Mating-type differentiation and mate selection in the homothallic Chlamydomonas monoica

The Search for Mating-Type-Limited Genes in the Homothallic Alga CHLAMYDOMONAS MONOICA.

The non-Mendelian erythromycin resistance mutation ery-u1 shows bidirectional uniparental inheritance in crosses between homothallic ery-u1 and ery-u1(+) strains of Chlamydomonas monoica . This inheritance pattern supports a general model for homothallism invoking intrastrain differentiation into opposite compatible mating types and, further, suggests that non-Mendelian inheritance is under mat...

Complementation and Preliminary Linkage Analysis of Zygote Maturation Mutants of the Homothallic Alga, CHLAMYDOMONAS MONOICA.

Sexual reproduction in Chlamydomonas monoica is homothallic: pair formation and cell fusion occur in clonal culture and give rise to a heavily walled diploid zygospore. During maturation of the young zygote, a distinctive "primary zygote wall" is released before the development of the highly reticulate zygospore wall. Using ethyl methanesulfonate and ultraviolet irradiation as mutagens, we have...

Genetic mating system and mate selection in smallmouth bass

Mating systems are an important factor influencing the variance in reproductive success among individuals within natural populations and thus have important ecological and evolutionary implications. We used molecular pedigree reconstruction techniques with microsatellite DNA data to characterize the genetic mating system and mate selection in adult smallmouth bass spawning in Lake Opeongo. The ...

The unusual sexual preferences of a chlamydomonas mutant may provide insight into mating-type evolution.

Chlamydomonas monoica undergoes intraclonal mating-type differentiation (homothallism). Although the species differs in this regard from the more commonly studied heterothallic C. reinhardtii, cell-cell interactions and progression of the sexual cycle are similar for many homothallic and heterothallic species of the genus. Regulation of chloroplast gene transmission by the nuclear mating-type a...

PCR-based assay for mating type and diploidy in Chlamydomonas.