http://www.nature.com/nature/journal/v437/n7055/full/nature04062.html

Brief Communications Arising

BCA1 = pcp103

Abed Chaudhury. Plant genetics: Hothead healer and extragenomic information // Nature 437, E1 (1 September 2005).

doi:10.1038/nature04062; Published online 31 August 2005

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Brief Communications Arising

Nature 437, E1 (1 September 2005) | doi:10.1038/nature04062; Published online 31 August 2005

Plant genetics: Hothead healer and extragenomic information

Abed Chaudhury

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Arising from: S. J. Lolle, J. L. Victor, J. M. Young & R. E. Pruitt Nature 434, 505–509 (2005); see also communication from Ray; Lolle et al. reply.

Lolle et al. suggest that non-mendelian inheritance in Arabidopsis thaliana might be attributable to an ancestral RNA-sequence cache [pcp101], whereby the RNA genome of previous generations causes a high rate of reversion of the plant's mutant hothead (hth) and erecta (er) genes. Here I describe a ‘distributed genome’ model that also explains their results, in which mutant hth DNA is restored by homologous sequences present in the genome itself. This model has implications for the generation of diversity without mating.