Genome-wide association studies and expression-based quantitative trait loci analyses reveal roles of HCT2 in caffeoylquinic acid biosynthesis and its regulation by defense-responsive transcription factors in Populus

Zhang, Jin; Yang, Yongil; Zheng, Kaijie; Xie, Meng; Feng, Kai; Jawdy, Sara S.; Gunter, Lee E.; Ranjan, Priya; Singan, Vasanth R.; Engle, Nancy; Lindquist, Erika; Barry, Kerrie; Schmutz, Jeremy; Zhao, Nan; Tschaplinski, Timothy J.; LeBoldus, Jared; Tuskan, Gerald A.; Chen, Jin-Gui; Muchero, Wellington