A5062214020- Marine and coastal plant biology
- Marine Biology and Ecology Research
- Algal biology and biofuel production
- Coastal and Marine Management
- Seaweed-derived Bioactive Compounds
- Marine and coastal ecosystems
- Polar Research and Ecology
- Coastal wetland ecosystem dynamics
- Coral and Marine Ecosystems Studies
- Biocrusts and Microbial Ecology
- Aquatic Ecosystems and Phytoplankton Dynamics
- Aquaculture Nutrition and Growth
- Plant and Fungal Species Descriptions
- Soil and Water Nutrient Dynamics
- Marine Bivalve and Aquaculture Studies
- Lichen and fungal ecology
- Bioeconomy and Sustainability Development
- Diatoms and Algae Research
- Environmental and Cultural Studies in Latin America and Beyond
- Genetic diversity and population structure
- Plant Pathogens and Fungal Diseases
- Isotope Analysis in Ecology
- Echinoderm biology and ecology
- Light effects on plants
- Marine and fisheries research
Universidade de São Paulo
2015-2024
Instituto de Botânica
2007-2024
Universidade Brasil
1999-2008
As the effects of Global Climate Changes on costal regions Central and South Americas advance, there is proportionally little research being made to understand such impacts. This commentary puts forward a series propositions strategies improve performance American science policy making in order cope with future impacts their coastal habitats.
Gracilaria species are the main source of agar worldwide. Since laboratory cultivation is an important means sustaining such production, this study aimed to assess influence two fundamental strategies physiological algae adjustment, photoacclimation and photomorphogenesis, on G. birdiae physiology. Specifically, effects different spectral light qualities reproduction, growth, pigment content in distinct photoperiods (8 14 hours) were examined. Tetrasporophytes gametophytes submitted...
Populations of the marine benthic red macroalgae Hypnea musciformis and pseudomusciformis along Atlantic Pacific Oceans were tested for phylogeographic structure using DNA barcode COI-5P combined with rbcL construction phylogenetic tree. Strong patterns genetic detected across 210 sequences, 37 haplotypes found, multiple statistical approaches. was found in Northeast Northwest Atlantic, Mediterrean Sea, Namibia, coast Mexico. Two new putative species detected, sp. 1 Caribbean Sea 2 Dominican...
Macroalgal (seaweed) genomic resources are generally lacking as compared with other eukaryotic taxa, and this is particularly true in the red algae (Rhodophyta). Understanding algal genomes critical to understanding evolution given that genes spread across lineages from secondary endosymbiosis diverged early Archaeplastids. The Gracilariales a highly diverse widely distributed order including species can serve ecosystem engineers intertidal habitats several notorious introduced species....
Gracilaria sp. é uma das principais macroalgas marinhas atualmente coletadas para produção de ágar no Brasil. Este trabalho objetivou comparar o crescimento in vitro diferentes estádios reprodutivos tanto linhagens selvagens (vermelhas), quanto variante cromática (verde clara) sp., em dois meios cultura: Von Stosch e Provasoli. Seis foram selecionadas: gametófitos femininos (F) masculinos (M), vermelhos (vm) verde claros (vc); tetrasporófitos vermelhos, porém derivados cruzamentos distintos,...
Abstract Short-term variations of mycosporine-like amino acids (MAAs) in Pyropia columbina (Montage) W.A. Nelson exposed to nitrate (NO 3 - ) enrichment under different outdoor light treatments during the spring ozone depletion 2008 Punta Arenas (Chile) were investigated. Segments P. thalli cultivated three solar radiation without or with NO supply (0.38 mmol l -1 ): PAR (P), PAR+UVA (PA), and PAR+UVA+UVB (PAB). Samples taken at 8:00 h (initial value), 9:30, 12:30, 15:30, 18:00 on November 8...
In this study, we explored how past terrestrial and marine climate changes have interacted to shape the phylogeographic patterns of intertidal red seaweed Gracilaria caudata, an economically important species exploited for agar production in Brazilian north-east. Seven sites were sampled along north-east tropical south-east sub-tropical coast. The genetic diversity structure G. caudata was inferred using a combination mitochondrial (COI cox2-3), chloroplast (rbcL) 15 nuclear microsatellite...
SUMMARY Gracilaria birdiae Plastino et E.C. Oliveira is an economically important marine red alga exploited for the production of agar in Brazil. A rare light green strain G. was found a natural population, which raised new questions regarding intraspecific variation. Crosses were performed unialgal cultures to determine mode color inheritance this strain. We determined growth rate and pigment composition compared it wild-type, The stable showed recessive nuclear transmission. had lower...
AbstractAbstractGracilaria birdiae Plastino & E.C. Oliveira sp. nov. is described from tropical Brazilian waters, on the basis of a critical comparison with several putatively related species. The species found coast Ceará State (3°S) to Espírito Santo (20°S). thallus terete throughout, reaching about 40 cm long and 2 mm in diameter; branching subdichotomous, becoming unilateral places; structure pseudoparenchymatous microcystidiate, thick-walled medullary cells interspersed few small cells....
Abstract Based on their distinct physiological characteristics, we postulated that different strains of Gracilaria birdiae (Gracilariales, Rhodophyta) would have performances when grown in the sea. Samples from a northeastern Brazil population, including red (RD-CE), greenish-brown (GB-CE), and green (GR-CE) strains, one strain (RD-ES) southeastern population were cultivated Ubatuba Bay, Brazil. We analyzed survival ability, growth rate, agar yield quality these strains. The rates (GRs)...
The life history, reproduction and impact of fertilization on growth rate Gracilaria domingensis (Kützing) Sonder ex Dickie were studied in vitro . history is the Polysiphonia -type, was completed six months. Carpospores developed into plants which produced tetraspores 60 days. gametophytes originated from released became fertile after 101 days with a sex ratio 1:1. Spermatangia found single deep conceptacles, verrucosa as well confluent ones, henriquesiana -type. Mature cystocarps have...
Gracilaria cornea J. Agardh is an important agarophyte occurring in the western Atlantic Ocean. Green colour individuals of G. were found a natural population, growing next to red individuals, which more common. Due importance strains genetic and intraspecific variability studies, this work aimed characterize green evaluating different nutritional light conditions. Red gametophytes cultivated at 14:10 light: dark cycle, with alternating aeration periods 30 min. Two enriched solutions tested:...
Gracilaria tenuistipitata, a species of commercial interest, is becoming model organism for studies on red algal physiology and molecular biology as it can be grown easily in vitro under broad range conditions. Most the experiments carried out around world have been based tetrasporophytic clone isolated our laboratory from specimen collected China. Here we describe life history this species, give anatomic details reproductive structures, illustrate morphological variability tetraspore...