Multiple Trans-Sensing Interactions Affect Meiotically Heritable Epigenetic States at the Maize pl1 Locus

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Multiple trans-sensing interactions affect meiotically heritable epigenetic states at the maize pl1 locus.

Interactions between specific maize purple plant1 (pl1) alleles result in heritable changes of gene regulation that are manifested as differences in anthocyanin pigmentation. Transcriptionally repressed states of Pl1-Rhoades alleles (termed Pl') are remarkably stable and invariably facilitate heritable changes of highly expressed states (termed Pl-Rh) in Pl'/Pl-Rh plants. However, Pl' can rever...

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Paramutation generates heritable changes affecting regulation of specific alleles found at several Zea mays (maize) loci that encode transcriptional regulators of anthocyanin biosynthetic genes. Although the direction and extent of paramutation is influenced by poorly understood allelic interactions occurring in diploid sporophytes, two required to maintain repression loci (rmr1 and rmr2), as w...

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Epigenetic variation describes heritable differences that are not attributable to changes in DNA sequence. There is the potential for pure epigenetic variation that occurs in the absence of any genetic change or for more complex situations that involve both genetic and epigenetic differences. Methylation of cytosine residues provides one mechanism for the inheritance of epigenetic information. ...

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ژورنال

عنوان ژورنال: Genetics

سال: 2007

ISSN: 1943-2631

DOI: 10.1534/genetics.107.072496