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. 2016 Oct 7;12(10):e1006360. doi: 10.1371/journal.pgen.1006360

Fig 12. A Working model of YUC regulated root growth inhibition in response to Al stress.

Fig 12

Al stress induces the local up-regulation of TAA1 and YUCs in the root TZ through an ethylene-dependent pathway. PIF4, which is specifically up-regulated in root TZ in response to Al stress, also participates into the local up-regulation of YUCs. The Al–induced expression of PIF4 in the root TZ acts downstream of ethylene signaling. The locally induced TAA1 and YUCs in response to Al stress contribute to auxin accumulation in the root TZ, which suppresses primary root growth. Green represents GFP signaling; EZ: Elongation zone; TZ: Transition zone; MZ: Meristem zone.