The identification of new candidate genes Triticum aestivum FLOWERING LOCUS T3-B1 (TaFT3-B1 ) and TARGET OF EAT1 (TaTOE1-B1 ) controlling the short-day photoperiod response in bread wheat

Perception of photoperiod changes enables plants to flower under optimum conditions for survival. We used doubled haploid populations of crosses among Avalon × Cadenza, Charger × Badger and Spark × Rialto 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 thaliana SENSITIVITY TO RED LIGHT REDUCED 1, WUSCHEL‐like and RAP2.7, which is also known as Zea mays TARGET 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.

Data and Resources

Additional Info

Field Value
Author Zikhali, Meluleki
Last Updated August 7, 2019, 10:54 (UTC)
Created July 31, 2019, 16:31 (UTC)
Article Host Type publisher
Article Is Open Access true
Article License Type cc-by
Article Version Type publishedVersion
Citation Report https://scite.ai/reports/10.1111/pce.13018
DFW Organisation JIC
DFW Work Package 3
DOI 10.1111/pce.13018
Date Last Updated 2018-12-26T21:52:35.319824
Evidence open (via page says license)
Journal Is Open Access false
Open Access Status hybrid
PDF URL https://onlinelibrary.wiley.com/doi/pdf/10.1111/pce.13018
Publisher URL https://doi.org/10.1111/pce.13018