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Diversity and phylogeny of the Laurencia complex (Rhodophyta) in the tropical and subtropical Atlantic Ocean

Grant number: 18/06085-1
Support type:Regular Research Grants
Duration: July 01, 2018 - June 30, 2020
Field of knowledge:Biological Sciences - Botany - Plant Taxonomy
Principal researcher:Valéria Cassano
Grantee:Valéria Cassano
Home Institution: Instituto de Biociências (IB). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Assoc. researchers: Claudia Maria Ligia Collado Vides ; Mariana Cabral de Oliveira ; Mutue Toyota Fujii

Abstract

The Laurencia complex has been shown to be highly diverse in number of genera and species, currently comprising eight genera: Laurencia s.s., Osmundea, Chondrophycus, Palisada, Yuzurua, Laurenciella, Coronaphycus and Ohelopapa. Most of its representatives show high phenotypic plasticity, making difficult to identify genera and species based only on morphological characters leading to identification errors, misapplied names and constant nomenclatural changes. Molecular studies have generated important proposals of generic and specific circumscriptions. However, phylogenetic relationships between genera and species are not well resolved with the use of only one molecular marker. However, intergeneric and interspecific phylogenetic relationships are not well resolved using only one molecular marker. The present project aims to continue the study of the diversity and phylogenetic relationships of the Laurencia complex (Rhodomelaceae, Rhodophyta) in the tropical and subtropical Atlantic Ocean. In this context, the project proposes the use of the DNA Barcoding technique for species delimitation, and the use of multi-gene markers for phylogenetic purposes, aiming to generate a more robust phylogeny for this complex. The study of the Laurencia complex in the Atlantic has been developed in partnership with Mexico, Spain (Canary Islands), Portugal (Azores Archipelago and Madeira Island), USA (Florida) and Venezuela. In this next phase of the project, we will expand the area of study for Costa Rica and give greater coverage to the Gulf of Mexico. This international cooperation is fundamental to the understanding of the Laurencia complex in the Atlantic Ocean, as well as its geographical distribution and phylogenetic affinities. (AU)

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Scientific publications (7)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DOS SANTOS PESTANA, EDILENE MARIA; DE CASTRO NUNES, JOSE MARCOS; CASSANO, VALERIA; LYRA, GOIA DE MATTOS. Taxonomic revision of the Peyssonneliales (Rhodophyta): Circumscribing the authentic Peyssonnelia clade and proposing four new genera and seven new species. JOURNAL OF PHYCOLOGY, OCT 2021. Web of Science Citations: 0.
MARTINS, NUNO TAVARES; GURGEL, CARLOS FREDERICO D.; SPOKES, TRACEY M.; CASSANO, VALERIA. Colpomenia species from south and south-eastern Australia (Ectocarpales, Phaeophyceae): a DNA barcoding approach. AUSTRALIAN SYSTEMATIC BOTANY, OCT 2021. Web of Science Citations: 0.
MARTINS, NUNO T.; GURGEL, CARLOS FREDERICO D.; SPOKES, TRACEY M.; CASSANO, VALERIA. First record of Mikrosyphar zosterae (Chordariaceae, Phaeophyceae) in the southern hemisphere and as an endophyte in the brown algal genera Leathesia and Colpomenia. PHYTOTAXA, v. 497, n. 2, p. 113-126, APR 20 2021. Web of Science Citations: 0.
CASSANO, VALERIA; SOARES, LUANDA P.; ESTHER VERA-VEGAS, BEATRIZ; ARDITO, SONIA; GOMEZ, SANTIAGO; SENTIES, ABEL; FUJII, MUTUE T. CHONDROPHYCUS ANABELIAE AND LAURENCIA DIGITATA (CERAMIALES, RHODOPHYTA) ARE RECORDED FOR THE FIRST TIME FOR VENEZUELA EXPANDING THEIR GEOGRAPHIC DISTRIBUTIONS BEYOND THE TYPE LOCALITIES. BOTANICAL SCIENCES, v. 98, n. 4, p. 624-643, OCT-DEC 2020. Web of Science Citations: 0.
SENTIES, ABEL; DRECKMANN, KURT M.; HERNANDEZ, OSCAR E.; NUNEZ RESENDIZ, MARIA L.; LE GALL, LINE; CASSANO, VALERIA. Diversity and distribution of Laurencia sensu stricto (Rhodomelaceae, Rhodophyta) from the Mexican Pacific, including L. mutueae sp. nov.. PHYCOLOGICAL RESEARCH, v. 67, n. 4, p. 267-278, OCT 2019. Web of Science Citations: 0.
BIBI, RABIA; CASSANO, VALERIA; MEDEIROS, ROSANGELA DA SILVA; RASHID, SHAHNAZ; RASHEED, MUNAWWER. Morphological and molecular systematic investigation of Laurencia karachiana sp. nov. (Ceramiales, Rhodophyta) from Karachi, Pakistan. PHYTOTAXA, v. 404, n. 1, p. 23-40, MAY 16 2019. Web of Science Citations: 0.
CASSANO, VALERIA; SANTOS, GABRIEL DO NASCIMENTO; DOS SANTOS PESTANA, EDILENE MARIA; DE CASTRO NUNES, JOSE MARCOS; OLIVEIRA, MARIANA C.; FUJII, MUTUE T. Laurencia longiramea sp. nov. for Brazil and an emendation of the generic delineation of Corynecladia (Ceramiales, Rhodophyta). PHYCOLOGIA, v. 58, n. 2, p. 115-127, 2019. Web of Science Citations: 3.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.