The complete mitochondrial genome and novel gene arrangement of the unique-headed bug Stenopirates sp. (Hemiptera: Enicocephalidae).
The complete mitochondrial genome and novel gene arrangement of the unique-headed bug Stenopirates sp. (Hemiptera: Enicocephalidae).
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DOI：
10.1371/journal.pone.0029419
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发表时间：
2012
期刊：
影响因子：
3.7
通讯作者：
Cai W
中科院分区：
文献类型：
--
作者：
Li H;Liu H;Shi A;Stys P;Zhou X;Cai W
许多真正的错误是重要的害虫栽培作物，有些是重要的人类疾病的载体，但很少有分支系统学分析，解决了7个下异翅目之间的关系。Enicocephalomorpha和Nepomorpha被认为是异翅亚目的基底类群，但最基底的谱系尚未解决。在这里，我们报告的线粒体基因组的独特的头部错误Stenopirates sp。第一个从Enicocephalomorpha测序的线粒体基因组。狭海盗线粒体基因组是一个典型的环状DNA分子，长15，384 bp，包含37个基因和一个大的非编码片段。基因顺序与其他已知的昆虫线粒体基因组有很大的不同，tRNA基因和蛋白质编码基因都发生了重排。在所有已知的异翅目昆虫线粒体基因组中，狭翅目昆虫的总AT含量（82.5%）最高。链偏差与其他真正的错误与负GC-偏斜和正AT-偏斜的J-链是一致的。异翅目线粒体atp 8的进化速率最高，而cox 1的进化速率最低。此外，核苷酸替换的变化与每个蛋白质编码基因的GC含量之间观察到负相关。一个微卫星被确定在假定的控制区。最后，系统发育重建表明，Enicocephalomorpha是姐妹组的所有剩余的异翅目。
Many of true bugs are important insect pests to cultivated crops and some are important vectors of human diseases, but few cladistic analyses have addressed relationships among the seven infraorders of Heteroptera. The Enicocephalomorpha and Nepomorpha are consider the basal groups of Heteroptera, but the basal-most lineage remains unresolved. Here we report the mitochondrial genome of the unique-headed bug Stenopirates sp., the first mitochondrial genome sequenced from Enicocephalomorpha. The Stenopirates sp. mitochondrial genome is a typical circular DNA molecule of 15, 384 bp in length, and contains 37 genes and a large non-coding fragment. The gene order differs substantially from other known insect mitochondrial genomes, with rearrangements of both tRNA genes and protein-coding genes. The overall AT content (82.5%) of Stenopirates sp. is the highest among all the known heteropteran mitochondrial genomes. The strand bias is consistent with other true bugs with negative GC-skew and positive AT-skew for the J-strand. The heteropteran mitochondrial atp8 exhibits the highest evolutionary rate, whereas cox1 appears to have the lowest rate. Furthermore, a negative correlation was observed between the variation of nucleotide substitutions and the GC content of each protein-coding gene. A microsatellite was identified in the putative control region. Finally, phylogenetic reconstruction suggests that Enicocephalomorpha is the sister group to all the remaining Heteroptera.
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影响因子：
2.6
作者：
Dotson, EM;Beard, CB
通讯作者：
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Hassanin, A;Léger, N;Deutsch, J
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