Promoter analysis of the sweet potato ADP-glucose pyrophosphorylase gene IbAGP1 in Nicotiana tabacum - Xuelian Zheng; Qian Li; Dongqing Liu; Lili Zang; Kaiyue Zhang; Kejun Deng; Shixin Yang; Zhengyang Xie; Xu Tang; Yiping Qi; Yong Zhang (Plant Cell Reports, 2015)