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FRIZZY PANICLE Drives Supernumerary Spikelets in Bread Wheat

Overview
Journal Plant Physiol
Specialty Physiology
Date 2014 Nov 16
PMID 25398545
Citations 76
Authors
Oxana Dobrovolskaya
Caroline Pont
Richard Sibout
Petr Martinek
Ekaterina Badaeva
Florent Murat
Audrey Chosson
Nobuyoshi Watanabe
Elisa Prat
Nadine Gautier
Veronique Gautier
Charles Poncet
Yuriy L Orlov
Alexander A Krasnikov
Helene Berges
Elena Salina
Lyudmila Laikova
Jerome Salse
Affiliations
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Abstract

Bread wheat (Triticum aestivum) inflorescences, or spikes, are characteristically unbranched and normally bear one spikelet per rachis node. Wheat mutants on which supernumerary spikelets (SSs) 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 (FZP) gene, encoding a member of the APETALA2/Ethylene Response Factor transcription factor family, which drives the SS trait in bread wheat. Structural and functional characterization of the three wheat FZP 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.

Citing Articles

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Evaluation of the Spike Diversity of Seven Hexaploid Wheat Species and an Artificial Amphidiploid Using a Quadrangle Model Obtained from 2D Images.

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Identification, validation and candidate gene analysis of major QTL for Supernumerary spikelets in wheat.

Wang Z, Li H, Zhou X, Mou Y, Zhang Y, Yu L BMC Genomics. 2024; 25(1):675.

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Identification and validation of two major QTL for grain number per spike on chromosomes 2B and 2D in bread wheat (Triticum aestivum L.).

Liao S, Xu Z, Fan X, Zhou Q, Liu X, Jiang C Theor Appl Genet. 2024; 137(7):147.

PMID: 38834870 DOI: 10.1007/s00122-024-04652-7.

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