A5003700143- Plant and animal studies
- Plant Diversity and Evolution
- Plant Taxonomy and Phylogenetics
- Plant Parasitism and Resistance
- Genetic diversity and population structure
- Fern and Epiphyte Biology
- Ecology and Vegetation Dynamics Studies
- Chromosomal and Genetic Variations
- Essential Oils and Antimicrobial Activity
- Plant and Fungal Species Descriptions
- Botany, Ecology, and Taxonomy Studies
- Botanical Research and Applications
- Sesquiterpenes and Asteraceae Studies
- Genomics and Phylogenetic Studies
- Phytochemistry and Biological Activities
- Insect and Pesticide Research
- Natural product bioactivities and synthesis
- Plant and fungal interactions
- Soil Management and Crop Yield
- Natural Compound Pharmacology Studies
- Insect and Arachnid Ecology and Behavior
- RNA modifications and cancer
- Seed Germination and Physiology
- Ethnobotanical and Medicinal Plants Studies
- Sugarcane Cultivation and Processing
Universidade Federal do Rio Grande do Sul
2014-2024
University of Rio Grande and Rio Grande Community College
2023
Universidade Federal do Pampa
2019
Université Paris-Saclay
1998
Institut des Sciences des Plantes de Paris Saclay
1997
Iridaceae are one of the largest families Lilianae and probably also among best studied monocotyledons. To further evaluate generic, tribal, subfamilial relationships we have produced four plastid DNA data sets for 57 genera plus outgroups: rps4, rbcL (both protein-coding genes), trnL intron, trnL-F intergenic spacer. All matrices produce similar although not identical trees, thus analyzed them in a combined analysis, which highly resolved well-supported topology, spite fact that partition...
Passiflora, a genus with more than 400 species, exhibits high diversity of floral and vegetative structures complex taxonomy, which includes 23 subgenera many sections series. To better understand Passiflora's variability interspecific relationships, the phylogeny 61 classified in 11 suggested subgenera, was investigated. Three molecular markers were used, nuclear ribosomal internal transcribed spacers (nrITS), plastid trnL-trnF spacer regions (∼1000 bp), rps4 gene (∼570 bp). major clades...
Oil-producing flowers related to oil-bee pollination are a major innovation in Neotropical and Mexican Iridaceae. In this study, phylogenetic relationships were investigated among wide array of New World genera the tribes Sisyrinchieae, Trimezieae Tigridieae (Iridaceae: Iridoideae) evolution floral glandular structures, which predominantly trichomal elaiophores, was examined relation diversification Phylogenetic analyses based on seven molecular markers obtained from 97 species conducted...
Chloroplast genomes are frequently treated as highly conserved among plants. However, many lineages of vascular plants have experienced structural rearrangements, including inversions and modifications to the size content genes. Cacti one these lineages, containing smallest plastome known for an obligately photosynthetic angiosperm, loss copy inverted repeat ndh gene suite, but only a few cacti from subfamily Cactoideae been characterized. Here, we investigated variation sequences across...
Sisyrinchium (Iridaceae: Iridoideae: Sisyrinchieae) is one of the largest, most widespread and taxonomically complex genera in Iridaceae, with all species except native to American continent. Phylogenetic relationships within genus were investigated evolution oil-producing structures related specialized oil-bee pollination examined. analyses based on eight molecular markers obtained from 101 accessions representing 85 conducted first extensive phylogenetic analysis genus. Total evidence...
• Premise of the study: Polyploidy and reticulate evolution are often a complication for discovering phylogenetic relationships between genera species. Despite huge economic importance sugarcane ( Saccharum officinarum —Poaceae, Andropogoneae), limits genus its species complex largely unresolved, involving both polyploidy evolution. This study aimed to assess s.l ., including Erianthus Tripidium , as well investigate taxonomic circumscription South American genus. Methods: Molecular cloning...
Sequences of the internal transcribed spacers (ITSs) 18S-26S nuclear ribosomal DNA were used to resolve phylogenetic relationships and chromosomal evolution among 14 species genus Hypochaeris (Asteraceae). Parsimony analysis was performed for reconstruction, sequence divergence between estimated. Pairwise within ranged from 0% 25.68% in ITS1 17.08% ITS2. A highly resolved strict-consensus tree obtained that showed phylogenetically useful information ITS sequences Hypochaeris. Four clades...
