Centro de Ciências Naturais e Humanas, Universidade Federal do ABC (CCNH - UFABC), Rua Arcturus 03, São Bernardo do Campo, São Paulo, 09606-070, Brazil; Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão 277, São Paulo, São Paulo, 05508-090, Brazil.
Programa de Pós-Graduação em Biodiversidade e Evolução, Instituto de Biologia, Universidade Federal da Bahia, Rua Barão de Jeremoabo, s/n, Salvador, Bahia, 40170-115, Brasil; Department of Organismic and Evolutionary Biology, Harvard University Herbaria, 22 Divinity Avenue, Cambridge Massachusetts 02138, USA; Laboratório de Algas Marinhas, Instituto de Biologia, Universidade Federal da Bahia, Rua Barão de Jeremoabo, s/n, Salvador Bahia 40170-115, Brasil.
Mol Phylogenet Evol. 2023 Jun;183:107752. doi: 10.1016/j.ympev.2023.107752. Epub 2023 Mar 7.
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 genus Hypnea, 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 in Hypnea, the synonymization of H. marchantiae to a later heterotypic synonym of H. cervicornis and the description of three new species: H. davisiana sp. nov., H. djamilae sp. nov. and H. evaristoae sp. nov.
珊瑚藻科是红藻门中一个高度多样化的科，包括具有生态和经济重要性的物种，但其系统发育仍未得到充分解决。物种的划分不明确，特别是在物种最丰富的属 Hypnea 中，最近的分子评估揭示了隐生多样性，尤其是在热带地区。在这里，我们首次对珊瑚藻科进行了系统基因组学研究，重点是 Hypnea 属，该研究基于叶绿体和线粒体基因组推断，包括从新收集和历史收集的分类群样本。在这项工作中，我们确定了分子的共衍征（基因缺失、插入和基因倒位），以更好地描述我们一致的细胞器系统发育中的进化枝。我们还提供了基于质体和线粒体标记的分类群丰富的系统发育。对历史收藏和当代标本的分子和形态学比较揭示了 Hypnea 中需要进行分类学更新，将 H. marchantiae 归并为 H. cervicornis 的后同型异名，并描述了三个新物种：H. davisiana sp. nov.，H. djamilae sp. nov. 和 H. evaristoae sp. nov.
