The cold-regulated transcriptional activator Cbf3 is linked to the frost-tolerance locus Fr-A2 on wheat chromosome 5A.

ABSTRACT: Wheat chromosome 5A plays a key role in cold acclimation and frost tolerance. The major frost tolerance gene Fr-A1(formerly Fr1) and two loci that regulate the transcription of cold- regulated genes (Cor) have previously been mapped on the long arm of this chromosome. In this study we report the discovery of a new locus for frost tolerance designated Fr-A2. This new locus was mapped on the long arm of chromosome 5A of diploid wheat (T. monococcum), 40 cM from the centromere and 30 cM proximal to the major frost tolerance locus Fr-A1. We found also that frost-tolerant and frost-susceptible T. monococcum parental lines differed in the transcription level of the cold induced gene Cor14b when plants were grown at 15 degrees C. Transcription levels of this gene were measured in each of the reco

SUBMITTER: Vagujfalvi A 

PROVIDER: S-EPMC4743881 | biostudies-literature | 2003 Apr

REPOSITORIES: biostudies-literature