Plant domestication: a model for studying the selection of linkage
Plant domestication: a model for studying the selection of linkage
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DOI：
10.1046/j.1420-9101.1999.00115.x
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发表时间：
1999-11-01
影响因子：
2.1
通讯作者：
Gouyon, PH
中科院分区：
文献类型：
--
作者：
D'Ennequin, ML;Toupance, B;Gouyon, PH
驯化的过程导致了在属于同一科但具有不同育种系统的植物物种之间获得通常相似的性状。因此，驯化是一个有用的模式，研究进化的反应，选择在植物与对照育种系统。我们考虑一个随机模型，模拟基因现在之间的自然种群和初始种群含有驯化表型的突变体在低频率。我们假设大量的基因座对栽培表型的贡献是相等的。我们的研究结果表明，保持突变（“驯化”）等位基因的基因座的数量是较大的，在自花授粉的植物比异花授粉的，驯化可以导致选择紧密连锁的基因组合在异花授粉的植物。这项工作提供了一个通用的模型，通过筛选效应的基因簇的选择，并讨论了比较与模型提出来解释的连锁基因的进化决定翅膀的模式，在蝴蝶表现出Bairusmimicry。
The profess of domestication leads to acquisition of traits that are often similar between plant species that belong to the same family but have different breeding systems. Hence domestication is a useful model for studying evolutionary responses to selection in plants with contrasting breeding systems. We consider a stochastic model simulating gene now between a natural population and an initial population containing mutants with domesticated phenotypes at low frequency. We assume that a large number of loci contribute equally to the cultivated phenotype. Our results indicate that the number of loci for which the mutant ('domestication') allele is maintained is larger in autogamous plants than in allogamous ones and that domestication can lead to the selection of tightly linked combinations of genes in allogamous plants. This work provides a general model for the selection of gene clusters through a sieve effect and it is discussed in comparison with models proposed to explain the evolution of linkage of genes determining wing patterns in butterflies exhibiting Batesian mimicry.