02232nas a2200217   4500008004100000245016700041210006900208300001100277490000800288520152600296653001401822653001401836100001901850700001501869700002101884700001601905700001601921700001401937700001501951856004801966       2009                        eng d00aGenetic variation in natural populations of Anthurium sinuatum and A. pentaphyllum var. pentaphyllum (Araceae) from north-east Brazil using AFLP molecular markers0 aGenetic variation in natural populations of Anthurium sinuatum a  a88-1050 v1593 a<p>Genetic variation was investigated using AFLP markers in 12 populations of Anthurium sinuatum and A. pentaphyllum var. pentaphyllum (Araceae) in north-east Brazil, Amazonia and the Brazilian Atlantic forest. Two unique genetic patterns characterized the populations of A. sinuatum as a group, but no correlation between genetic and geographical interpopulation distance was found; the Amazonian population was not separated from that in Cear&aacute;. The isolated Cear&aacute; brejo populations of A. sinuatum were genetically distinct, but genetic diversity levels were similar to populations elsewhere, with no evidence of genetic erosion. Anthurium pentaphyllum populations were significantly different from each other; Bayesian genetic structural analysis found no common genetic pattern, but revealed genetic clusters unique to subgroups and individual populations in the Atlantic forest and French Guiana. Anthurium pentaphyllum and A. sinuatum can be distinguished genetically, but individuals of both species formed intermediate genetic clusters that blurred their distinction. We suggest that genetic mixing of A. sinuatum and A. pentaphyllum has occurred in north-east Brazil, possibly connected with cycles of humid forest expansion. The weak genetic structure in A. sinuatum is consistent with the natural fragmentation of continuous forest areas, possibly during the Holocene. This study highlights the scientific importance of the highly threatened brejo forests for tropical American biogeography.</p>
10aAnthurium10amolecular1 aAndrade, I., M1 aMayo, S.J.1 aVan den Berg, C.1 aFay, M., F.1 aChester, M.1 aLexer, C.1 aKirkup, D.  uhttps://cate-araceae.myspecies.info/node/11