Scholarship 14/00803-9 - Iridaceae, Ontogenia - BV FAPESP
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Patterns of floral evolution in Trimezieae (Iridaceae)

Grant number: 14/00803-9
Support Opportunities:Scholarships abroad - Research Internship - Post-doctor
Start date until: August 01, 2014
End date until: July 31, 2015
Field of knowledge:Biological Sciences - Botany - Plant Taxonomy
Principal Investigator:Renato de Mello-Silva
Grantee:Juliana Lovo
Supervisor: Paula J. Rudall
Host Institution: Instituto de Biociências (IB). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Institution abroad: Royal Botanic Gardens, Kew, England  
Associated to the scholarship:12/18396-5 - Patterns of floral evolution in Trimezieae (Iridaceae), BP.PD

Abstract

Iridaceae are a morphologically distinctive yet highly diverse family of monocotyledons. In particular, the flowers vary greatly in size, shape, and ornamentation. Floral diversity has traditionally been an important source of taxonomic characters. Within the tribe Trimezieae style and stigma morphology is especially diverse. These structures have therefore been used, usually in association with characters such as tepal shape and ornamentation, as taxonomic markers. However, the homology of the various character states has never been investigated and recent molecular phylogenetic analyses have shown that these characters display high levels of homoplasy. Detailed studies aimed at understanding evolutionary patterns and the value of these characters for systematic studies are needed. The main goals of this study are to determine the character states that support key clades within the tribe and to better understand patterns of floral evolution in Trimezieae. This will be achieved by examining ontogeny of floral structures and associating characters to the phylogenetic history of the group. Additional taxa and molecular characters will be added to an existing phylogeny for Trimezieae in order to provide the framework for these studies. The diversity and relatively restricted distribution of Trimezieae, a Neotropical group whose distribution is centred on Brazil, makes it particularly suited to this kind of approach. (AU)

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Scientific publications
(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)
LOVO, JULIANA; ALCANTARA, SUZANA; VASCONCELOS, THAIS N. C.; SAJO, MARIA DAS GRACAS; RUDALL, PAULA J.; PRENNER, GERHARD; AGUIAR, ANTONIO J. C.; MELLO-SILVA, RENATO. Evolutionary lability in floral ontogeny affects pollination biology in Trimezieae. AMERICAN JOURNAL OF BOTANY, v. 108, n. 5, p. 828-843, . (18/02191-1, 14/00803-9, 12/18396-5, 14/09131-3)
LOVO, JULIANA; WINKWORTH, RICHARD C.; BRAGANCA GIL, ANDRE DOS SANTOS; AMARAL, MARIA DO CARMO E.; BITTRICH, VOLKER; MELLO-SILVA, RENATO. A revised genus-level taxonomy for Trimezieae (Iridaceae) based on expanded molecular and morphological analyses. Taxon, v. 67, n. 3, p. 503-520, . (14/00803-9, 14/09131-3)

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