期刊
PLANT CELL AND ENVIRONMENT
卷 40, 期 11, 页码 2678-2690出版社
WILEY
DOI: 10.1111/pce.13018
关键词
Brachypodium distachyon; GEDIFLUX; Watkins; Zea mays
资金
- European Union Seventh Framework Programme (FP7) [289842]
- Genetic Diversity and Yield Stability for Increased Resilience Against Climate Change in the UK [BB/H012176/1]
- John Innes Foundation
- John Innes Centre
- Sainsbury Laboratory
- BBSRC [BBS/E/J/000PR9781, BB/L027127/1, BBS/E/J/000CA471, BBS/E/C/000I0280, BBS/E/J/000PR9779, BBS/E/J/000C0617, BBS/E/J/000CA393] Funding Source: UKRI
- Biotechnology and Biological Sciences Research Council [BBS/E/J/000C0617, BBS/E/J/000PR9781, BB/L027127/1, BBS/E/J/000CA393, BBS/E/J/000PR9779, BBS/E/J/000CA471] Funding Source: researchfish
Perception of photoperiod changes enables plants to flower under optimum conditions for survival. We used doubled haploid populations of crosses among AvalonxCadenza, ChargerxBadger and SparkxRialto and identified short-day flowering time response quantitative trait loci (QTL) on wheat chromosomes 1BS and 1BL. We used synteny between Brachypodium distachyon and wheat to identify potential candidates for both QTL. The 1BL QTL peak coincided with TaFT3-B1, a homologue of the barley gene HvFT3, the most likely candidate gene. The 1BS QTL peak coincided with homologues of Arabidopsis thalianaSENSITIVITY TORED LIGHTREDUCED 1, WUSCHEL-like and RAP2.7, which is also known as Zea maysTARGET OF EAT1, named TaSRR1-B1, TaWUSCHELL-B1 and TaTOE1-B1, respectively. Gene expression assays suggest that TaTOE1-B1 and TaFT3-B1 are expressed more during short days. We identified four alleles of TaFT3-B1 and three alleles of TaTOE1-B1. We studied the effect of these alleles in the Watkins and GEDIFLUX diversity panels by using 936 and 431 accessions, respectively. Loss of TaFT3-B1 by deletion was associated with late flowering. Increased TaFT3-B1 copy number was associated with early flowering, suggesting that TaFT3-B1 promotes flowering. Significant association was observed in the GEDIFLUX collection for TaTOE1-B1, a putative flowering repressor.
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