1887

Abstract

A psychrotrophic strain, GP3, was isolated from Adélie penguin guano from Antarctica and characterized. The 16S rRNA gene sequence of the novel strain showed the highest similarity (97.8 %) with that of B7. The novel strain showed a morphological change from rod to coccus. The growth temperature range of strain GP3 was 0–25 °C, with optimal growth at 20 °C. The strain grew over a salinity range of between 0 and 3 % (w/v) NaCl and the optimal pH for growth was pH 6–8. Strain GP3 contained anteiso-C as the major fatty acid. The major menaquinone was MK-9(H). The cell-wall peptidoglycan type was of the A3 variant. The DNA G+C content of strain GP3 was 58.5 mol%. Strain GP3 was able to hydrolyse chitin, Tween 80, starch, cellulose and lactose, but not gelatin, lecithin or urea. In addition to these physiological characteristics, DNA–DNA hybridization studies clearly differentiated strain GP3 from . The combined results of phylogenetic, physiological and chemotaxonomic studies indicated that strain GP3 represents a novel species of the genus . The name sp. nov. (type strain GP3=JCM 13874=CGMCC 1.6355) is proposed in recognition of the strain's strong chitin-utilizing ability.

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2009-11-01
2019-10-14
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