Revisiting the role of delta-1-pyrroline-5-carboxylate synthetase in drought-tolerant crop breeding oleh Xuanjun Feng, Yue Hu, Weixiao Zhang, Rongqian Xie, Huarui Guan, Hao Xiong, Li Jia, Xuemei Zhang, Hanmei Zhou, Dan Zheng, Ying Wen, Qingjun Wang, Fengkai Wu, Jie Xu, Yanli Lu