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一种蚜虫内共生菌——布赫纳氏菌中的多胺组成及与多胺生物合成相关基因的表达

Polyamine composition and expression of genes related to polyamine biosynthesis in an aphid endosymbiont, Buchnera.

作者信息

Nakabachi A, Ishikawa H

机构信息

Department of Biological Sciences, Graduate School of Sciences University of Tokyo, Hongo, Japan.

出版信息

Appl Environ Microbiol. 2000 Aug;66(8):3305-9. doi: 10.1128/AEM.66.8.3305-3309.2000.

DOI:10.1128/AEM.66.8.3305-3309.2000
PMID:10919785
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC92149/
Abstract

Polyamine composition in an aphid endosymbiotic bacterium, Buchnera sp., was determined by high-performance liquid chromatographic analysis. We found that Buchnera contained virtually only a single polyamine, spermidine. The spermidine content of Buchnera was considerably higher in young aphids and tended to decrease with the age of the host. Expression of speD and speE, whose gene products are key enzymes in the synthesis of spermidine, was analyzed by real-time quantitative reverse transcription-PCR. It was shown that the levels of their mRNAs fluctuated in line with the spermidine content.

摘要

通过高效液相色谱分析确定了一种蚜虫内共生细菌——布赫纳氏菌（Buchnera sp.）中的多胺组成。我们发现布赫纳氏菌实际上只含有一种多胺，即亚精胺。在幼龄蚜虫中，布赫纳氏菌的亚精胺含量相当高，并且往往会随着宿主年龄的增长而降低。通过实时定量逆转录PCR分析了speD和speE的表达，其基因产物是亚精胺合成中的关键酶。结果表明，它们的mRNA水平与亚精胺含量一致波动。