ISSN:
1432-0983
Keywords:
Key words Zygote-specific genes
;
Chlamydomonas reinhardtii
;
Uniparental inheritance
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Uniparental inheritance of the chloroplast genome has been observed in a wide variety of green plants. In Chlamydomonas this phenomenon, which can be selectively inhibited by UV irradiation of mt + gametes, has been shown cytologically to be due to the preferential degradation of mt −-derived chloroplast nucleoids in young zygotes. The zygote-specific pair of zys1 genes, zys1A and zys1B, is expressed earliest among five genes isolated from a “10-min” zygote library. We report here that the ZYS1 protein, which is encoded by the invertedly duplicated zys1 gene, accumulates in zygotes and is localized in nuclei. In addition, when mt + gametes (but not mt − gametes) are UV-irradiated before mating, only very limited accumulation of ZYS1 protein can be detected in the resulting zygotes.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s002940050495
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