Asymmetric gene expression in grain development of reciprocal crosses between tetraploid and hexaploid wheats.

ABSTRACT: Production of viable progeny from interploid crosses requires precise regulation of gene expression from maternal and paternal chromosomes, yet the transcripts contributed to hybrid seeds from polyploid parent species have rarely been explored. To investigate the genome-wide maternal and paternal contributions to polyploid grain development, we analyzed the transcriptomes of developing embryos, from zygote to maturity, alongside endosperm in two stages of development, using reciprocal crosses between tetraploid and hexaploid wheats. Reciprocal crosses between species with varied levels of ploidy displayed broad impacts on gene expression, including shifts in alternative splicing events in select crosses, as illustrated by active splicing events, enhanced protein synthesis and chromatin rem

SUBMITTER: Jia Z 

PROVIDER: S-EPMC9789062 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature