Using Next Generation RAD Sequencing to Isolate Multispecies Microsatellites for Pilosocereus (Cactaceae)

Autor(es)

Bonatelli, Isabel A. S. ^[1] ; Carstens, Bryan C. ^[2] ; Moraes, Evandro M. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Dept Biol, Sao Paulo - Brazil

^[2] Ohio State Univ, Dept Ecol Evolut & Organismal Biol, Columbus, OH 43210 - USA

• Tipo de documento: Artigo Científico
• Fonte: PLoS One; v. 10, n. 11 NOV 11 2015.
• Citações Web of Science: 6

Resumo

Microsatellite markers (also known as SSRs, Simple Sequence Repeats) are widely used in plant science and are among the most informative molecular markers for population genetic investigations, but the development of such markers presents substantial challenges. In this report, we discuss how next generation sequencing can replace the cloning, Sanger sequencing, identification of polymorphic loci, and testing cross-amplification that were previously required to develop microsatellites. We report the development of a large set of microsatellite markers for five species of the Neotropical cactus genus Pilosocereus using a restriction-site-associated DNA sequencing (RAD-seq) on a Roche 454 platform. We identified an average of 165 microsatellites per individual, with the absolute numbers across individuals proportional to the sequence reads obtained per individual. Frequency distribution of the repeat units was similar in the five species, with shorter motifs such as diand trinucleotide being the most abundant repeats. In addition, we provide 72 microsatellites that could be potentially amplified in the sampled species and 22 polymorphic microsatellites validated in two populations of the species Pilosocereus machrisii. Although low coverage sequencing among individuals was observed for most of the loci, which we suggest to be more related to the nature of the microsatellite markers and the possible bias inserted by the restriction enzymes than to the genome size, our work demonstrates that an NGS approach is an efficient method to isolate multispecies microsatellites even in non-model organisms. (AU)

• Processo FAPESP: 12/22477-0 - Filogeografia de nova geração do grupo de cactáceas Pilosocereus aurisetus: teste de hipóteses e desenvolvimento de marcadores nucleares
• Beneficiário: Evandro Marsola de Moraes
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 12/22857-8 - Estrutura genética de espécies de cactaceae do grupo pilosocereus aurisetus utilizando marcadores microssatélites desenvolvidos a partir de sequenciamento de nova geração
• Beneficiário: Isabel Aparecida da Silva Bonatelli
• Modalidade de apoio: Bolsas no Brasil - Doutorado