Wenping Zhang1,2, Guangyao Zhao2, Lifeng Gao2, Xiuying Kong2, Zhiai Guo2, Bihua Wu1* and Jizeng Jia2*
1Triticease Research Institute, Sichuan Agricultural University, Chengdu, China
2National Key Facility of Crop Gene Resources and Genetic Improvement, Institute of Crop science, Chinese Academy of Agricultural Sciences, Beijing, China
Front. Plant Sci., 01 June 2016 （Please read online by using this link） http://dx.doi.org/10.3389/fpls.2016.00772
ABSTRACT
Photoperiod response-related genes play a crucial role in duration of the plant growth. In this study, we focused on TaPRR73, a paralog of “Green Revolution” gene Ppd1 (TaPRR37). We found that overexpression of the truncated TaPRR73 form lacking part of the N-terminal PR domain in transgenic rice promoted heading under long day conditions. Association analysis in common wheat verified that TaPRR73 was an important agronomic photoperiod response gene that significantly affected heading date and plant height; expression analysis proved that specific alleles of TaPRR73-A1 had highly expressed levels in earlier heading lines; the distribution of haplotypes indicated that one of these alleles had been selected in breeding programs. Our results demonstrated that TaPRR73 contributed to regulation of heading date in wheat and could be useful in wheat breeding and in broadening adaptation of the crop to new regions.
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