Wheat hybridization and polyploidization results in deregulation of small RNAs.

ABSTRACT: Speciation via interspecific or intergeneric hybridization and polyploidization triggers genomic responses involving genetic and epigenetic alterations. Such modifications may be induced by small RNAs, which affect key cellular processes, including gene expression, chromatin structure, cytosine methylation and transposable element (TE) activity. To date, the role of small RNAs in the context of wide hybridization and polyploidization has received little attention. In this work, we performed high-throughput sequencing of small RNAs of parental, intergeneric hybrid, and allopolyploid plants that mimic the genomic changes occurring during bread wheat speciation. We found that the percentage of small RNAs corresponding to miRNAs increased with ploidy level, while the percentage of siRNAs corre

SUBMITTER: Kenan-Eichler M 

PROVIDER: S-EPMC3122319 | biostudies-literature | 2011 Jun

REPOSITORIES: biostudies-literature