Questions and concepts in plant virus evolution: a historical perspective

Garcia-Arenal Rodriguez, Fernando y Fraile Pérez, Aurora (2008). Questions and concepts in plant virus evolution: a historical perspective. En: "Plant Virus Evolution". Springer, Berlin, Alemania, pp. 1-14. ISBN 978-3-540-75762-7.

Descripción

Título: Questions and concepts in plant virus evolution: a historical perspective
Autor/es:
  • Garcia-Arenal Rodriguez, Fernando
  • Fraile Pérez, Aurora
Tipo de Documento: Sección de Libro
Título del Libro: Plant Virus Evolution
Fecha: 2008
ISBN: 978-3-540-75762-7
Materias:
Escuela: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Departamento: Biotecnologia [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The interest in plant virus evolution can be dated to the late 1920s, when it was shown that plant virus populations were genetically heterogeneous, and that Ihcir composition changed according to the experimental conditions. Many important ideas were generated prior to the era of molecular virology, such as the role of hostand vector-associated selection in virus evolution, and also that small populations, gene coadaptation and evolutionary trade-offs could limit the efficiency of selection. The analysis of viral genomes in the 1980s and 1990s established the quasispecieslike structure of their populations and allowed extensive analyses of the relationships among vims strains and species. The concept that vims populations had huge sizes and high rates of adaptive mutations became prevalent in this period, with selection mostly invoked as explaining observed patterns of population structure and evolution. In recent times vims evolution has been coming into line with evolutionary biology, and a more complex scenario has emerged. Population bottlenecks during host colonization, during host-to-host transmission or during host population fluctuations may result in smaller population sizes, and genetic drift has been recognized as an important evolutionary factor. Also, particularities of viral genomes such as low levels of neutrality, multifunctionality of coding and encoded sequences or strong epistasis could constrain the plasticity of viral genomes and hinder their response to selection. Exploring the complexities of plant vims evolution will continue to be a challenge for the future, particularly as it affects host, vector and ecosystem dynamics.

Más información

ID de Registro: 4767
Identificador DC: http://oa.upm.es/4767/
Identificador OAI: oai:oa.upm.es:4767
URL Oficial: http://www.springer.com/life+sciences/plant+sciences/book/978-3-540-75762-7
Depositado por: Memoria Investigacion
Depositado el: 02 Nov 2010 10:04
Ultima Modificación: 20 Abr 2016 13:51
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