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.
journal_name
Geneticsjournal_title
Geneticsauthors
Pankin A,Campoli C,Dong X,Kilian B,Sharma R,Himmelbach A,Saini R,Davis SJ,Stein N,Schneeberger K,von Korff Mdoi
10.1534/genetics.114.165613subject
Has Abstractpub_date
2014-09-01 00:00:00pages
383-96issue
1eissn
0016-6731issn
1943-2631pii
genetics.114.165613journal_volume
198pub_type
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