1887

Abstract

Five novel Gram-reaction-negative aerobic marine bacterial strains with DNA G+C contents <50 mol% were isolated from the seagrass . 16S rRNA sequence analysis indicated that they belonged to the genus . Major fatty acid compositions, comprising C 3-OH, C, Cω7 and Cω7, supported the affiliation of these strains to the genus . Strains IVIA-Po-14b, IVIA-Po-145 and IVIA-Po-155 were closely related to 46-16, according to phylogenetic analysis. However, DNA–DNA hybridization values <35 % among these strains revealed that they represented different species. Further differences in the phenotypes and minor fatty acid compositions were also found among the strains. Another two strains, designated IVIA-Po-181 and IVIA-Po-159, were found to be closely related to DSW10-10 but DNA–DNA relatedness levels <40 % in pairwise comparisons, as well as some additional differences in phenotypes and fatty acid compositions supported the creation of two novel species. Accordingly, strains IVIA-Po-14b( = CECT 7730  = NCIMB 14671), IVIA-Po-145 ( = CECT 7377  = NCIMB 14431), IVIA-Po-155 ( = CECT 7731  = NCIMB 14672), IVIA-Po-181 ( = CECT 7376  = NCIMB 14433) and IVIA-Po-159 ( = CECT 7732  = NCIMB 14673) represent novel species, for which the names sp. nov., sp. nov., sp. nov., sp. nov. and sp. nov. are proposed, respectively.

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2011-09-01
2019-10-20
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