Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/72559

Title

Pseudoalteromonas issachenkonii sp. nov., a bacterium that degrades the thallus of the brown alga Fucus evanescens

Author(s)

Ivanova, Elena P.;  Sawabe, Tomoo;  Alexeeva, Yuliya V.;  Lysenko, Anatolii M.;  Gorshkova, Nataliya M.;  Hayashi, Karin;  Zukova, Natalia V.;  Christen, Richard;  Mikhailov, Valery V.

Abstract

Eleven non-pigmented strains of Gram-negative, aerobic, marine bacteria with polar flagella were isolated from the thallus of the brown alga Fucus evanescens collected in the Kraternaya Bight of the Kurile Islands in the Pacific Ocean. These organisms were conspecific and exhibited high levels of genetic relatedness (up to 91%). The G+C contents of the DNAs of these strains were 42.9--43.3 mol%. These halophilic bacteria had bacteriolytic, proteolytic and haemolytic activities and degraded algal polysaccharides, synthesizing a number of glycoside hydrolases (fucoidanases, laminaranases, alginases, agarases, pullulanases, beta-glucosidases, beta-galactosidases, beta-N-acetylglucosaminidases and beta-xylosidases). By 16S rDNA analysis, the bacteria were shown to belong to the genus Pseudoalteromonas, a member of the gamma-subclass of the Proteobacteria. DNA from the strains isolated from the brown alga showed 27--54% genetic relatedness with respect to DNAs of other type strains of the genus Pseudoalteromonas. The phenotypic characteristics, together with the genetic evidence, indicate that this group of epiphytic bacteria represents a distinct species, Pseudoalteromonas issachenkonii sp. nov., for which the type strain is KMM 3549(T) (=LMG 19697(T)=CIP 106858(T)).

Publication type

Journal article

Source

International Journal of Systematic and Evolutionary Microbiology, Vol. 52, no. 1 (Jan 2002), pp. 229-234

Publication year

2002

Keyword(s)

Marine bacteria;  Proteobacteria;  Pseudoalteromonas issachenkonii

Publisher

Society for General Microbiology

ISSN

1466-5026

Publisher URL

http://ijs.sgmjournals.org/content/vol52/issue1/

Copyright

Copyright © 2002 IUMS.

Peer reviewed