti-biofilm strategies to eradicate medically relevant biofilms are also presented.

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Antarcticimonas flava gen. nov., sp. nov., isolated from Antarctic coastal seawater

Cited by 17 publications

References 41 publications

UV-Protective Compounds in Marine Organisms from the Southern Ocean

UV-Protective Compounds in Marine Organisms from the Southern Ocean

Bacterial biofilm: structure, function, and antimicrobial resistance

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