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100.1.#.a: González, Dolores; Vovides, Andrew P.

524.#.#.a: González, Dolores, et al. (2012). A modification to the SCAR (Sequence Characterized Amplified Region) method provides phylogenetic insights within Ceratozamia (Zamiaceae). Revista Mexicana de Biodiversidad; Vol. 83, núm. 4, 2012: diciembre. Recuperado de https://repositorio.unam.mx/contenidos/4109845

245.1.0.a: A modification to the SCAR (Sequence Characterized Amplified Region) method provides phylogenetic insights within Ceratozamia (Zamiaceae)

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Instituto de Biología, UNAM

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264.#.1.c: 2012-07-01

653.#.#.a: Phylogeny; Cycads; Digested SCAR; molecular markers; RAPD; restriction enzymes; polymorphic loci; parsimony

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC-ND 4.0 Internacional, https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.es, fecha de asignación de la licencia 2012-07-01, para un uso diferente consultar al responsable jurídico del repositorio por medio de falvarez@ib.unam.mx

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520.3.#.a: Phylogenetic relationships among closely related plant species is still problematic. DNA intergenic regions often are insufficiently variable to provide desired resolution or support. In this study, a modification to the Sequence Characterized Amplified Region (SCAR) method was used to find polymorphic loci for phylogenetic analyses within Ceratozamia. RAPD markers were first used to detect variation in five species. Then, equal length fragments in two or more species were excised from the gel, purified and digested with frequent cutter restriction enzymes for isolating both ends, which have the same primer site. Later, digested fragments were sequenced with the RAPD primer. Last, variable sequences were used to design specific primers for amplifying and sequencing all species for phylogenetic analyses. Our results confirmed the previously known high genome sequence resemblance within this genus that contrasts with its high morphological variation. Only six parsimony informative characters were generated with this approach. Nonetheless, the SCAR method provided some phylogenetic insights. Three main clades consistent with distribution ranges of the species were detected. The approach presented here was effective to solve some relationships within the genus and can be implemented in other organisms to find polymorphic loci for phylogenetic studies.

773.1.#.t: Revista Mexicana de Biodiversidad; Vol. 83, núm. 4 (2012): diciembre

773.1.#.o: http://www.revista.ib.unam.mx/index.php/bio

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780.1.2.t: Anales del Instituto de Biología serie Botánica y Anales del Instituto de Biología serie Zoología

264.#.1.b: Instituto de Biología, UNAM

758.#.#.1: http://www.revista.ib.unam.mx/index.php/bio

doi: https://doi.org/10.22201/ib.20078706e.2012.4.1275

handle: 76bab55bcb856ae7

harvesting_date: 2020-09-23 00:00:00.0

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Artículo

A modification to the SCAR (Sequence Characterized Amplified Region) method provides phylogenetic insights within Ceratozamia (Zamiaceae)

González, Dolores; Vovides, Andrew P.

Instituto de Biología, UNAM, publicado en Revista Mexicana de Biodiversidad, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Cita

González, Dolores, et al. (2012). A modification to the SCAR (Sequence Characterized Amplified Region) method provides phylogenetic insights within Ceratozamia (Zamiaceae). Revista Mexicana de Biodiversidad; Vol. 83, núm. 4, 2012: diciembre. Recuperado de https://repositorio.unam.mx/contenidos/4109845

Descripción del recurso

Autor(es)
González, Dolores; Vovides, Andrew P.
Tipo
Artículo de Investigación
Área del conocimiento
Biología y Química
Título
A modification to the SCAR (Sequence Characterized Amplified Region) method provides phylogenetic insights within Ceratozamia (Zamiaceae)
Fecha
2012-07-01
Resumen
Phylogenetic relationships among closely related plant species is still problematic. DNA intergenic regions often are insufficiently variable to provide desired resolution or support. In this study, a modification to the Sequence Characterized Amplified Region (SCAR) method was used to find polymorphic loci for phylogenetic analyses within Ceratozamia. RAPD markers were first used to detect variation in five species. Then, equal length fragments in two or more species were excised from the gel, purified and digested with frequent cutter restriction enzymes for isolating both ends, which have the same primer site. Later, digested fragments were sequenced with the RAPD primer. Last, variable sequences were used to design specific primers for amplifying and sequencing all species for phylogenetic analyses. Our results confirmed the previously known high genome sequence resemblance within this genus that contrasts with its high morphological variation. Only six parsimony informative characters were generated with this approach. Nonetheless, the SCAR method provided some phylogenetic insights. Three main clades consistent with distribution ranges of the species were detected. The approach presented here was effective to solve some relationships within the genus and can be implemented in other organisms to find polymorphic loci for phylogenetic studies.
Tema
Phylogeny; Cycads; Digested SCAR; molecular markers; RAPD; restriction enzymes; polymorphic loci; parsimony
Idioma
eng
ISSN
2007-8706; 1870-3453

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