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. 2007 Aug 21;5:e0108. doi: 10.1199/tab.0108

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© 2007 American Society of Plant Biologists

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Figure 8. — Possible feedback regulations in the generation of auxin distribution. PIN-based auxin transport (depending on PIN levels, cellular localization and activity) mediates asymmetric local auxin distribution. Auxin accumulation within cells is interpreted by cellular auxin signaling and translated into a given developmental response. Auxin feedback regulates its own transport at the levels of PIN transcription, PIN stability and PIN localization. In addition, cell type-based determinants influence PIN expression and polar localization. Adapted from Tanaka et al (2006).