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Título: | Epigenetic changes detected in micropropagated hop plants |
Autor: | Peredo, E. L.; Arroyo García, Rosa Adela; Revilla, M. Ángeles | Palabras clave: | Humulus lupulus MSAP RAPD REMAP Somaclonal variation |
Fecha de publicación: | 2009 | Editor: | Elsevier | Citación: | Journal of Plant Physiology 166(10): 1101-1111 (2009) | Resumen: | Micropropagation is a widely used technique in hops (Humulus lupulus L.). However, to the best of our knowledge, the genetic and epigenetic stability of the microplants has never been tested before. In the present study, two hop accessions were established in vitro and micropropagated for 2 years. The genetic and epigenetic stability of the in vitro plants was analyzed with several molecular techniques random amplified DNA polymorphism (RAPD), retrotransposon microsatellite amplified polymorphism (REMAP), and methylation-sensitive amplification polymorphism (MSAP). No genetic variation among control and treated plants was found, even after 12 cycles of micropropagation. Epigenetic variation was detected, first, when field and in vitro samples were compared. Nearly a 30% of the detected fragments presented the same pattern of alterations in all the vitroplants. Second, lower levels of epigenetic variation were detected among plants from the different subcultures. Part of this detected variation seemed to be accumulated along the 12 sequential subcultures tested. © 2009 Elsevier GmbH. All rights reserved. | URI: | http://hdl.handle.net/10261/290890 | DOI: | 10.1016/j.jplph.2008.12.015 | ISSN: | 0176-1617 |
Aparece en las colecciones: | (INIA) Artículos |
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