Molecular characteristics of the alpha- and beta-tubulin genes of Nosema philosamiae
文献类型: 外文期刊
第一作者: Zhu, Feng
作者: Zhu, Feng;Shen, Zhongyuan;Xu, Li;Guo, Xijie;Shen, Zhongyuan;Xu, Li;Guo, Xijie
作者机构:
关键词: microsporidia;Nosema group;pairwise distance;phylogeny;sequence similarity
期刊名称:FOLIA PARASITOLOGICA ( 影响因子:2.122; 五年影响因子:1.863 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: Microsporidia are intracellular parasites of insects and other higher eukaryotes. The microsporidian Nosema philosamiae Talukdar, 1961 was isolated from the eri silkworm, Philosamia cynthia ricini Grote. In the present study, alpha- and beta-tubulin genes from N. philosamiae were characterized. The identity analysis of nucleotide and amino acid sequences indicated high similarity with species of Nosema Nageli, 1857 sensu lato (nucleotide sequences, >= 96.0%; amino acid sequences, >= 99.0%). However, the tubulin genes of N. philosamiae share low sequence similarity with that of N. ceranae Fries, Feng, da Silva, Slemenda et Pieniazek, 1996 (strain BRL01) and a Nosemal Vairimorpha species. Phylogenies based on alpha-, beta- and combined alpha- plus beta-tubulin gene sequences showed that N. philosamiae, along with the true Nosema species, forms a separate clade with a high bootstrap value, with N. ceranae BRL01 forming a clade of its own. The results indicated that the alpha- and beta-tubulin sequences may be useful as a diagnostic tool to discriminate the true Nosema group from the Nosemal Vairimorpha group.
分类号: Q18
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