Discovery of Wilsonosiphonia fujiae (Rhodomelaceae, Rhodophyta) from the Maldives Islands and transfer of Polysiphonia rhizoidea from Hawai'i to Wilsonosiphonia

Autor(es)

Boo, Ga Hun ^[1] ; Cho, Tae Oh ^[2] ; Sherwood, Alison R. ^[3] ; Boo, Sung Min ^[4] ; Fujii, Mutue Toyota ^[1]

Afiliação do(s) autor(es)

^[1] Inst Bot, Nucleus Res Phycol, Av Miguel Estefano 3687, BR-04301902 Sao Paulo - Brazil

^[2] Chosun Univ, Dept Life Sci, 309 Pilmun Daero, Gwangju 61452 - South Korea

^[3] Univ Hawaii Manoa, Sch Life Sci, 3190 Maile Way, Honolulu, HI 96822 - USA

^[4] Chungnam Natl Univ, Dept Biol Sci, Daejeon 34134 - South Korea

• Tipo de documento: Artigo Científico
• Fonte: PHYTOTAXA; v. 451, n. 1, p. 63-72, JUL 1 2020.
• Citações Web of Science: 0

Resumo

Wilsonosiphonia is a newly described marine algal genus with three species. The genus was previously confused with the widely distributed taxon Polysiphonia, and because of this, the taxonomy and distribution of Wilsonosiphonia is likely underestimated. We report the discovery of a minute filamentous red alga, Wilsonosiphonia fujiae (Rhodophyta) in the Maldives Islands. a taxon which was considered endemic to Brazil. Specimens were collected at Fulhadoo, Goidhoo Atoll and Dhidhdhoo Islands, South Ari Atoll, which are ca. 160 kin apart, during January and July, 2019, respectively. Thalli formed dense patches on the upper intertidal in regions of shaded rock. Both mitochondrial coxl and plastid rbcL sequencing confirmed the occurrence of W. fujiae in the Maldives, which is also in agreement with morphological observations. Based on the low pairwise divergences of COI-5P and rbcL sequences between the Maldives and Brazil specimens, we suggest that W fujiae is a recently introduced yet ayptogenic species in the Maldives. Additionally, as a result of our phylogenetic analyses, it became evident that sequences from the Hawaiian Islands, which were listed as members of the genus Polysiphonia, represent species-level diversity within the genus Wilsonosiphonia. Based on both morphological characteristics and the COI-5P phylogeny, we here reinstate Polysiphonia rhizoidea from Hawaii and transfer it to Wilsonosiphonia, as W. rhizoidea comb. nov. (AU)

• Processo FAPESP: 19/16956-2 - Caracterização e certificação dos espécimes tipos das coleções científicas de macroalgas marinhas da costa brasileira por meio de barcoding multigênico
• Beneficiário: Gahun Boo
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 16/50370-7 - Resgate histórico dos holótipos das macroalgas da costa brasileira e etiqueta molecular dos topótipos
• Beneficiário: Mutue Toyota Fujii
• Modalidade de apoio: Auxílio à Pesquisa - Regular