Banca de QUALIFICAÇÃO: MAYARA PASTORE

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : MAYARA PASTORE
DATE: 29/09/2021
TIME: 14:00
LOCAL: Atividade a ser desenvolvida remotamente. Link para acesso: https://meet.google.com/top-ztnv-myb
TITLE:

"Systematic and Biogeography of Maripeae (Convolvulaceae): a predominantly Amazonian tribe"

KEY WORDS:

Amazon, phylogeny, lianas, Solanales, taxonomy.

PAGES: 63
BIG AREA: Ciências Biológicas
AREA: Botânica
SUMMARY:

The tribe Maripeae Webb. & Berth. belongs to Convolvulaceae Juss. the Ipomoea batatas (L.) Lam. (sweet potato) and morning glory family. The tribe is represented by lianas from the tropical America forests, predominantly in the Amazonian lowlands, in addition to some species found in southern Mexico, Central America or Cerrado in Brazil. Includes the genera Dicranostyles Benth., Lysiostyles Benth e Maripa Aubl, currently with 36 recognized species. The species of the tribe are mainly characterized by woody stems, which can reach great heights and diameters, showy inflorescences with white, pink or purple corolla flowers, indehiscent fruits with woody pericarp and persistent sepals. The genera Dicranostyles, Lysiostyles and Maripa were traditionally recognized in the tribe Erycibeae, however phylogenetic studies of Convolvulaceae indicated the polyphyletic in this group and segregated these three genera to the reestablished tribe Maripeae, considered monophyletic with currently known molecular data. This project aims to carry out a taxonomic review, as well the phylogeny and the biogeography focusing the tribe Maripeae, in order to document and to analyze its diversity, geographic distribution, evolutionary relationships and contribute to its conservation. A taxonomic treatment for the group was carried out 50 years ago, therefore updates to the taxonomic revision are needed. Phylogenetic studies based on molecular and morphological characters will elucidate the evolutionary relationships between the species and monophyly of Maripeae, as well as contributing to advances in the phylogeny of Convolvulaceae. The biogeographic results may indicate the probable area of origin of the genus and which biogeographical processes led to the current distribution of these species. The development of this study includes the examination of specimens deposited in the main herbaria with Amazonian collections, fieldwork and botanical collections in the Amazon, phylogenetic analyses based on plastid and nuclear markers, biogeographic analyses considering possible ancestral areas and diversification patterns, as well assessment of the conservation status of the species studied. With the results of this project, at least four manuscripts will be submitted to international journals, including the discovery of new species, synonymizations, typifications, and unprecedented results in the elucidation of evolutionary relationships and biogeographic history in Convolvulaceae through a peculiar group of Amazonian lianas. With the delimitation of these taxa, better understanding regarding its distribution and occurrence environments, will grant the possibility assess the degree of threat to these species, contributing to the global plant conservation strategy.

BANKING MEMBERS:
Externa à Instituição - ANA RITA GIRALDES SIMÕES
Externo à Instituição - LEANDRO LACERDA GIACOMIN - UFOPA
Interno - 252.687.258-82 - ANDRÉ OLMOS SIMÕES - UNICAMP
Presidente - 048.467.306-89 - PEDRO LAGE VIANA - MPEG