DNA sequence variation of drought-response candidate genes in Austrocedrus chilensis

Background: Austrocedrus chilensis (D. Don) Pic. Ser. et Bizzarri commonly known as Patagonian cypress is a member of the Cupressaceae family, characterized by a high adaptive potential for growing in marginal areas and good timber quality. The species grows over a wide area and under a wide range o...

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Autores principales:	Pomponio,María F, Torales,Susana, Gallo,Leonardo A, Pastorino,Mario J, Marchelli,Paula, Cervera,María Teresa, Poltri,Susana Marcucci
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso 2013
Materias:	adaptive variation balancing selection Patagonian cypress single nucleotide polymorphisms (SNPs)
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000200003
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spelling	oai:scielo:S0717-345820130002000032013-03-27DNA sequence variation of drought-response candidate genes in Austrocedrus chilensisPomponio,María FTorales,SusanaGallo,Leonardo APastorino,Mario JMarchelli,PaulaCervera,María TeresaPoltri,Susana Marcucci adaptive variation balancing selection Patagonian cypress single nucleotide polymorphisms (SNPs) Background: Austrocedrus chilensis (D. Don) Pic. Ser. et Bizzarri commonly known as Patagonian cypress is a member of the Cupressaceae family, characterized by a high adaptive potential for growing in marginal areas and good timber quality. The species grows over a wide area and under a wide range of rainfall. This study assessed adaptive genetic variation at SNP level in candidate genes involved in response to drought stress. Results: A total of 18 single nucleotide polymorphisms (SNPs) were found among 1,428 bp. Average nucleotide diversity value (π = 0.00312) was similar to those previously reported in other Cupressaceae. The Fst average among genes and populations was 0.163 and the lowest differentiation was observed in continuous and humid populations. A number of neutrality tests were applied to find evidence of positive selection in our candidate gene set, but only AcAQP2 gene in Pedregoso and San Ramón populations revealed significant departures from neutrality with positive values suggesting balancing selection. Conclusions: In this study we report the levels of nucleotide diversity searched in some drought stress candidate genes in Austrocedrus chilensis and the selective factors that may be acting on this species.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.16 n.2 20132013-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000200003en10.2225/vol16-issue2-fulltext-7
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	adaptive variation balancing selection Patagonian cypress single nucleotide polymorphisms (SNPs)
spellingShingle	adaptive variation balancing selection Patagonian cypress single nucleotide polymorphisms (SNPs) Pomponio,María F Torales,Susana Gallo,Leonardo A Pastorino,Mario J Marchelli,Paula Cervera,María Teresa Poltri,Susana Marcucci DNA sequence variation of drought-response candidate genes in Austrocedrus chilensis
description	Background: Austrocedrus chilensis (D. Don) Pic. Ser. et Bizzarri commonly known as Patagonian cypress is a member of the Cupressaceae family, characterized by a high adaptive potential for growing in marginal areas and good timber quality. The species grows over a wide area and under a wide range of rainfall. This study assessed adaptive genetic variation at SNP level in candidate genes involved in response to drought stress. Results: A total of 18 single nucleotide polymorphisms (SNPs) were found among 1,428 bp. Average nucleotide diversity value (π = 0.00312) was similar to those previously reported in other Cupressaceae. The Fst average among genes and populations was 0.163 and the lowest differentiation was observed in continuous and humid populations. A number of neutrality tests were applied to find evidence of positive selection in our candidate gene set, but only AcAQP2 gene in Pedregoso and San Ramón populations revealed significant departures from neutrality with positive values suggesting balancing selection. Conclusions: In this study we report the levels of nucleotide diversity searched in some drought stress candidate genes in Austrocedrus chilensis and the selective factors that may be acting on this species.
author	Pomponio,María F Torales,Susana Gallo,Leonardo A Pastorino,Mario J Marchelli,Paula Cervera,María Teresa Poltri,Susana Marcucci
author_facet	Pomponio,María F Torales,Susana Gallo,Leonardo A Pastorino,Mario J Marchelli,Paula Cervera,María Teresa Poltri,Susana Marcucci
author_sort	Pomponio,María F
title	DNA sequence variation of drought-response candidate genes in Austrocedrus chilensis
title_short	DNA sequence variation of drought-response candidate genes in Austrocedrus chilensis
title_full	DNA sequence variation of drought-response candidate genes in Austrocedrus chilensis
title_fullStr	DNA sequence variation of drought-response candidate genes in Austrocedrus chilensis
title_full_unstemmed	DNA sequence variation of drought-response candidate genes in Austrocedrus chilensis
title_sort	dna sequence variation of drought-response candidate genes in austrocedrus chilensis
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000200003
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DNA sequence variation of drought-response candidate genes in Austrocedrus chilensis

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