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Diversification of megadiverse genera in the Neotropical Region: systematics and evolution of Baccharis L. and Mikania Willd. (Asteraceae)

Grant number: 11/18385-0
Support type:Regular Research Grants
Duration: December 01, 2011 - May 31, 2014
Field of knowledge:Biological Sciences - Botany
Principal Investigator:José Rubens Pirani
Grantee:José Rubens Pirani
Home Institution: Instituto de Biociências (IB). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

Asteraceae is a cosmopolitan family of flowering plants showing higher diversity in grasslands, savannas and montane forests. This project aims to study two of its largest genera, Baccharis L., with about 400 species, occurs in grasslands, savannas and upper montane forests, while Mikania Willd., comprising about 450 species, predominates in forests, but is also present in open vegetations. The impressing diversity of Baccharis and Mikania, of which around 90% of the species occur in the Neotropics, make possible to investigate the diversification of Asteraceae in forest, grass and savanna ecosystems. The project aims to study the systematics and evolution of Baccharis and Mikania, proposing hypothesis to explain the diversification of these genera, towards a better understanding of the shifts of grassland/forest environments and of the floristic connections among forests, savannas and grasslands in South America. To achieve the goals, the proposed activities comprise the study of herbaria specimens, field work, morphological description and molecular characterization, by the means of nrDNA and cpDNA markers, and phylogenetic analysis, based on morphological and molecular data, considered isolated or combined. The project involves the selection of informative morphological characters to the phylogenetic analysis; the adjustment of protocols for DNA extraction and amplification, and the screening of molecular markers potentially informative to the reconstruction of the phylogeny investigated genera. We aim to obtain phylogenetic hypothesis to the evolution of Baccharis and Mikania, to apply the phylogenies regarding to the improvement of the infrageneric classification systems of these genera, and to propose evolutionary hypothesis to the evolution of morphological, biological and autoecological characters, contributing to the study of the patterns of diversification of Asteraceae in South America. (AU)

Articles published in Agência FAPESP Newsletter about the research grant
FAPESP gathering discusses the scientific importance of the largest family of plants  

Scientific publications (9)
(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)
HEIDEN, GUSTAVO; PIRANI, JOSE RUBENS. Novelties towards a phylogenetic infrageneric classification of Baccharis (Asteraceae, Astereae). PHYTOTAXA, v. 289, n. 3, p. 285-290, DEC 29 2016. Web of Science Citations: 3.
OLIVEIRA, CAETANO TRONCOSO; NAKAJIMA, JIMI NAOKI; PIRANI, JOSE RUBENS. A new species of Mikania (Eupatorieae, Asteraceae) from the southwestern Minas Gerais, Brazil. PHYTOTAXA, v. 243, n. 3, p. 291-296, JAN 14 2016. Web of Science Citations: 0.
HEIDEN, GUSTAVO; PIRANI, JOSE RUBENS. Taxonomy of Baccharis subgen. Tarchonanthoides (Asteraceae: Astereae: Baccharidinae), a group from the southeastern South American grasslands and savann. PHYTOTAXA, v. 241, n. 1, p. 1-70, JAN 6 2016. Web of Science Citations: 1.
HEIDEN, GUSTAVO; PIRANI, JOSE RUBENS. Baccharis nebularis Asteraceae, Astereae): a new species of B. subgen. Tarchonanthoides sect. Curitybenses from the mountains of Southern Brazil. PHYTOTAXA, v. 177, n. 2, p. 125-130, AUG 27 2014. Web of Science Citations: 2.
HEIDEN, GUSTAVO; PIRANI, JOSE RUBENS. Two new species of Baccharis subgen. Baccharis (Asteraceae, Astereae) with single-flowered female capitula from the Serra do Cipo, Minas Gerais, Brazil. PHYTOTAXA, v. 164, n. 2, p. 141-148, APR 4 2014. Web of Science Citations: 2.
HEIDEN, GUSTAVO; LEONI, LUCIO DE SOUZA; NAKAJIMA, JIMI NAOKI. Baccharis magnifica (Asteraceae, Astereae): a striking new species endemic to the summits of Serra do Caparao, southeastern Brazil. PHYTOTAXA, v. 162, n. 4, p. 211-216, MAR 17 2014. Web of Science Citations: 5.
HEIDEN, GUSTAVO; PIRANI, JOSE RUBENS. Baccharis napaea (Asteraceae, Astereae): a new species of subgen. Tarchonanthoides sect. Coridifoliae from the subtropical highlands of southern Brazil. PHYTOTAXA, v. 66, p. 49-54, SEP 21 2012. Web of Science Citations: 2.
HEIDEN, GUSTAVO; PIRANI, JOSE RUBENS. A synopsis and notes for Baccharis subgen. Tarchonanthoides (Asteraceae: Astereae). PHYTOTAXA, v. 60, p. 41-49, JUL 19 2012. Web of Science Citations: 5.
HEIDEN, GUSTAVO; RIBAS, OSMAR DOS SANTOS. Baccharis umbellata (Asteraceae, Astereae): a new species endemic to the highest summits of Parana, Southern Brazil. PHYTOTAXA, v. 49, p. 23-28, MAR 21 2012. Web of Science Citations: 2.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.