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不动杆菌的分类学:β-D-木糖苷木水解酶在菌株鉴别中的作用

Taxonomy of Acinetobacter: the usefulness of beta-D-xyloside xylohydrolase for strain differentiation.

作者信息

Hansen W, Schoutens E, Yourassowsky E

出版信息

J Clin Pathol. 1977 Sep;30(9):838-41. doi: 10.1136/jcp.30.9.838.

Abstract

One hundred and twenty-two clinical isolates of Acinetobacter were studied for the presence of beta-galactosidase and of beta-xylosidase, for biochemical characteristics, and for genetic interspecies transformation tests. All strains lacked beta-galactosidase; in contrast, beta-xylosidase was always present in the oxidative strains. This test proved to be of value for separating strains able to form acid from carbohydrates (A. anitratum and A. haemolyticus spp haemolyticus) from the non-oxidative strains (A. lwoffi and A. haemolyticus spp alcaligenes). However, the genetic relationship of all strains tested warrants further study before Acinetobacters are grouped into clearly defined species.

摘要

对122株不动杆菌临床分离株进行了β-半乳糖苷酶和β-木糖苷酶的存在情况、生化特性以及种间遗传转化试验研究。所有菌株均缺乏β-半乳糖苷酶;相反,β-木糖苷酶在氧化型菌株中总是存在。该试验对于区分能够从碳水化合物形成酸的菌株(硝酸盐阴性不动杆菌和溶血不动杆菌溶血亚种)与非氧化型菌株(沃氏不动杆菌和溶血不动杆菌产碱亚种)具有价值。然而,在将不动杆菌归为明确界定的物种之前,所有受试菌株的遗传关系仍需进一步研究。

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