FRIZZY PANICLE Drives Supernumerary Spikelets in Bread Wheat
FRIZZY PANICLE Drives Supernumerary Spikelets in Bread Wheat
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DOI：
10.1104/pp.114.250043
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发表时间：
2015-01-01
期刊：
影响因子：
7.4
通讯作者：
Salse, Jerome
中科院分区：
文献类型：
--
作者：
Dobrovolskaya, Oxana;Pont, Caroline;Salse, Jerome
面包小麦（Triticum aestivum）的花序或穗状花序的特征是不分枝，通常每个轴节上有一个小穗。额外小穗（SS）的小麦突变体的发展是特别有用的资源，对理解小麦花序结构的遗传机制，并最终，产量构成因素的工作。在这里，我们报告的表征基因无关的突变体导致小麦FRIZZY PANICLE（FZP）基因的鉴定，编码的APETALA 2/乙烯反应因子转录因子家族的成员，驱动面包小麦中的SS性状。三个小麦FZP同源异型基因（WFZP）的结构和功能表征表明，WFZP-D的编码突变导致SS表型，当WFZP-D病变与WFZP-A的移码突变相结合时，影响最严重。我们提供了WFZP为基础的资源，可能是有用的遗传操作的目的是提高面包小麦产量，增加粒数。
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.