Environmental Programming of Heritable Epigenetic Changes in Paramutant R-Gene Expression Using Temperature and Light at a Specific Stage of Early Development in Maize Seedlings
AUTOR(ES)
Mikula, B. C.
RESUMO
Different heritable expression-states were programmed into R alleles from R/R-lst heterozygotes under different temperature conditions applied during a developmental period in which flowering is induced. At maturity, R-allele expressions in test crosses of male gametes derived from R/R-lst seedlings raised 15 days in 32° and continuous light conditions differed significantly from those of sib seedlings raised for 15 days in 22° and continuous light conditions and shifted to six 12-hr light-dark cycles, days 16-21. This experiment provides the first evidence in higher organisms that environmental conditions, applied at a specific stage of development cause a heritable change in a specific allele expression. My earlier evidence required a statistical analysis for demonstrating heritable change; I present photographic evidence of this environmental effect on four R alleles.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1206701Documentos Relacionados
- Derepression in the Female Gametophyte in Relation to Paramutant R Expression in Maize Endosperms, Embryos, and Seedlings
- Heritable Changes in R-Locus Expression in Maize in Response to Environment
- Locus Dependence of the Paramutant R Phenotype in Maize
- Specific DNA Alterations Associated with the Environmental Induction of Heritable Changes in Flax
- Cell-Specific Expression of Mitochondrial Transcripts in Maize Seedlings.
