This work was supported by the Chinese Academy of Science (grant no. KSCX3-YW-N-007), the Ministry of Science and Technology of China (grant no. 2012CBl14304), and the National Nature Science Foundation of China (grant no. 30830075).
Plant root system morphology is dramatically influenced by various environmental cues. The adaptation of root system architecture to environmental constraints, which mostly depends on the formation and growth of later...