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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Pollination systems in Pogonieae (Orchidaceae: Vanilloideae): A hypothesis of evolution among reward and rewardless flowers

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Author(s):
Pansarin, Emerson R. [1] ; Salatino, Antonio [2] ; Pansarin, Ludmila M. [3] ; Sazima, Marlies [4]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Fac Filosofia Ciencias & Letras, Dept Biol, BR-14040901 Ribeirao Preto, SP - Brazil
[2] Univ Sao Paulo, Inst Biociencias, Dept Bot, BR-05422970 Sao Paulo - Brazil
[3] Univ Sao Paulo, Inst Biociencias, Dept Ecol, BR-05508900 Sao Paulo - Brazil
[4] Univ Estadual Campinas, Inst Biol, Dept Biol Vegetal, BR-13083970 Campinas, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: FLORA; v. 207, n. 12, p. 849-861, 2012.
Web of Science Citations: 17
Abstract

The tribe Pogonieae of Vanilloideae (Orchidaceae) consists of six genera, including Pogoniopsis, a mycoheterotrophic taxon with morphological characteristics distinct from the remaining of the tribe. A hypothesis about the phylogeny of the tribe was inferred, involving all currently recognized genera, based on isolated and combined sequence data of 5.8S, 18S and 26S (nrDNA) regions using parsimony and Bayesian analyses. Phylogenetic analyses show that inclusion of Pogoniopsis turns the tribe Pogonieae paraphyletic. All analyses reveal that Pogoniopsis is closely related to members of Epidendroideae. The pantropical Vanilla is monophyletic if Dictyophyllaria is assumed as synonym of Vanilla. Members of Pogonieae are pollinated by several groups of solitary and social bees, two pollination systems being recognized: reward-producing and deceptive. The molecular phylogeny suggests that ancestrals related to Pogonieae gave rise to two evolutionary lines: a tropical one with reward production of flowers, and a predominantly temperate regions invading line with deceptive flowers. Reward-producing flowers characterize the South and Central American clade (=Cleistes), while deceptive pollination is prominent in the clade that includes North American-Asiatic taxa plus the Amazonian genus Duckeella. (C) 2012 Elsevier GmbH. All rights reserved. (AU)

FAPESP's process: 07/07445-7 - Evolution of pollination systems of American Vanilloideae (Orchidaceae)
Grantee:Emerson Ricardo Pansarin
Support Opportunities: Research Grants - Young Investigators Grants