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Main conclusion <p>The first complete plastid genome of the critically endangered species <i>Valeriana trinervis</i> was sequenced, assembled and compared with other published Valeriana plastomes.</p> Abstract <p>In this study, we assembled the plastid genome of the critically endangered, endemic species <i>Valeriana trinervis</i> (= <i>Centranthus trinervis</i>) and compare it with all published plastomes of <i>Valeriana</i>. We found not only differences in the inverted repeats boundaries, in the type and abundance of repeats, but also similarities in codon usage and microsatellite numbers. We detected non-canonical start codons in several genes and identified variation in several regions that could be useful for phylogenetic and phylogeographic studies. The phylogenetic tree inference based on both full plastomes and coding sequence data indicated that <i>V. trinervis</i> is sister to all Eurasian <i>Valeriana</i> accessions confirming the phylogenetic position recently investigated. This is the first plastome available for a species of the Mediterranean clade of <i>Valeriana</i> previously known as <i>Centranthus</i>, and it adds further data to understand the evolution and diversification of this systematically debated genus.</p>

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The plastid genome of the critically endangered Valeriana trinervis (= Centranthus trinervis) and insights from comparison with other Valeriana plastomes (Caprifoliaceae)

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年9月10日

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  • Daniele De Luca,
  • Olga De Castro

摘要

Main conclusion

The first complete plastid genome of the critically endangered species Valeriana trinervis was sequenced, assembled and compared with other published Valeriana plastomes.

Abstract

In this study, we assembled the plastid genome of the critically endangered, endemic species Valeriana trinervis (= Centranthus trinervis) and compare it with all published plastomes of Valeriana. We found not only differences in the inverted repeats boundaries, in the type and abundance of repeats, but also similarities in codon usage and microsatellite numbers. We detected non-canonical start codons in several genes and identified variation in several regions that could be useful for phylogenetic and phylogeographic studies. The phylogenetic tree inference based on both full plastomes and coding sequence data indicated that V. trinervis is sister to all Eurasian Valeriana accessions confirming the phylogenetic position recently investigated. This is the first plastome available for a species of the Mediterranean clade of Valeriana previously known as Centranthus, and it adds further data to understand the evolution and diversification of this systematically debated genus.