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Article Dans Une Revue Plant Physiology Année : 2015

FRIZZY PANICLE drives supernumerary spikelets in bread wheat (T. aestivum L.)

Richard Sibout
Petr Martinek
  • Fonction : Auteur
Nobuyoshi Watanabe
  • Fonction : Auteur

Résumé

Bread wheat inflorescences, or spikes, are characteristically unbranched and normally bear one spikelet per rachis node. Wheat mutants on which supernumerary spikelets (SS) develop are particularly useful resources for work towards understanding the genetic mechanisms underlying wheat inflorescence architecture and, ultimately, yield components. Here, we report the characterization of genetically unrelated mutants leading to the identification of the wheat FRIZZY PANICLE gene, encoding a member of the APETALA2/Ethylene Response Factor (AP2/ERF) transcription factor family, which drives the SS trait in bread wheat. Structural and functional characterization of the three wheat FRIZZY PANICLE homoeologous genes (WFZP) revealed that coding mutations of WFZP-D cause the SS phenotype with the most severe effect when WFZP-D lesions are combined with a frameshift mutation in WFZP-A. We provide WFZP-based resources that may be useful for genetic manipulations with the aim of improving bread wheat yield by increasing grain number.

Dates et versions

hal-01204099 , version 1 (23-09-2015)

Identifiants

Citer

Oxana Dobrovolskaya, Caroline Pont, Richard Sibout, Petr Martinek, Ekaterina Badaeva, et al.. FRIZZY PANICLE drives supernumerary spikelets in bread wheat (T. aestivum L.). Plant Physiology, 2015, 167 (1), pp.189-199. ⟨10.1104/pp.114.250043⟩. ⟨hal-01204099⟩
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