1887

Abstract

Eight unidentified fish pathogens and 10 strains received as ,” and were compared with the type strains of all previously described species in the genera and and with seven species by determining levels of deoxyribonucleic acid (DNA) relatedness (S1 nuclease method) and by performing phenotypic tests. The name sp. nov. is revived for a DNA relatedness group comprising eight strains that are 75 to 100% related to strain TG 39/87 and 0 to 8% related to all of the other species studied. These strains produce flat rhizoid colonies which adhere to agar, show strong gliding movement, absorb Congo red, reduce nitrate to nitrite, and produce HS. The guanine-plus-cytosine content of the DNA is 32 mol%. The type strain is strain NCMB 2248 (= ATCC 23463). The name sp. nov. is revived for a DNA relatedness group comprising seven strains that are 90 to 100% related to strain NCMB 1947 (T = type strain) and 0 to 5% related to all of the other species studied. These strains produce circular, convex colonies that have regular or spreading margins and do not adhere to agar, show very slow gliding movement, do not absorb Congo red, do not reduce nitrate, and do not produce HS. The guanine-plus-cytosine content of the DNA is 33 mol%. The type strain is strain NCMB 1947. Both and produce the flexirubin type of pigments, are strongly proteolytic, and do not hydrolyze (or produce acid from) any carbohydrate. (three strains) was shown to constitute a DNA relatedness group that is 0 to 8% related to all of the other species tested. Furthermore, this organism can be differentiated by phenotypic tests. The presence of in Europe is shown for the first time.

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/content/journal/ijsem/10.1099/00207713-39-3-346
1989-07-01
2019-12-11
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http://instance.metastore.ingenta.com/content/journal/ijsem/10.1099/00207713-39-3-346
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