Journal Article

<i>carpel</i>, a New <i>Arabidopsis</i> Epi-Mutant of the <i>SUPERMAN</i> Gene: Phenotypic Analysis and DNA Methylation Status

Antje Rohde, Christoph Grunau, De Lode Beck, Marc Van Montagu, André Rosenthal and Wout Boerjan

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 40, issue 9, pages 961-972
Published in print January 1999 | ISSN: 0032-0781
Published online January 1999 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/oxfordjournals.pcp.a029629
carpel, a New Arabidopsis Epi-Mutant of the SUPERMAN Gene: Phenotypic Analysis and DNA Methylation Status

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The carpel (car) mutation affects the morphology of reproductive organs in Arabidopsis thaliana. car flowers have an increased number of carpels, on average 2.7±0.8 instead of two in the wild type. Through allelism test with fon1-3 and analysis of the methylation state of the SUPERMAN (SUP) gene in car mutants, we show that car is an epi-mutation of SUP. The methylation pattern of car is clearly distinct from that of fon1-3, another epimutation of the SUP gene. Methylation was found predominantly in Cp(A/T)p(A/G) triplets and in CpG pairs. We suggest that the extensive SUP methylation in car has arisen from an abundant methylation of a single CpG site that was already present in abscisic acid-insensitive (abi3-4) mutants, from which car was segregating.

Keywords: DNA methylation; Epi-mutant; SUPERMAN

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Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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