Taxonomic revision of the Peyssonneliales (Rhodophyta): Circumscribing the authentic Peyssonnelia clade and proposing four new genera and seven new species

Autor(es)

dos Santos Pestana, Edilene Maria ^{[1, 2]} ; de Castro Nunes, Jose Marcos ^[2] ; Cassano, Valeria ^[3] ; Lyra, Goia de Mattos ^[4]

Afiliação do(s) autor(es)

^[1] Univ Estadual Feira de Santana, Programa Posgrad Bot PPGBot, Dept Ciencias Biol, BR-44036900 Feira De Santana, BA - Brazil

^[2] Univ Fed Bahia, Lab Algas Marinhas LAMAR, Inst Biol, Rua Barao de Jeremoabo, BR-40170115 Salvador, BA - Brazil

^[3] Univ Sao Paulo, Inst Biociencias, Dept Bot, BR-05508090 Sao Paulo - Brazil

^[4] Univ Fed Bahia, Programa Posgrad Biodiversidade & Evolucao PPGBio, Inst Biol, Rua Barao de Jeremoabo, BR-40170115 Salvador, BA - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF PHYCOLOGY; v. 57, n. 6 OCT 2021.
• Citações Web of Science: 0

Resumo

The Peyssonneliaceae represents the only family in the order Peyssonneliales, a clade of red encrusting algae distributed worldwide, including 136 species in eleven currently accepted genera. Delineation of genera in the Peyssonneliaceae has mostly been based on vegetative characteristics. Previous molecular phylogenies have shown that some traditionally circumscribed genera are not monophyletic and relationships among them are uncertain. We contribute to the knowledge of the evolutionary history of this clade, presenting a robust rbcL phylogeny that provides new insights on the origin and diversification of the Peyssonneliales. Based on a broad dataset and morphological analyses, we propose a revised taxonomic scheme for the Peyssonneliales resolved as monophyletic with well-supported main lineages. Our results show that Peyssonnelia is polyphyletic, and, therefore, we propose three new genera, Agissea, Olokunia, and Rhodowynnea to accommodate species currently assigned to Peyssonnelia, but distantly related to the clade with the type species of the genus. Additionally, barcoding techniques and analyzed criteria for specific delimitation supported the establishment of one new genus, Brasilophycus, and seven new species, from northeastern Brazil: Agissea amadoi, A. densissima, A. taberniforma, A. villatlantica, A. yemonjasagbae, Brasilophycus similis, and B. roseomarginatus. Our integrative taxonomic approach reveals underestimated diversity of Brazilian Peyssonneliales. Investment in broader sampling along the Brazilian coast and other tropical areas may reveal that its marine biodiversity can be expanded, enlightening our knowledge about this ecologically important group of red algae. (AU)

• Processo FAPESP: 18/06085-1 - Diversidade e filogenia do complexo Laurencia (Rhodophyta) no Oceano Atlântico tropical e subtropical
• Beneficiário: Valéria Cassano
• Modalidade de apoio: Auxílio à Pesquisa - Regular