Phylogenetic characterization of sulfur-oxidizing bacterial endosymbionts in three tropical Lucinidae by 16S rDNA sequence analysis
Phylogenetic characterization of sulfur-oxidizing bacterial endosymbionts in three tropical Lucinidae by 16S rDNA sequence analysis
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通过 16S rDNA 序列分析对三种热带萤科硫氧化细菌内共生体进行系统发育表征
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
D. Prieur
中科院分区：
文献类型：
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作者：
P. Durand;O. Gros;L. Frenkiel;D. Prieur
测定了三种热带灵芝类内共生菌的近全16S rDNA序列，并与以前研究过的共生硫代自养细菌进行了比较。这些共生体包括以前分析过的一种Codania orbularis，以及两种新的鳃共生体Langua pensylvanica和Lucina Pectinata。在每个寄主物种的两个分析样本中只检测到一种类型的细菌16S rDNA，表明双壳类物种中的共生菌群体似乎由单一物种组成。所分析的三个共生体序列属于变形杆菌的γ细分，在包含先前研究的来自双壳类超家族的共生硫代自养菌的簇中。这两种来自浅水海草床的双壳类，Codania orbularis和Langua Pensylvanica，似乎被相同的共生细菌定植。然而，生活在富含硫化物的泥质红树林地区的海藻共生体似乎是海鞘藻类的一种深分枝微生物。
Nearly complete 16S rDNA sequences were determined for three tropical Lucinid endosymbionts and compared with previously examined symbiotic thioautotrophs. These symbionts include one previously analyzed, Codakia orbicularis, and two new gill symbionts of Lingua pensylvanica and Lucina pectinata. Only one type of bacterial 16S rDNA was detected in the two analyzed specimens of each host species, showing that the symbiont population within a Bivalve species appears to be composed of a single species. The three symbiont sequences analyzed fall within the γ-subdivision of the Proteobacteria, in the cluster containing previously examined symbiotic thioautotrophs from the bivalve superfamily Lucinacea. The two bivalves from shallow-water sea-grass beds, Codakia orbicularis and Lingua pensylvanica, seem to be colonized by the same symbiotic bacteria. However, the symbiont of Lucina pectinata, which that lives in sulfide-rich muddy mangrove areas, seems to be a deeply branching microorganism of the Lucinacea cluster.