The taxonomic delimitation of Vriesea is challenging because several diagnostic traits the genus are shared with other genera in Tillandsioideae. has no unique morphological features that distinguish it from taxa. Earlier phylogenetic studies suggested a polyphyletic status this genus, but taxon sampling was limited, and tests congruence for characters have not yet been performed. Here we used total evidence approach more comprehensive Brazilian to help circumscribe s.s. (the lineage...
Sisyrinchium micranthum is native to southern Brazil and shows a wide range of morphological variation in this region. This study was performed compare individuals species terms traits such as morphology, chromosome number, meiotic behaviour, pollen viability genetic diversity using inter simple sequence repeat markers. First, general aspects were evaluated plants classified into three categories (CI, CII CIII) analyse the cytogenetic data. Three numbers corresponding ploidies found: 2n = 2x...
Abstract To conserve threatened species effectively, it is crucial to map the genetic variation of remaining populations. Thus, using 15 microsatellites markers, from which 10 were specially developed for this study, we investigated structure and gene flow patterns Herbertia zebrina Deble, a critically endangered endemic grasslands southern Brazil. We also degree habitat fragmentation impacts on levels diversity, mating system pollinators species. STRUCTURE discriminant analysis principal...
With the present work, we aim to provide a better understanding of chromosome evolutionary trends among southern Brazilian species Iridoideae. Chromosome numbers and genome sizes were determined for 21 22 belonging eight genera Tigridieae two Trimezieae, respectively. The nine five are reported here first time. Analyses meiotic behaviour, tetrad normality pollen viability in 14 revealed regular meiosis high indexes (> 90%). data obtained compiled from literature plotted onto phylogenetic...
Sisyrinchium micranthum Cav. is a member of the family Iridaceae, which distributed over American continent. In Brazil, this species found, not only in disturbed areas and coastal regions, but also very common urban centers, such as public parks, during spring. Chromosome counts for North specimens are 2n = 32 48, whereas southern there polyploidy series with three chromosome numbers, 16, 32, 48. Population analyses using DNA molecular markers inexistent species, spite its wide distribution...
KM, https://orcid.org/0000-0002-7658-0844; JK, https://orcid.org/0000-0002-9983-7630; CAM, https://orcid.org/0000-0001-5984-3238; EMdA, https://orcid.org/0000-0001-8033-5334; LIFA, https://orcid.org/0000-0002-4182-911X; TVA, https://orcid.org/0000-0003-3661-0719; FB, https://orcid.org/0000-0002-5710-7170; KB, https://orcid.org/0000-0002-0767-9226; LC, https://orcid.org/0000-0002-2105-9859; FEC, https://orcid.org/0000-0002-6473-3129; JMPC, https://orcid.org/0000-0001-9833-0822; MC,...
Plants of the family Iridaceae are well represented in grassland vegetation southern Brazil, occurring Pampa and Atlantic Forest biomes. Nevertheless, little is known about taxonomy evolution species Brazil. The main goal this review to compile published information South American Iridaceae, discuss genetic diversity presenting our own research data light literature. focus on genera Calydorea, Cypella, Herbertia, Sisyrinchium. Aspects reproductive system pollinator attraction also discussed.
A molecular phylogeny is used to analyze the diversification history of Adesmia ser. psoraleoides, and its implications for understanding historical assembly grasslands in highlands southern Brazil. All species A. psoraleoides were sampled, including multiple accessions each species, plus representative rest covering geographic distribution. Phylogenetic analyses based on nuclear plastid DNA sequences, a matK was dated. well-supported monophyletic group, nested within series bicolores,...
The aim of the present work was to clarify origin and phylogenetic position species belonging genus Ilex (Aquifoliaceae), especially South American species. Phylogenetic relationships were investigated using plastid psbA-trnH intergenic spacer parsimony Bayesian analyses. shown evolve slowly within Ilex, but a major gap in this region useful study genus. To obtain more potentially parsimonious characters, atpB-rbcL data combined with those for psbA-trnH. Many gaps Ilex. topology trees showed...
Abstract The inter‐generic relationships within the subfamily Mutisioideae (Asteraceae/Compositae) are historically uncertain. Most of genera that once were recognized s.l. now segregated into a number different tribes and subfamilies. In particular, generic delimitations Gerbera‐Complex, an informal group inside tribe Mutisieae s.str., have been widely discussed. species generally herbs with monocephalous scapes grouped in eight genera: Amblysperma, Chaptalia, Gerbera, Leibnitzia, Lulia,...