Author:
Santos Mirella Pupo,da Silva Rabelo Araújo João Victor,Vinícius de Sant’anna Lopes Arthur,Vettorazzi Julio Cesar Fiorio,da Fonseca Rodrigo Nunes,Calderón Emiliano Nicolas,Boechat Marcela Santana Bastos,Arêdes Fernanda Abreu Santana,Pereira Messias Gonzaga,Campos Naiara Viana,Santos Fernando Marino Gomes dos,Fernandes Taís Nogueira,Martins Rodrigo Lemes,de Assis Esteves Francisco
Abstract
AbstractTwo lycophytes endemic species have been recently described at the State of Pará, in the Amazon forest located in the North of Brazil. Genetic diversity and population structure of Isoetes cangae and I. serracarajensis were investigated through ISSR molecular markers. These analyses aim to establish strategies for future attempts for species conservation. From sixteen primers, 115 gel bands were identified from which 87% were polymorphic. A high level of polymorphic loci (81,74 % e 68,48 %) and a high Shannon index for intra populational genetic diversity was observed for each species (Sh=0.376 e 0.289) I. cangae and I. serracarajensis, respectively. The largest genetic diversity of both species relies in their own populations. The coefficient of genetic differentiation between population areas (GST) was higher in I. serracarajensis (0.5440) than in I. cangae (0.2250). Gene flow was high between I. cangae populations (1.7142) and very low in I. serracarajensis (0.4190). Principal Component Analysis (PCoA) showed that individual plants were allocated into species-specific and population groups. Overall, the results further show that I. serracarajensis (0.5440) and I. cangae are two species with considerable genetic variation. These results should be considered for effective conservation strategies of both species.
Publisher
Cold Spring Harbor Laboratory
Cited by
3 articles.
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