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<p>Stephanodiscaceae is one of the most diverse family of the freshwater centric diatoms. However, the scarcity of whole plastome data poses a significant challenge to the undertaking of genomic studies on this taxonomic group. We collected data on the plastid genomes from 33 members of the Stephanodiscaceae and its close relatives, including 12 newly-sequenced genomes and 21 deposited in National Center for Biotechnology Information (NCBI). Phylogenetic trees are yielded five major clades based on homologous genes. The features of the plastid genomes, including repeat sequences, codon usage, and selection pressure for each clade, are analyzed. The paper makes a contribution to the field of diatom genomics by describing the structural characteristics of the plastid genomes in the Stephanodiscaceae and its closely related species, complemented by related analyses. It provides crucial data that will serve as indispensable references for future research.</p>

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New insights into the phylogeny of Stephanodiscaceae based on plastome

  • 期刊论文

  • 发表日期：

    2025年6月21日

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  • Yandan Xiang,
  • Xudong Liu,
  • Fangru Nan,
  • Yang Liu,
  • Shulian Xie,
  • Xinjie Jin,
  • John Patrick Kociolek,
  • Qi Liu

摘要

Stephanodiscaceae is one of the most diverse family of the freshwater centric diatoms. However, the scarcity of whole plastome data poses a significant challenge to the undertaking of genomic studies on this taxonomic group. We collected data on the plastid genomes from 33 members of the Stephanodiscaceae and its close relatives, including 12 newly-sequenced genomes and 21 deposited in National Center for Biotechnology Information (NCBI). Phylogenetic trees are yielded five major clades based on homologous genes. The features of the plastid genomes, including repeat sequences, codon usage, and selection pressure for each clade, are analyzed. The paper makes a contribution to the field of diatom genomics by describing the structural characteristics of the plastid genomes in the Stephanodiscaceae and its closely related species, complemented by related analyses. It provides crucial data that will serve as indispensable references for future research.