与交配型相关的突变会破坏衣藻中叶绿体基因的单亲遗传。
Mating type linked mutations which disrupt the uniparental transmission of chloroplast genes in chlamydomonas.
作者信息
Gillham N W, Boynton J E, Johnson A M, Burkhart B D
出版信息
Genetics. 1987 Apr;115(4):677-84. doi: 10.1093/genetics/115.4.677.
Abstract
In Chlamydomonas reinhardtii, chloroplast genomes are normally transmitted by the mating type plus (mt+) parent and mitochondrial genomes by the mating type minus (mt-) parent. In this paper we describe three new nuclear mutations, designated mat-3-1 to -3, which are tightly linked to the mt+ allele and permit high transmission of chloroplast genomes from the mt- parent, but have no effect on transmission of mitochondrial genomes. We also show that mat-1, reported by others to be a nuclear mutation linked to mt- which promotes transmission of chloroplast genomes by the mt- parent, is probably a vegetative diploid since it contains both mt+ and mt- alleles. Vegetative diploids behave as if they are mt- with respect to mating, but possess a level of chloroplast gene transmission intermediate between that of haploid mt- and mt+ stocks.
摘要
在莱茵衣藻中，叶绿体基因组通常由正交配型（mt +）亲本传递，线粒体基因组由负交配型（mt -）亲本传递。在本文中，我们描述了三个新的核突变，命名为mat - 3 - 1至 - 3，它们与mt +等位基因紧密连锁，可使叶绿体基因组从mt -亲本高频率传递，但对线粒体基因组的传递没有影响。我们还表明，其他人报道的mat - 1是一个与mt -连锁的核突变，可促进mt -亲本传递叶绿体基因组，它可能是一个营养二倍体，因为它同时包含mt +和mt -等位基因。营养二倍体在交配方面表现得好像是mt -，但叶绿体基因传递水平介于单倍体mt -和mt +品系之间。
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