改善农作物氮使用效率与产量Xiaorong Fana Zhong Tanga Yawen Tanab Yong Zhanga Bingbing Luobc Meng Yangd Xingming Liand Qirong Shenb Anthony John Millerc1 and Guohua Xuab1. Overexpression of a pH-sensitive nitrate transporter in rice increases crop yields. PNAS 2016