The complete mitochondrial genome of Cervaphis quercus (Insecta: Hemiptera: Aphididae: Greenideinae)
The complete mitochondrial genome of Cervaphis quercus (Insecta: Hemiptera: Aphididae: Greenideinae)
复制标题
Cervaphis quercus 完整线粒体基因组（昆虫纲：半翅目：蚜科：Greenideinae）
DOI：
10.1111/1744-7917.12112
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发表时间：
2014-06-01
期刊：
影响因子：
4
通讯作者：
Qiao, Ge-Xia
中科院分区：
文献类型：
--
作者：
Wang, Yuan;Huang, Xiao-Lei;Qiao, Ge-Xia
对栎类动物的线粒体基因组进行了测序和注释。基因组全长15 272个核苷酸，编码2个核糖体RNA基因(rrnL和rrns)、22个转移RNA(TRNA)基因、13个蛋白质编码基因和一个控制区。基因组与在推测的祖先昆虫中发现的基因顺序相同。核苷酸组成高度偏向A+T。所有编码蛋白质的基因都使用标准的线粒体起始密码子。栎属的两个核糖体RNA基因的二级结构模型与其他昆虫的二级结构模型相似。除了TRNS(AGN)的二氢尿苷(Dhu)臂形成一个简单的环外，所有的tRNA都具有典型的三叶草叶结构。还讨论了控制区中结构元件的存在，重点是复制和/或转录的可能调节。与其他物种的线粒体基因组比较表明，它们的基因排列是保守的；然而，来自不同亚科的物种的重复区域的多样性表明，它们是独立进化事件的结果。
The mitochondrial genome of Cervaphis quercus has been sequenced and annotated. The entire genome of 15 272 bp encodes two ribosomal RNA genes (rrnL and rrnS), 22 transfer RNA (tRNA) genes, 13 protein-coding genes and a control region. The genome has the same gene order as that found in the inferred ancestral insect. Nucleotide composition is highly A+T biased. All protein-coding genes use standard mitochondrial initiation codons. Secondary structure models of the two ribosomal RNA genes of C. quercus are similar to those proposed for other insects. All tRNAs have the classic clover-leaf structure, except for the dihydrouridine (DHU) arm of trnS (AGN), which forms a simple loop. The presence of structural elements in the control region is also discussed, with an emphasis on the possible regulation of replication and/or transcription. Comparison with mitochondrial genomes of other aphid species shows their gene arrangements are conserved; however, the variety of repeat regions in species from a different aphid subfamily, Aphidinae, suggests that they resulted from independent evolutionary events.