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. 1974 Dec;71(12):4698–4702. doi: 10.1073/pnas.71.12.4698

Mutations That Alter the Transmission of Chloroplast Genes in Chlamydomonas

Ruth Sager 1, Zenta Ramanis 1
PMCID: PMC433963  PMID: 4531010

Abstract

Two mutations are described that alter the pattern of inheritance of chloroplast genes in Chlamydomonas. The mutant gene mat-1 linked to the mating type allele mt- greatly increases the frequency of exceptional zygotes, i.e., zygotes that transmit chloroplast genes from the mt- (male) parent. In some crosses, 80-90% of the zygotes are biparental, transmitting chloroplast genes from both parents. The mat-2 mutation, linked to mt+, acts to decrease the frequency of exceptional zygotes below the spontaneous level. The mutant effects are discussed in terms of a DNA modification-restriction system, postulated to regulate the transmission of chloroplast DNA in zygotes.

Keywords: maternal inheritance, cytoplasmic DNA, modification-restriction

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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