College of Plant Protection, Nanjing Agricultural University, Nanjing, Jiangsu 210095, PR China.
College of Plant Protection, Nanjing Agricultural University, Nanjing, Jiangsu 210095, PR China.
Genomics. 2020 Jan;112(1):289-296. doi: 10.1016/j.ygeno.2019.02.008. Epub 2019 Feb 18.
Oxya is a genus of grasshoppers (Orthoptera: Acridoidea) attacking rice and other gramineous plants in Africa and Asia. In the present study, we characterized complete mitochondrial genomes (mitogenomes) of three species, Oxya japonica japonica (15,427 bp), Oxya hainanensis (15,443 bp) and Oxya agavisa robusta (15,552 bp) collected from China. The three mitogenomes contained a typical gene set of metazoan mitogenomes and shared the same gene order with other Acridid grasshoppers, including the rearrangement of tRNA and tRNA. Analyses of pairwise genetic distances showed that ATP8 was the least conserved gene, while COI the most conserved. To determine the position of Oxya grasshoppers in the phylogeny of Acrididae, we reconstructed phylogenetic trees among 64 species from across 11 subfamilies using nucleotide sequences of mitogenomes. While the tree confirms traditional classifications of Acrididae at major higher-levels, it suggests a few modifications for classifications at lower-levels.
Oxya 是一种在非洲和亚洲攻击水稻和其他禾本科植物的蝗虫属（直翅目：蝗总科）。在本研究中，我们对三种来自中国的蝗虫（Oxya japonica japonica（15,427bp）、Oxya hainanensis（15,443bp）和 Oxya agavisa robusta（15,552bp））的完整线粒体基因组（mitogenome）进行了特征描述。这三个线粒体基因组包含了动物线粒体基因组的典型基因集，并与其他蝗总科的昆虫具有相同的基因顺序，包括 tRNA 和 tRNA 的重排。对成对遗传距离的分析表明，ATP8 是最不保守的基因，而 COI 是最保守的基因。为了确定 Oxya 蝗虫在蝗总科系统发育中的位置，我们使用来自 11 个亚科的 64 个物种的线粒体基因组核苷酸序列构建了系统发育树。虽然该树在主要的高级水平上证实了蝗总科的传统分类，但它表明在较低的水平上需要对分类进行一些修改。
