Mitochondrial evolution in the entomopathogenic fungal genus Beauveria
Mitochondrial evolution in the entomopathogenic fungal genus Beauveria
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DOI：
10.1002/arch.21754
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发表时间：
2020-10-30
影响因子：
2.2
通讯作者：
Cox, Murray
中科院分区：
文献类型：
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作者：
Glare, Travis;Campbell, Matt;Cox, Murray
白僵菌属真菌是无脊椎动物的病原体，通常用作生物农药的活性剂。经过几十年的几个物种描述，最近的分子分类方法已经导致超过25个物种现在划定。很少有人注意到白僵菌的线粒体基因组，但更好的理解可能会导致深入了解物种的性质和进化在这个重要的属。在这项研究中，我们的线粒体基因组测序的四个新菌株属于球孢白僵菌，喀里多尼亚白僵菌和马拉维白僵菌，并比较它们与现有的线粒体序列的相关真菌。白僵菌属的线粒体基因组的范围广泛，从28，806到44，135个碱基对，内含子插入占大多数大小变异，高达39%（B. malawiensis）的线粒体长度，由于基因中的内含子。普通线粒体基因的基因顺序没有变化之间的白僵菌序列，但观察到的转移核糖核酸基因的数量的变化。尽管使用整个线粒体基因组的系统发育分析显示，不出意外，B。在线粒体密码子使用上，推测部分菌株的B.与B相似。malawiensis和B.比其他的B。分析了白僵菌分离物。
Species in the fungal genus Beauveria are pathogens of invertebrates and have been commonly used as the active agent in biopesticides. After many decades with few species described, recent molecular approaches to classification have led to over 25 species now delimited. Little attention has been given to the mitochondrial genomes of Beauveria but better understanding may led to insights into the nature of species and evolution in this important genus. In this study, we sequenced the mitochondrial genomes of four new strains belonging to Beauveria bassiana, Beauveria caledonica and Beauveria malawiensis, and compared them to existing mitochondrial sequences of related fungi. The mitochondrial genomes of Beauveria ranged widely from 28,806 to 44,135 base pairs, with intron insertions accounting for most size variation and up to 39% (B. malawiensis) of the mitochondrial length due to introns in genes. Gene order of the common mitochondrial genes did not vary among the Beauveria sequences, but variation was observed in the number of transfer ribonucleic acid genes. Although phylogenetic analysis using whole mitochondrial genomes showed, unsurprisingly, that B. bassiana isolates were the most closely related to each other, mitochondrial codon usage suggested that some B. bassiana isolates were more similar to B. malawiensis and B. caledonica than the other B. bassiana isolates analyzed.