Journal Article

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

Gautier, Nadine, Badaeva, Ekaterina, Vavilov Inst Gen Genet ; Russian Academy of Sciences [Moscow] (RAS), Dobrovolskaya, Oxana, Pont, Caroline, Murat, Florent, Sibout, Richard, Agrotest Fyto Ltd, Watanabe, Nobuyoshi, Salina, Elena, Centre National de Ressources Génomiques Végétales (CNRGV) ; Institut National de la Recherche Agronomique (INRA), Génétique Diversité et Ecophysiologie des Céréales (GDEC) ; Institut National de la Recherche Agronomique (INRA)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP), Berges, Helene, Inst Cytol & Genet ; Russian Academy of Sciences [Moscow] (RAS), Krasnikov, Alexander A, Inst Cytol & Genet, Siberian Branch ; Russian Academy of Sciences [Moscow] (RAS), Poncet, Charles, Martinek, Petr, Prat, Elisa, Coll Agr ; Ibaraki University, Novosibirsk State University, Gautier, Véronique, Siberian Branch, Cent Siberian Bot Garden ; Russian Academy of Sciences [Moscow] (RAS), Chosson, Audrey, Laikova, Lyudmila, Institut Jean-Pierre Bourgin (IJPB) ; Institut National de la Recherche Agronomique (INRA)-AgroPari

2015

Overview

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.

• Publisher: Oxford University Press ; American Society of Plant Biologists,CCSD,American Society of Plant Biologists
• Subject: chromosomes / Flowers - genetics / Flowers - growth & development / Frameshift Mutation - genetics / Frameshift Mutation - physiology / Genes, Plant - genetics / Genes, Plant - physiology / Genetic Loci - genetics / inflorescences / Life Sciences / Phenotype / transcription (genetics) / transcription factors / Triticum - genetics / Triticum - growth & development / Triticum - physiology / wheat
• ISBN: 0003471703000