Fig. 5.
Expression levels of ABA biosynthesis-related genes. The relative expression levels of OsNCED1 (a), OsNCED3 (b), OsABA2 (c), and OsZEP1 (d) were assessed using RT-qPCR with leaves at the tillering stage. The data were normalized using the rice UBI gene and are shown relative to WT. Error bars represent SD of three biological replicates. ** P < 0.01 (t-test)