AUTHOR=Zhang Wenping , Zhao Guangyao , Gao Lifeng , Kong Xiuying , Guo Zhiai , Wu Bihua , Jia Jizeng 

TITLE=Functional Studies of Heading Date-Related Gene TaPRR73, a Paralog of Ppd1 in Common Wheat

JOURNAL=Frontiers in Plant Science

VOLUME=7

YEAR=2016

URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2016.00772

DOI=10.3389/fpls.2016.00772

ISSN=1664-462X

ABSTRACT=<p>Photoperiod response-related genes play a crucial role in duration of the plant growth. In this study, we focused on <italic>TaPRR73</italic>, a paralog of “Green Revolution” gene <italic>Ppd1</italic> (<italic>TaPRR37</italic>). We found that overexpression of the truncated <italic>TaPRR73</italic> 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 <italic>TaPRR73</italic> was an important agronomic photoperiod response gene that significantly affected heading date and plant height; expression analysis proved that specific alleles of <italic>TaPRR73-A1</italic> 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 <italic>TaPRR73</italic> 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.</p>