Publication Date:
2014-11-02
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 the 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 a 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.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Akagi, Takashi -- Henry, Isabelle M -- Tao, Ryutaro -- Comai, Luca -- New York, N.Y. -- Science. 2014 Oct 31;346(6209):646-50. doi: 10.1126/science.1257225. Epub 2014 Oct 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Plant Biology and Genome Center, University of California Davis, Davis, CA, USA. Laboratory of Pomology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan. ; Department of Plant Biology and Genome Center, University of California Davis, Davis, CA, USA. ; Laboratory of Pomology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan. rtao@kais.kyoto-u.ac.jp lcomai@ucdavis.edu. ; Department of Plant Biology and Genome Center, University of California Davis, Davis, CA, USA. rtao@kais.kyoto-u.ac.jp lcomai@ucdavis.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25359977" target="_blank"〉PubMed〈/a〉
Keywords:
Base Sequence
;
Chromosomes, Plant/*genetics
;
Diospyros/*genetics/*physiology
;
Molecular Sequence Data
;
RNA, Plant/genetics/*physiology
;
RNA, Small Interfering/genetics/*physiology
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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