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Plant genome responses to environmental variation: what Orchidaceae have to tell?


Vicariant species have disjunctive distributions, causing speciation and endemism. Studies relating genetic structure with geographical distribution in plants is fundamental, allowing understand the habitat fragmentation consequences on the plant species biology and the relationship between environment and genome. However, despite the mega plant biodiversity found in the Neotropics, practically there is no work in that vicariance has been addressed from the standpoint of the chromosome. To minimize this gap, the family Orchidaceae will be used as a model, because it presents species occurring in open vegetation, such as closed, different habits and wide geographical distribution. The observed changes in genomic characters can be related to environmental variations, keeping the rate of recombination in situations that favor the maintenance of a given genotype or changing the recombination rate in conditions of great environmental instability. Under these instability conditions, the retrotransposons may also become more active, re-standardizing the genome and leading to an increase in the amount of DNA, and this variation is considered a major cause of divergence between species. To this end, four subprojects are proposed, where species of Epidendrum, Acianthera and Maxillarineae will be analyzed in terms of chromosome and genome size in a cytogeographic approach, aiming at understanding the genome-environment relationships. (AU)

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Scientific publications (11)
(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)
ENOQUE MEDEIROS-NETO; FELIPE NOLLET; ANA PAULA MORAES; LEONARDO P. FELIX. Intrachromosomal karyotype asymmetry in Orchidaceae. GENETICS AND MOLECULAR BIOLOGY, v. 40, n. 3, p. 610-619, . (11/22215-3)
MORAES, ANA PAULA; SIMOES, ANDRE OLMOS; ALAYON, DARIO ISIDRO OJEDA; DE BARROS, FABIO; FORNI-MARTINS, ELIANA REGINA. Detecting Mechanisms of Karyotype Evolution in Heterotaxis (Orchidaceae). PLoS One, v. 11, n. 11, . (11/22215-3, 08/03673-8)
MORAES, A. P.; KOEHLER, S.; CABRAL, J. S.; GOMES, S. S. L.; VICCINI, L. F.; BARROS, F.; FELIX, L. P.; GUERRA, M.; FORNI-MARTINS, E. R.. Karyotype diversity and genome size variation in Neotropical Maxillariinae orchids. Plant Biology, v. 19, n. 2, p. 298-308, . (11/22215-3, 08/03673-8)
POLIDO, C. A.; MANTELLO, C. C.; MORAES, A. P.; SOUZA, A. P.; FORNI-MARTINS, E. R.. Microsatellite in Aeschynomene falcata (Leguminosae): diversity, cross-amplification, and chromosome localization. Genetics and Molecular Research, v. 13, n. 4, p. 10390-10397, . (11/22215-3, 10/19132-6)
PINHEIRO, FABIO; CARDOSO-GUSTAVSON, POLIANA; SUZUKI, ROGERIO MAMORU; ABRAO, MONIQUE CRISTINE R.; GUIMARAES, LEONARDO R. S.; DRAPER, DAVID; MORAES, ANA PAULA. Strong postzygotic isolation prevents introgression between two hybridizing Neotropical orchids, Epidendrum denticulatum and E-fulgens. EVOLUTIONARY ECOLOGY, v. 29, n. 2, p. 229-248, . (12/22077-2, 10/16353-1, 09/15052-0, 11/22215-3)
SILVA, SAURA R.; MORAES, ANA PAULA; PENHA, HELEN A.; JULIAO, MARIA H. M.; DOMINGUES, DOUGLAS S.; MICHAEL, TODD P.; MIRANDA, VITOR F. O.; VARANI, ALESSANDRO M.. The Terrestrial Carnivorous Plant Utricularia reniformis Sheds Light on Environmental and Life-Form Genome Plasticity. INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES, v. 21, n. 1, . (13/25164-6, 18/02285-6, 13/05144-0, 11/22215-3)
DE OLIVEIRA, IRENICE GOMES; MORAES, ANA PAULA; DE ALMEIDA, ERTON MENDONCA; MEDEIROS DE ASSIS, FELIPE NOLLET; CABRAL, JULIANO S.; DE BARROS, FABIO; FELIX, LEONARDO P.. Chromosomal evolution in Pleurothallidinae (Orchidaceae: Epidendroideae) with an emphasis on the genus Acianthera: chromosome numbers and heterochromatin. Botanical Journal of the Linnean Society, v. 178, n. 1, p. 102-120, . (11/22215-3)
MORAES, ANA PAULA; SOUZA-CHIES, TATIANA T.; STIEHL-ALVES, EUDES M.; BURCHARDT, PAULA; EGGERS, LILIAN; SILJAK-YAKOVLEV, SONJA; BROWN, SPENCER C.; CHAUVEAU, OLIVIER; NADOT, SOPHIE; BOURGE, MICKAEL; et al. Evolutionary trends in Iridaceae: new cytogenetic findings from the New World. Botanical Journal of the Linnean Society, v. 177, n. 1, p. 27-49, . (11/22215-3)
MORAES, ANA P.; CHINAGLIA, MARIANA; PALMA-SILVA, CLARISSE; PINHEIRO, FABIO. Interploidy hybridization in sympatric zones: the formation of Epidendrum fulgens x E. puniceoluteum hybrids (Epidendroideae, Orchidaceae). ECOLOGY AND EVOLUTION, v. 3, n. 11, p. 3824-3837, . (12/22077-2, 11/22215-3, 09/17411-8, 09/15052-0, 11/00608-3, 09/52725-3)
. Intrachromosomal karyotype asymmetry in Orchidaceae. GENETICS AND MOLECULAR BIOLOGY, n. ahead, p. -, . (11/22215-3)
JULIANA P. CASTRO; ANA PAULA MORAES; MARK W. CHASE; ANGELINE M. S. SANTOS; FABIANE R. C. BATISTA; LEONARDO P. FELIX. Karyotype characterization and evolution of chromosome number in Cactaceae with special emphasis on subfamily Cactoideae. Acta Botanica Brasilica, v. 34, n. 1, p. 135-148, . (11/22215-3)

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