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- Title
Mapping-by-Sequencing Identifies HvPHYTOCHROME C as a Candidate Gene for the early maturity 5 Locus Modulating the Circadian Clock and Photoperiodic Flowering in Barley.
- Authors
Pankin, Artem; Campoli, Chiara; Xue Dong; Kilian, Benjamin; Sharma, Rajiv; Himmelbach, Axel; Saini, Reena; Davis, Seth J.; Stein, Nils; Schneeberger, Korbinian; von Korff, Maria
- Abstract
Phytochromes play an important role in light signaling and photoperiodic control of flowering time in plants. Here we propose that the red/far-red light photoreceptor HvPHYTOCHROME C (HvPHYC), carrying a mutation in a conserved region of the GAF domain, is a candidate underlying the early maturity 5 locus in barley (Hordeum vulgare L.). We fine mapped the gene using a mapping-by-sequencing approach applied on the whole-exome capture data from bulked early flowering segregants derived from a backcross of the Bowman(eam5) introgression line. We demonstrate that eam5 disrupts circadian expression of clock genes. Moreover, it interacts with the major photoperiod response gene Ppd-H1 to accelerate flowering under noninductive short days. Our results suggest that HvPHYC participates in transmission of light signals to the circadian clock and thus modulates light-dependent processes such as photoperiodic regulation of flowering.
- Subjects
GENETIC research; PLANT genetics; PHYTOCHROME genetics; FLOWERING time; BARLEY genetics; GENE mapping
- Publication
Genetics, 2014, Vol 198, Issue 1, p383
- ISSN
0016-6731
- Publication type
Article
- DOI
10.1534/genetics.114.165613