Study : Diospyros lotus Transcriptome or Gene expression
Identification
Name
Diospyros lotus Transcriptome or Gene expression
Identifier
dXJuOkVWQS9zdHVkeS9QUkpOQTI2MTMzOQ==
Source
Description
In plants, multiple lineages have evolved sex chromosomes independently, providing a powerful comparative framework, but few specific determinants controlling the expression of a specific sex have been identified. We investigated sex-determinants in Caucasian persimmon, Diospyros lotus, a dioecious plant with heterogametic males (XY). Male-specific short nucleotide sequences were used to define a male determining region. A combination of transcriptomics and evolutionary approaches detected a Y-specific sex-determinant candidate, OGI, that displays male-specific conservation among Diospyros species. OGI encodes a small RNA targeting the autosomal MeGI gene, a homeodomain transcription factor regulating anther fertility in dosage-dependent fashion. This identification of a feminizing gene suppressed by a Y-chromosome-encoded small RNA contributes to our understanding of the evolution of sex chromosome systems in higher plants. Overall design: For expression analyses, mixed buds were sampled on June 17, and July 4, 2013, corresponding to the early differentiation stages of male/female primordia, respectively.
Genotype
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