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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 6. — Auxin redistribution during Arabidopsis root gravity response. (A) A diagram illustrating the mature root with PIN-mediated auxin fluxes (marked by arrows) and resulting auxin accumulation (highlighted in green). Following gravistimulation, gravity-sensing statoliths sediment to the new bottom of columella cells, PIN3 relocates and mediates auxin flow downwards (yellow arrow) causing asymmetric auxin accumulation at the lower side of the root. (B) Root tips with auxin accumulation pattern indirectly marked by DR5rev::GFP before and after gravistimulation.