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<p><i>Silene</i> (Caryophyllaceae) is one of the most diversified genera in North Africa with approximately 144 species recognized by the current taxonomy, of which around one third are endemic to the region. We inferred gene trees from DNA sequences from the nuclear ITS region and the plastid <i>rps</i>16 intron, and a species tree was constructed under the multi-species coalescent (MSC) model. We generated 130 new ITS and 70 <i>rps</i>16 sequences covering the diversity of North African <i>Silene</i> and combined these with those available for <i>Silene</i> on GenBank. We found good agreement with the recently presented phylogeny-aware infrageneric taxonomy of <i>Silene</i>. Most North African taxa belong to a broadly circumscribed <i>S.</i> sect. <i>Silene</i> clade. We complemented the sections <i>Siphonomorpha</i>, <i>Muscipula</i>, <i>Behenantha</i> with 11 North African taxa previously not sequenced. The recently suggested phylogenetic circumscription of sect. <i>Silene</i> was corroborated, including North African representatives previously assigned to sections <i>Atocion</i>, <i>Dipterospermae</i>, <i>Fruticulosae, Nicaeenses</i>, <i>Scorpioides, Silene</i>, and <i>Succulentae</i>. None of these, as circumscribed in North African taxonomic literature, are supported as monophyletic at the subsectional level. <i>Silene nocturna</i> forms two separate clades, which are difficult to distinguish morphologically and require further study of the infraspecific names and heterotypic synonyms. A similar case is observed in <i>S. pomelii</i>, from which <i>S. tagadirtensi</i>s should be recognized.</p>

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A phylogenetic study of the genus Silene in North Africa

  • 期刊论文

  • 发表日期：

    2026年6月19日

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  • Melilia Mesbah,
  • Ntwai A. Moiloa,
  • Llorenç Sáez,
  • Javier López-Alvarado,
  • Gianluigi Bacchetta,
  • Ridha El Mokni,
  • Lorenzo Peruzzi,
  • Farid Bekdouche,
  • Errol Véla,
  • Mohamed Sahnoune,
  • Bengt Oxelman

摘要

Silene (Caryophyllaceae) is one of the most diversified genera in North Africa with approximately 144 species recognized by the current taxonomy, of which around one third are endemic to the region. We inferred gene trees from DNA sequences from the nuclear ITS region and the plastid rps16 intron, and a species tree was constructed under the multi-species coalescent (MSC) model. We generated 130 new ITS and 70 rps16 sequences covering the diversity of North African Silene and combined these with those available for Silene on GenBank. We found good agreement with the recently presented phylogeny-aware infrageneric taxonomy of Silene. Most North African taxa belong to a broadly circumscribed S. sect. Silene clade. We complemented the sections Siphonomorpha, Muscipula, Behenantha with 11 North African taxa previously not sequenced. The recently suggested phylogenetic circumscription of sect. Silene was corroborated, including North African representatives previously assigned to sections Atocion, Dipterospermae, Fruticulosae, Nicaeenses, Scorpioides, Silene, and Succulentae. None of these, as circumscribed in North African taxonomic literature, are supported as monophyletic at the subsectional level. Silene nocturna forms two separate clades, which are difficult to distinguish morphologically and require further study of the infraspecific names and heterotypic synonyms. A similar case is observed in S. pomelii, from which S. tagadirtensis should be recognized.