Genes of both parental origins are differentially involved in early embryogenesis of a tobacco interspecies hybrid.

ABSTRACT:

Background

In animals, early embryonic development is largely dependent on maternal transcripts synthesized during gametogenesis. However, in higher plants, the extent of maternal control over zygote development and early embryogenesis is not fully understood yet. Nothing is known about the activity of the parental genomes during seed formation of interspecies hybrids.

Methodology/principal findings

Here, we report that an interspecies hybridization system between SR1 (Nicotiana tabacum) and Hamayan (N. rustica) has been successfully established. Based on the system we selected 58 genes that have polymorphic sites between SR1 and Hamayan, and analyzed the allele-specific expression of 28 genes in their hybrid zygotes (Hamayan x SR1). Finally the allele-specific expressions o

SUBMITTER: Zhang JE 

PROVIDER: S-EPMC3150392 | biostudies-literature | 2011

REPOSITORIES: biostudies-literature