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First published online October 14, 2004

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Mixing and matching plant Polycomb genes

In animals, Polycomb group (Pc-G) genes mediate the epigenetic control of developmental patterning, ensuring that gene expression patterns established in early development are stably inherited through somatic development. Now Chanvivattana and co-workers report that the Pc-G protein complexes that control flowering in plants are similar to the Polycomb Repressive Complex 2 (PRC2) in animals, which functions as a histone methyltransferase (see p. 5263). The researchers show that the Arabidopsis Pc-G genes EMBRYONIC FLOWER2 (EMF2) and CURLY LEAF (CLF) interact genetically and, importantly, that their protein products physically interact through domains that are conserved in their animal homologues. The CLF-related protein SWINGER and CLF both also interact with two other EMF2-related Pc-G proteins. From these findings, the researchers conclude that PRC2 has been conserved in plants and animals, but that gene duplication and divergence has produced several different flavours of this complex in plants.

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Related articles in Development:

Interaction of Polycomb-group proteins controlling flowering in Arabidopsis

Yindee Chanvivattana, Anthony Bishopp, Daniel Schubert, Christine Stock, Yong-Hwan Moon, Z. Renee Sung, and Justin Goodrich
Development 2004 131: 5263-5276. [Abstract] [Full Text]  

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Related articles in Development Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Search for Related Content Social Bookmarking                         What's this?