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. 2019 Jul 30;181(2):399–411. doi: 10.1104/pp.19.00652

Figure 2.

Figure 2.

Organ-specific perception of high temperature and subsequent auxin distribution and downstream signaling. At high temperature, auxin moves from the leaf blade through the petiole toward the hypocotyl. In the latter organ, auxin promotes BR-mediated growth. In the petiole, PIF4 controls PID expression, which impacts phosphorylation-mediated PIN3 localization to control auxin efflux and cell elongation.