GMPOZ, a BTB/POZ Domain Nuclear Protein, is a Regulator of Hormone Responsive Gene Expression in Barley Aleurone | Zendy

Fiona J. Woodger | Zendy; John V. Jacobsen | Zendy; Frank Gubler | Zendy

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GMPOZ, a BTB/POZ Domain Nuclear Protein, is a Regulator of Hormone Responsive Gene Expression in Barley Aleurone

Author(s) -

Fiona J. Woodger,

John V. Jacobsen,

Frank Gubler

Publication year - 2004

Publication title -

plant and cell physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.975

H-Index - 152

eISSN - 1471-9053

pISSN - 0032-0781

DOI - 10.1093/pcp/pch100

Subject(s) - aleurone , gene expression , gene , regulation of gene expression , biology , activator (genetics) , gene silencing , microbiology and biotechnology , nuclear protein , regulator gene , transcription factor , genetics

GAMYB is a GA-responsive activator of hydrolase gene expression in the aleurone layer of germinated cereal grains. We have isolated a putative GAMYB-binding protein, GMPOZ, which contains a BTB/POZ domain found in certain animal transcriptional regulators. Although BTB/POZ domain proteins are numerous in plants, very few are yet characterized. We found that GMPOZ is nuclear localized and that GMPOZ mRNA is expressed highly in anthers as well as aleurone. Transient silencing of the GMPOZ gene suggests that GMPOZ is involved in hormone responsive gene expression in aleurone.

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