Abstract
The project proposes the survey of the diversity and phylogeny of groups of economic and ecological importance of marine red macroalgae (Rhodophyta), but in which taxonomic issues still persist. The groups addressed are the Corallinophycidae, Halymeniales, Gracilariales and gender Hypnea (Gigartinales), including species with economic potential (e.g. production of hydrocolloids), but with recurring problems for species identification, such as phenotypic plasticity, morphological convergence, need of reproductive structures to identify, among others. Therefore, those are groups in which the use of molecular markers has proven vital to understanding the diversity of species, geographical distribution and phylogenetic affinities. DNA barcodes will be used to analyze hundreds of samples collected extensively on the coast of Brazil and, in some cases, samples from abroad, to better understand the species diversity, distribution and their biogeographic affinities. With this initial screening, the number of species and their geographical distribution will be accessed, followed by morphological analysis and selection of representatives (covering their extremes of geographical distribution) for more detailed studies of phylogeny. Morphological analysis will benefit using this approach, since usually a part of the samples (often the majority) is non-fertile, which makes their identification, in many cases, impossible. With the clusters indicating which samples belong to the same taxon, it is possible to collect and analyze samples at different stages of the life cycle, fertile or not, often growing under broad environmental conditions, which allows a much more complete understanding of the morphology and its variation. (AU)
Scientific publications
(15)
(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)
DE JESUS, PRISCILA BARRETO;
NAUER, FABIO;
LYRA, GOIA DE MATTOS;
DE ARAUJO, VALTER LOUREIRO;
SANTOS DE CARVALHO, IGOR ARAUJO;
DE CASTRO NUNES, JOSE MARCOS;
CASSANO, VALERIA;
OLIVEIRA, MARIANA CABRAL;
SCHNADELBACH, ALESSANDRA SELBACH.
Phylogenetic relationships within the genus Hypnea (Cystocloniaceae, Rhodophyta): convergent evolution and its implications in the infrageneric classification.
Botanica Marina,
v. 62,
n. 6,
p. 563-575,
DEC 2019.
Web of Science Citations: 0.
NAUER, FABIO;
DELUQUI GURGEL, CARLOS FREDERICO;
AYRES-OSTROCK, LIGIA MARIA;
PLASTINO, ESTELA MARIA;
OLIVEIRA, MARIANA CABRAL.
Phylogeography of the Hypnea musciformis species complex (Gigartinales, Rhodophyta) with the recognition of cryptic species in the western Atlantic Ocean.
JOURNAL OF PHYCOLOGY,
v. 55,
n. 3,
p. 676-687,
JUN 2019.
Web of Science Citations: 1.
NAUER, FABIO;
AYRES-OSTROCK, LIGIA;
AMORIM, ANA MARIA;
SANTOS, JANAINA PIRES;
CHOW, FUNGYI;
PLASTINO, ESTELA M.;
OLIVEIRA, MARIANA C.
Life history, growth, and pigment content of two morphological variants of Hypnea pseudomusciformis (Gigartinales, Rhodophyta).
JOURNAL OF APPLIED PHYCOLOGY,
v. 31,
n. 2,
p. 1271-1284,
APR 2019.
Web of Science Citations: 2.
IHA, CINTIA;
GRASSA, CHRISTOPHER J.;
LYRA, GOIA DE M.;
DAVIS, CHARLES C.;
VERBRUGGEN, HEROEN;
OLIVEIRA, MARIANA C.
Organellar genomics: a useful tool to study evolutionary relationships and molecular evolution in Gracilariaceae (Rhodophyta).
JOURNAL OF PHYCOLOGY,
v. 54,
n. 6,
p. 775-787,
DEC 2018.
Web of Science Citations: 4.
JAMAS, MAYRA;
IHA, CINTIA;
OLIVEIRA, MARIANA C.;
GUIMARAES, SILVIA M. P. B.;
FUJII, MUTUE T.
Morphological and molecular studies on Gelidiaceae and Gelidiellaceae (Gelidiales, Rhodophyta) from Brazil with description of the new species Gelidium calidum.
PHYTOTAXA,
v. 314,
n. 2,
p. 195-218,
JUL 25 2017.
Web of Science Citations: 5.
IHA, CINTIA;
JAMAS, MAYRA;
GUIMARAES, SILVIA M. P. B.;
FUJII, MUTUE T.;
FRESHWATER, D. WILSON;
OLIVEIRA, MARIANA C.
Pterocladiella (Gelidiales, Rhodophyta) species of Brazil including morphological studies of Pterocladiella media and a reassessment of Pterocladiella taylorii.
PHYCOLOGIA,
v. 56,
n. 6,
p. 624-637,
2017.
Web of Science Citations: 4.
LYRA, GOIA DE M.;
GURGEL, CARLOS FREDERICO D.;
COSTA, EMMANUELLE DA S.;
DE JESUS, PRISCILA B.;
OLIVEIRA, MARIANA C.;
OLIVEIRA, EURICO C.;
DAVIS, CHARLES C.;
DE CASTRO NUNES, JOSE MARCOS.
DELIMITATING CRYPTIC SPECIES IN THE GRACILARIA DOMINGENSIS COMPLEX (GRACILARIACEAE, RHODOPHYTA) USING MOLECULAR AND MORPHOLOGICAL DATA.
JOURNAL OF PHYCOLOGY,
v. 52,
n. 6,
p. 997-1017,
DEC 2016.
Web of Science Citations: 9.
DE JESUS, PRISCILA BARRETO;
NAUER, FABIO;
LYRA, GOIA DE MATTOS;
CASSANO, VALERIA;
OLIVEIRA, MARIANA CABRAL;
DE CASTRO NUNES, JOSE MARCOS;
SCHNADELBACH, ALESSANDRA SELBACH.
Species-delimitation and phylogenetic analyses of some cosmopolitan species of Hypnea (Rhodophyta) reveal synonyms and misapplied names to H.cervicornis, including a new species from Brazil.
JOURNAL OF PHYCOLOGY,
v. 52,
n. 5,
p. 774-792,
OCT 2016.
Web of Science Citations: 14.
IHA, CINTIA;
O'SHAUGHNESSY, KATHRYN A.;
GUIMARAES, SILVIA M. P. B.;
OLIVEIRA, MARIANA C.;
FRESHWATER, D. WILSON.
Taxonomic reappraisal of Gelidium coarctatum (Gelidiales, Rhodophyta) and Gelidium lineare sp. nov. from the tropical western Atlantic.
PHYCOLOGIA,
v. 55,
n. 5,
p. 555-563,
2016.
Web of Science Citations: 8.
SISSINI, MARINA N.;
OLIVEIRA, MARIANA C.;
GABRIELSON, PAUL W.;
ROBINSON, NESTOR M.;
OKOLODKOV, YURI B.;
RIOSMENA RODRIGUEZ, RAFAEL;
HORTA, PAULO A.
Mesophyllum erubescens (Corallinales, Rhodophyta)-so many species in one epithet.
PHYTOTAXA,
v. 190,
n. 1, SI,
p. 299-319,
DEC 24 2014.
Web of Science Citations: 25.