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Genetic diversity and population structure of Pilosocereus jauruensis: a cactus species restricted to xeric vegetation enclaves around the biome Pantanal

Grant number: 12/12096-0
Support Opportunities:Scholarships in Brazil - Master
Effective date (Start): September 01, 2012
Effective date (End): August 31, 2014
Field of knowledge:Biological Sciences - Genetics - Plant Genetics
Principal Investigator:Evandro Marsola de Moraes
Grantee:Mariana Ortiz de Godoy
Host Institution: Centro de Ciências e Tecnologias para a Sustentabilidade (CCTS). Universidade Federal de São Carlos (UFSCAR). Sorocaba , SP, Brazil


Studies focusing on genetic diversity and population structure of naturally fragmented taxa are of conservation concerning. Such fragmented populations are more subject to endogamy and genetic diversity erosion due to the pronounced effects of isolation and genetic drift. Pilosocereus jauruensis is a columnar cactus species restricted to patches of xeric vegetation on rock outcrops occurring around the Pantanal biome in south-west South America. This species was recently resurrected from synonymy in the P. aurisetus species group, which encompasses a suite of closely related taxa occurring on patches of rockfields vegetation in eastern and central Brazil. Populations restricted to those patches of xeric vegetation in South America are thought to represent relicts of wider ancient distribution as a result of climatic changes during the Quaternary. The present study aims to investigate the genetic population structure of P. jauruensis by using microsatellite markers and to verify the relative importance of past and current gene flow on genetic diversity maintenance in this species. The results of this study might uncover distinct population segments within P. jauruensis since a number of taxa has been described and synonymized in its area of distribution. (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)
KHAN, GULZAR; GODOY, MARIANA O.; FRANCO, FERNANDO F.; PEREZ, MANOLO F.; TAYLOR, NIGEL P.; ZAPPI, DANIELA C.; MACHADO, MARLON C.; MORAES, EVANDRO M.. Extreme population subdivision or cryptic speciation in the cactus Pilosocereus jauruensis? A taxonomic challenge posed by a naturally fragmented system. SYSTEMATICS AND BIODIVERSITY, v. 16, n. 2, p. 188-199, . (12/12096-0)

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