Chloroplast DNA methylation and inheritance in Chlamydomonas
نویسندگان
چکیده
منابع مشابه
Differential methylation of chloroplast DNA regulates maternal inheritance in a methylated mutant of Chlamydomonas.
In Chlamydomonas, the maternal inheritance of chloroplast genes correlates with the differential methylation of chloroplast DNA (chlDNA) in females (mt(+)) but not in males (mt(-)). Our previous studies have supported our methylation-restriction model in which the maternal transmission is accounted for by the differential methylation in gametes which protects female but not male chlDNA from deg...
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The different metabolic paths followed by homologous chloroplast DNAs of maternal and paternal origins in zygotes of Chlamydomonas were examined by prelabeling parental cells, before mating them, with [3H]adenine, [3H]thymidine, and [3H]deoxycytidine. Within 6 hr after mating, maternal chloroplast DNA was extensively methylated to 5-methylcytosine and its bouyant density decreased. Paternal chl...
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We have used inhibitors of methylation to evaluate the proposal that the extent of methylation of chloroplast DNA ( cpDNA ) of the mating type-plus (mt+) parent occurring during gametogenesis in wild-type Chlamydomonas renhardtii is directly correlated with the uniparental transmission of chloroplast genes by this parent [ Sager , R., Grabowy , C. & Sano , H. (1981) Cell 24, 41-47]. As detected...
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The isogamous green alga Chlamydomonas reinhardtii has emerged as a premier model for studying the genetic regulation of fertilization and sexual development. A key regulator is known to be a homeoprotein gene, GAMETE-SPECIFIC PLUS1 (GSP1), which triggers the zygotic program. In this study, we isolated a mutant, biparental31 (bp31), which lacks GSP1. bp31 mt+ gametes fuse normally to form zygot...
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Genomic DNA contains not only information of DNA sequence, but also epigenetic information that is the direct DNA modification by methylation (the addition of methyl group to the 5th carbon of pyrimidine ring of cytosine) and histone modifications (acetylation, methylation, etc). Epigenetic information is closely related to regulation of gene expression. If a methyl group is dislocated to posit...
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ژورنال
عنوان ژورنال: Genes & Development
سال: 2001
ISSN: 0890-9369
DOI: 10.1101/gad.906701