Paramutation in Plants
Mario A. Arteaga-Vazquez and Ana E. Dorantes-Acosta
from: Epigenetics: A Reference Manual (Edited by: Jeffrey M. Craig and Nicholas C. Wong). Caister Academic Press, U.K. (2011)
Paramutation is a fascinating phenomenon in which epigenetic information can be transmitted through trans-interactions between one allele of a gene to another allele or between homologous DNA sequences that establishes a state of gene expression that is heritable for generations. Paramutation was discovered in maize and similar phenomena have been described in other plants, fungi and animals. In this chapter, we describe several classic plant paramutation systems and discuss recent advances that implicate a role for RNA and a number of components of an RNA-based transcriptional silencing pathway on paramutation read more ...