Natural history of the narrow endemics Ipomoea cavalcantei and I. marabaensis from Amazon Canga savannahs

Abstract Amazon comprises a vast variety of ecosystems, including savannah-like Canga barrens that evolved on iron-lateritic rock plateaus of the Carajás Mountain range. Individual Cangas are enclosed by the rain forest, indicating insular isolation that enables speciation and plant community differ...

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Autores principales:	Elena Babiychuk, Sergei Kushnir, Santelmo Vasconcelos, Mariana Costa Dias, Nelson Carvalho-Filho, Gisele Lopes Nunes, Jorge Filipe dos Santos, Lourival Tyski, Delmo Fonseca da Silva, Alexandre Castilho, Vera Lucia Imperatriz Fonseca, Guilherme Oliveira
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e051666bd6e14ee8af6844c1a6b8acbe
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spelling	oai:doaj.org-article:e051666bd6e14ee8af6844c1a6b8acbe2021-12-02T12:32:13ZNatural history of the narrow endemics Ipomoea cavalcantei and I. marabaensis from Amazon Canga savannahs10.1038/s41598-017-07398-z2045-2322https://doaj.org/article/e051666bd6e14ee8af6844c1a6b8acbe2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07398-zhttps://doaj.org/toc/2045-2322Abstract Amazon comprises a vast variety of ecosystems, including savannah-like Canga barrens that evolved on iron-lateritic rock plateaus of the Carajás Mountain range. Individual Cangas are enclosed by the rain forest, indicating insular isolation that enables speciation and plant community differentiation. To establish a framework for the research on natural history and conservation management of endemic Canga species, seven chloroplast DNA loci and an ITS2 nuclear DNA locus were used to study natural molecular variation of the red flowered Ipomoea cavalcantei and the lilac flowered I. marabaensis. Partitioning of the nuclear and chloroplast gene alleles strongly suggested that the species share the most recent common ancestor, pointing a new independent event of the red flower origin in the genus. Chloroplast gene allele analysis showed strong genetic differentiation between Canga populations, implying a limited role of seed dispersal in exchange of individuals between Cangas. Closed haplotype network topology indicated a requirement for the paternal inheritance in generation of cytoplasmic genetic variation. Tenfold higher nucleotide diversity in the nuclear ITS2 sequences distinguished I. cavalcantei from I. marabaensis, implying a different pace of evolutionary changes. Thus, Canga ecosystems offer powerful venues for the study of speciation, multitrait adaptation and the origins of genetic variation.Elena BabiychukSergei KushnirSantelmo VasconcelosMariana Costa DiasNelson Carvalho-FilhoGisele Lopes NunesJorge Filipe dos SantosLourival TyskiDelmo Fonseca da SilvaAlexandre CastilhoVera Lucia Imperatriz FonsecaGuilherme OliveiraNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-15 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Elena Babiychuk Sergei Kushnir Santelmo Vasconcelos Mariana Costa Dias Nelson Carvalho-Filho Gisele Lopes Nunes Jorge Filipe dos Santos Lourival Tyski Delmo Fonseca da Silva Alexandre Castilho Vera Lucia Imperatriz Fonseca Guilherme Oliveira Natural history of the narrow endemics Ipomoea cavalcantei and I. marabaensis from Amazon Canga savannahs
description	Abstract Amazon comprises a vast variety of ecosystems, including savannah-like Canga barrens that evolved on iron-lateritic rock plateaus of the Carajás Mountain range. Individual Cangas are enclosed by the rain forest, indicating insular isolation that enables speciation and plant community differentiation. To establish a framework for the research on natural history and conservation management of endemic Canga species, seven chloroplast DNA loci and an ITS2 nuclear DNA locus were used to study natural molecular variation of the red flowered Ipomoea cavalcantei and the lilac flowered I. marabaensis. Partitioning of the nuclear and chloroplast gene alleles strongly suggested that the species share the most recent common ancestor, pointing a new independent event of the red flower origin in the genus. Chloroplast gene allele analysis showed strong genetic differentiation between Canga populations, implying a limited role of seed dispersal in exchange of individuals between Cangas. Closed haplotype network topology indicated a requirement for the paternal inheritance in generation of cytoplasmic genetic variation. Tenfold higher nucleotide diversity in the nuclear ITS2 sequences distinguished I. cavalcantei from I. marabaensis, implying a different pace of evolutionary changes. Thus, Canga ecosystems offer powerful venues for the study of speciation, multitrait adaptation and the origins of genetic variation.
format	article
author	Elena Babiychuk Sergei Kushnir Santelmo Vasconcelos Mariana Costa Dias Nelson Carvalho-Filho Gisele Lopes Nunes Jorge Filipe dos Santos Lourival Tyski Delmo Fonseca da Silva Alexandre Castilho Vera Lucia Imperatriz Fonseca Guilherme Oliveira
author_facet	Elena Babiychuk Sergei Kushnir Santelmo Vasconcelos Mariana Costa Dias Nelson Carvalho-Filho Gisele Lopes Nunes Jorge Filipe dos Santos Lourival Tyski Delmo Fonseca da Silva Alexandre Castilho Vera Lucia Imperatriz Fonseca Guilherme Oliveira
author_sort	Elena Babiychuk
title	Natural history of the narrow endemics Ipomoea cavalcantei and I. marabaensis from Amazon Canga savannahs
title_short	Natural history of the narrow endemics Ipomoea cavalcantei and I. marabaensis from Amazon Canga savannahs
title_full	Natural history of the narrow endemics Ipomoea cavalcantei and I. marabaensis from Amazon Canga savannahs
title_fullStr	Natural history of the narrow endemics Ipomoea cavalcantei and I. marabaensis from Amazon Canga savannahs
title_full_unstemmed	Natural history of the narrow endemics Ipomoea cavalcantei and I. marabaensis from Amazon Canga savannahs
title_sort	natural history of the narrow endemics ipomoea cavalcantei and i. marabaensis from amazon canga savannahs
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/e051666bd6e14ee8af6844c1a6b8acbe
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Natural history of the narrow endemics Ipomoea cavalcantei and I. marabaensis from Amazon Canga savannahs

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