Banca de DEFESA: DÉBORA CHRISTINA ZUANNY MARTINS DA SILVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : DÉBORA CHRISTINA ZUANNY MARTINS DA SILVA
DATE: 27/01/2023
TIME: 09:00
LOCAL: INSTITUTO DE BIOLOGIA (ONLINE)
TITLE:

Megadiverse genera in Leguminosae: taxonomic advances and global distribution

KEY WORDS:

big genera; Fabaceae; Sistematics; Biogeography; taxonomy

PAGES: 60
BIG AREA: Ciências Biológicas
AREA: Botânica
SUMMARY:

Big genera, also known as megadiverse genera, are generally defined as those with more
than 500 accepted species. The size of many of these big genera has changed significantly through (i) the
description of new species; (ii) division of non-monophyletic genera; (iii) grouping or lumping of genera into a
broader concept. The current number of large genera is unknown, and the most recent size estimates of these
genera are significantly out of date. Therefore, we developed an R-language package to mine Kew's taxonomically
verified global database Plants of the World Online (POWO) to provide an up-to-date list of megadiverse
Leguminosae genera and summarize: (i) the current number of species; (ii) taxonomic history of major changes in
the number of species recognized in each genus; (iii) the mechanisms behind changes in the size of genera from
molecular phylogenetic advances in recent decades; and (iv) provide genera distribution maps in different
countries and botanical regions of the world, as a first step to identify possible patterns and determinants of the
global distribution of megadiverse legumes. We found that the major genera in the Leguminosae family are 

Astragalus, Acacia, Crotalaria, Indigofera, Lupinus, Mimosa and Oxytropis, and not all of them are globally
distributed in the tropical region. Additionally, we found that the greatest changes in the size of these big genera
are due to taxonomic changes over the years.

COMMITTEE MEMBERS:
Externa à Instituição - SARA RIBEIRO MORTARA
Externo à Instituição - HAROLDO CAVALCANTE DE LIMA
Interno - 2133310 - DOMINGOS BENICIO OLIVEIRA SILVA CARDOSO