title: Marinagarivorans algicolagen. nov., sp. nov., isolated from marine algae.
abstract: Two novel agar-degrading, Gram-stain-negative, motile, heterotrophic, facultatively anaerobic and pale yellow-pigmented bacterial strains, designated Z1Tand JL1, were isolated from marine algaeGelidium amansii(Lamouroux) andGracilaria verrucosa, respectively. Growth of the isolates was optimal at 28-30 °C, pH 7.0-7.5 and with 2-3 % (w/v) NaCl. Both strains contained Q-8 as the sole respiratory quinone. The major cellular fatty acids in strain Z1Twere C18 : 1ω7c, C16 : 0and summed feature 3 (C16 : 1ω7cand/or iso-C15 : 02-OH). The predominant polar lipids in strain Z1Twere phosphatidylethanolamine, phosphatidylglycerol and an aminolipid. The genomic DNA G+C content of both strains was 45.1 mol%. Strains Z1Tand JL1 were closely related, with 99.9 % 16S rRNA gene sequence similarity. The average nucleotide identity (ANI) value between strains Z1Tand JL1 was 99.3 %. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strains Z1Tand JL1 form a distinct phyletic line within the classGammaproteobacteria, with less than 92.3 % similarity to their closest relatives. Based on data from the current polyphasic study, the isolates are proposed to belong to a novel species of a new genus designatedMarinagarivorans algicolagen. nov., sp. nov. The type strain of the type species is Z1T( = ATCC BAA-2617T= CICC 10859T).
authors.affiliation: College of Marine Science, Shandong University at Weihai, Weihai 264209, PR China.
authors.forename: Ling-Yun
authors.initials: LY
authors.lastname: Guo
authors.affiliation: College of Marine Science, Shandong University at Weihai, Weihai 264209, PR China.
authors.forename: Dong-Qi
authors.initials: DQ
authors.lastname: Li
authors.affiliation: College of Marine Science, Shandong University at Weihai, Weihai 264209, PR China.
authors.forename: Jin
authors.initials: J
authors.lastname: Sang
authors.affiliation: College of Marine Science, Shandong University at Weihai, Weihai 264209, PR China.|State key Laboratory of Microbial Technology, Shandong University, Jinan 250100, PR China.
authors.forename: Guan-Jun
authors.initials: GJ
authors.lastname: Chen
authors.affiliation: State key Laboratory of Microbial Technology, Shandong University, Jinan 250100, PR China.|College of Marine Science, Shandong University at Weihai, Weihai 264209, PR China.
authors.forename: Zong-Jun
authors.initials: ZJ
authors.lastname: Du