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GIBBERELLIN 3-OXIDASE genes regulate height and grain size in bread wheat.

Journal of experimental botany - 21 Aug 2025

Phillips Andrew L, Huttly Alison K, Alarcón-Reverte Rocío, Clark Suzanne J, Jaworek Pavel, Tarkowská Danuše, Sokolowska Patrycja, Steele David, Riche Andrew, Hawkesford Malcolm J, Thomas Stephen G, Hedden Peter, Pearce Stephen

Abstract excerpt

Plant gibberellin (GA) concentrations are tightly regulated to optimize growth and development. GA 3-oxidases (GA3OX) catalyse a key GA biosynthesis step, converting precursor GAs into bioactive forms. We characterized seven GA3OX homologues in bread wheat (Triticum aestivum L.): a homoeologous triad of GA3OX2 genes expressed in vegetative and reproductive tissues, and four others (a homoeologous triad of GA3OX3...

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PMID: 40208256
DOI: 10.1093/jxb/eraf151

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