Department of Biology, Case Western Reserve University, 44106, Cleveland, Ohio, USA.
Curr Genet. 1980 Oct;2(2):131-8. doi: 10.1007/BF00420625.
The meiotic transmission of chloroplast DNA (cpDNA) was studied in crosses between two species of Chlamydomonas (C. moewusii and C. eugametos) which have substantial differences in cpDNA restriction patterns. The results provide a direct demonstration that cpDNA can be inherited in a uniparental pattern, paralleling the transmission of a uniparentally inherited antibiotic resistance marker. Thus, cpDNA could carry the uniparental genes of these species, but other extrachromosomal DNAs are not excluded as possible carriers. For example, C. moewusii was found to contain a set of low molecular weight (LMW) DNA species which cannot be detected in C. eugametos. These LMW DNA species are also transmitted uniparentally in the tetrads studied. Uniparentai transmission may not be an exclusive property of cpDNA in Chlamydomonas species.
叶绿体 DNA（cpDNA）的减数传递在两个种的衣藻（C. moewusii 和 C. eugametos）之间的杂交中进行，它们在 cpDNA 限制模式上有很大的差异。结果提供了直接的证据表明，cpDNA 可以以单亲遗传模式遗传，类似于单父系遗传的抗生素抗性标记的传递。因此，cpDNA 可能携带这些物种的单亲基因，但不能排除其他染色体外 DNA 作为可能的载体。例如，发现 C. moewusii 含有一组低分子量（LMW）DNA 物种，在 C. eugametos 中无法检测到。这些 LMW DNA 物种在研究的四分体中也以单亲遗传方式传递。单亲遗传传递可能不是衣藻物种中 cpDNA 的专有特性。
