Genetics of color polymorphism in the pea aphid, Acyrthosiphon pisum.

Genetics of color polymorphism in the pea aphid, Acyrthosiphon pisum.
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DOI:
10.1673/031.010.9501
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发表时间:
2010
期刊:
Journal of insect science (Online)
影响因子:
--
通讯作者:
Losey JE
Losey JE
中科院分区:
其他
文献类型:
--
作者:
Caillaud MC;Losey JE

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探讨了豌豆蚜Acyrthosiphon pisum(Harris)(同翅目:胸喙亚目)体色多态性的遗传基础,其中有两种体色变体(粉红色和绿色)。实验室杂交和孟德尔遗传分析表明,豌豆蚜虫的颜色多态性是由一个单一的双等位基因位点,我们命名为colorama,等位基因P和p,粉红色是显性的绿色。假定的基因型为Pp或PP的粉红色变体,和pp的绿色变体。该基因座显示为常染色体。最后,没有证据表明交叉方向对颜色遗传的影响,从而表明细胞质效应和/或母系遗传的共生体在豌豆蚜虫颜色多态性的遗传中不起作用。在一个系统中,遗传调查是可能的颜色多态性的一个简单的遗传决定论的存在,可能有利于调查的生理和分子机制的遗传为基础的颜色形态变化,并建立一个链接,这个位点和健身在一系列的生态条件。
The genetic basis of color polymorphism is explored in the pea aphid, Acyrthosiphon pisum (Harris) (Homoptera: Sternorrhyncha), in which two color morphs have been described (pink or green). Laboratory crosses and a Mendelian genetic analysis reveal that color polymorphism in pea aphids is determined by a single biallelic locus, which we name colorama, with alleles P and p, pink being dominant to green. The putative genotypes are Pp or PP for pink morphs, and pp for green morphs. This locus is shown to be autosomal. Last, there was no evidence of influence of the direction of the cross on color inheritance, thus showing that cytoplasmic effects and/or maternally-inherited symbionts play no role in the inheritance of color polymorphism in pea aphids. The existence of a simple genetic determinism for color polymorphism in a system in which genetic investigation is possible may facilitate investigations on the physiological and molecular mechanisms of genetically-based color morph variation, and the establishment of a link between this locus and fitness in a range of ecological conditions.
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