Phylogenomics and taxon-rich phylogenies of new and historical specimens shed light on the systematics of Hypnea (Cystocloniaceae, Rhodophyta)
Phylogenomics and taxon-rich phylogenies of new and historical specimens shed light on the systematics of Hypnea (Cystocloniaceae, Rhodophyta)
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DOI：
10.1016/j.ympev.2023.107752
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发表时间：
2023-03-27
影响因子：
4.1
通讯作者：
Oliveira，Mariana Cabral
中科院分区：
文献类型：
--
作者：
de Jesus，Priscila Barreto;Lyra，Goia de Mattos;Oliveira，Mariana Cabral
Cystocloniacum是红藻门的一个高度多样化的科，包括具有生态和经济重要性的物种，其进化史在很大程度上尚未解决。物种划分尚不清楚，特别是在最speciose属，Hypnea，和神秘的多样性已被最近的分子评估，特别是在热带地区。在这里，我们进行了Cystocloniaceae的第一次基因组调查，集中在属Hypnea，从叶绿体和线粒体基因组推断，包括从新的和历史的集合中采样的类群。在这项工作中，分子synapomorphies（基因丢失，InDels和基因倒位）被确定为更好地表征我们的一致性细胞器的进化枝。我们还提出了基于质体和线粒体标记的丰富的分类群。分子和形态学的比较，历史收藏与当代标本揭示了必要的分类更新，在Hypnea，synsynsyndromization的H。marchantiae为H. cervicornis和3个新种：H.大卫矛十一月，H.贾米莱海峡nov.和H. evaristoaesp. Nov.
Cystocloniacae is a highly diverse family of Rhodophyta, including species of ecological and economic importance, whose phylogeny remains largely unresolved. Species delimitation is unclear, particularly in the most speciose genus,Hypnea, and cryptic diversity has been revealed by recent molecular assessments, especially in the tropics. Here, we carried out the first phylogenomic investigation of Cystocloniaceae, focused on the genusHypnea, inferred from chloroplast and mitochondrial genomes including taxa sampled from new and historical collections. In this work, molecular synapomorphies (gene losses, InDels and gene inversions) were identified to better characterize clades in our congruent organellar phylogenies. We also present taxon-rich phylogenies based on plastid and mitochondrial markers. Molecular and morphological comparisons of historic collections with contemporary specimens revealed the need for taxonomic updates inHypnea, the synonymization ofH. marchantiaeto a later heterotypic synonym ofH. cervicornisand the description of three new species:H. davisianasp. nov.,H. djamilaesp. nov. andH. evaristoaesp. nov.