Scholarlink

<p>In this study, we addressed the previously unexplored area of comparative mitochondrial genomics with tRNA secondary structures at both intergeneric and interspecific levels between two close gall midge genera in the family Cecidomyiidae: the floral and veggie-versatile <i>Contarinia</i> and the mango-mad <i>Procontarinia</i> belonging to the same tribe Cecidomyiini, which is extremely like a genetic clash of sister groups. We newly sequenced and annotated the complete mitochondrial genomes of Goji white gall midge (<i>Contarinia</i> sp.) and a mango leaf pest (<i>Procontarinia mangicola</i>), characterized their rearrangement features, and investigated their tRNA secondary structures including a mango fruit pest <i>P. fructiculi</i>. Based on this foundation, combining the related data of a worldwide invasive flower and vegetable pest, <i>C. maculipennis</i> by Ma et al. (<CitationRef CitationID="CR23">2025</CitationRef>), the mitogenomes of four gall midge species, every two from the two closely related genera, <i>Contarinia</i> and <i>Procontarinia</i>, were selected and compared with respect to their basic genomic structure, rearrangement patterns, and complete sets of tRNA secondary structures. This analysis revealed, for the first time in the world, the similarities and differences of intergeneric and interspecific mitogenomes in Cecidomyiidae, Cecidomyiinae as well as Cecidomyiini. Furthermore, by integrating the taxonomic information, we reconstructed reasonable phylogenetic trees that collectively illuminated both conserved and distinctive features in mitogenomes across different lineages. The variations in genetic distances and divergence times among these taxa were effectively explained by their respective mitogenomic characteristics. Notably, the association between mitochondrial evolutionary rate and ecological adaptation or host specialization is not a universal evolutionary rule; elevated mitochondrial substitution rates may also result from multiple factors, including population bottlenecks, metabolic constraints, and environmental selection pressures. Therefore, the evolutionary patterns observed in this study are only applicable to the gall midge taxa examined.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A genetic clash of sister groups: first-ever intergeneric and interspecific mitogenome comparisons between two close gall midge genera (Cecidomyiidae: Cecidomyiinae: Cecidomyiini): the floral and veggie-versatile Contarinia and the mango-mad Procontarinia, with phylogenetic applications

  • 期刊论文

  • 发表日期：

    2026年7月29日

查看全文
  • Xiu-Fang Dong,
  • Yi-Fan Zhang,
  • Xu-Yuan Gao,
  • Ning-Bo Ma,
  • Yu Ji,
  • Yan-Fei Li,
  • Yi-Ran Mu,
  • Zheng-Hao Yue,
  • De-Wei Wei,
  • Yong-Hao Yu,
  • Hai-Li Qiao,
  • Wen-Jun Bu,
  • Ke-Long Jiao

摘要

In this study, we addressed the previously unexplored area of comparative mitochondrial genomics with tRNA secondary structures at both intergeneric and interspecific levels between two close gall midge genera in the family Cecidomyiidae: the floral and veggie-versatile Contarinia and the mango-mad Procontarinia belonging to the same tribe Cecidomyiini, which is extremely like a genetic clash of sister groups. We newly sequenced and annotated the complete mitochondrial genomes of Goji white gall midge (Contarinia sp.) and a mango leaf pest (Procontarinia mangicola), characterized their rearrangement features, and investigated their tRNA secondary structures including a mango fruit pest P. fructiculi. Based on this foundation, combining the related data of a worldwide invasive flower and vegetable pest, C. maculipennis by Ma et al. (2025), the mitogenomes of four gall midge species, every two from the two closely related genera, Contarinia and Procontarinia, were selected and compared with respect to their basic genomic structure, rearrangement patterns, and complete sets of tRNA secondary structures. This analysis revealed, for the first time in the world, the similarities and differences of intergeneric and interspecific mitogenomes in Cecidomyiidae, Cecidomyiinae as well as Cecidomyiini. Furthermore, by integrating the taxonomic information, we reconstructed reasonable phylogenetic trees that collectively illuminated both conserved and distinctive features in mitogenomes across different lineages. The variations in genetic distances and divergence times among these taxa were effectively explained by their respective mitogenomic characteristics. Notably, the association between mitochondrial evolutionary rate and ecological adaptation or host specialization is not a universal evolutionary rule; elevated mitochondrial substitution rates may also result from multiple factors, including population bottlenecks, metabolic constraints, and environmental selection pressures. Therefore, the evolutionary patterns observed in this study are only applicable to the gall midge taxa examined.