11522201

Source:http://linkedlifedata.com/resource/pubmed/id/11522201

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Predicate	Object
rdf:type	pubmed:Citation
lifeskim:mentions	umls-concept:C0011570, umls-concept:C0015219, umls-concept:C0021144, umls-concept:C0032098, umls-concept:C0598779, umls-concept:C0686907, umls-concept:C1260875
pubmed:issue	1478
pubmed:dateCreated	2001-8-27
pubmed:abstractText	Many plants are perennial, but most studies of inbreeding depression and mating system evolution focus on annuals. This paper extends a population genetic model of inbreeding depression due to recessive deleterious mutations to perennials. The model incorporates life history and mating system variation, and multiplicative selection across many genetic loci. In the absence of substantial mitotic mutation, perennials have higher mean fitness and lower, or even negative, inbreeding depression than annuals with the same mating system. As in annuals, self fertilization exposes deleterious recessive mutations to selection, increasing mean fitness and decreasing inbreeding depression. Including mitotic mutation decreases mean fitness while increasing inbreeding depression. Perenniality introduces a kind of selective sieve, such that strongly recessive mutations contribute disproportionately to mean fitness and inbreeding depression. In the presence of high mitotic mutation, this selective sieve may provide a mechanistic basis for high inbreeding depression observed in some long lived perennials. Without substantial mitotic mutation, it is difficult to reconcile genetically based models of inbreeding depression with the empirical generalization that perennials outcross while related annuals self fertilize.
pubmed:language	eng
pubmed:journal	http://linkedlifedata.com/resource/pubmed/journal/101245157
pubmed:citationSubset	IM
pubmed:status	MEDLINE
pubmed:month	Sep
pubmed:issn	0962-8452
pubmed:author	pubmed-author:MorganM TMT
pubmed:issnType	Print
pubmed:day	7
pubmed:volume	268
pubmed:owner	NLM
pubmed:authorsComplete	Y
pubmed:pagination	1817-24
pubmed:dateRevised	2010-11-18
pubmed:meshHeading	pubmed-meshheading:11522201-Biological Evolution, pubmed-meshheading:11522201-Plant Physiological Phenomena
pubmed:year	2001
pubmed:articleTitle	Consequences of life history for inbreeding depression and mating system evolution in plants.
pubmed:affiliation	School of Biological Sciences, Washington State University, Pullman, WA 99164-4236, USA.
pubmed:publicationType	Journal Article, Research Support, U.S. Gov't, Non-P.H.S.