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. 2020 Jan 29;71(8):2412–2427. doi: 10.1093/jxb/eraa048

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© The Author(s) 2020. Published by Oxford University Press on behalf of the Society for Experimental Biology.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 2. — Model of the molecular and hormonal pathway for root hair development. Hormones stimulating root hair growth are shown in green, those repressing are shown in red. Root tip is at the left side in the schematic longitudinal section through a single epidermal cell layer with consecutive root hair developmental phases. ARF5/7/19, AUXIN RESPONSE FACTOR 5/7/19; BIN2, BRASSINOSTEROID-INSENSITIVE 2; CPC, CAPRICE; EGL3, ENHANCER OF GLABRA 3; EIN3, ETHYLENE INSENSITIVE 3; EIL1, ETHYLENE INSENSITIVE 3-LIKE 1; ETC1, ENHANCER OF TRY AND CPC1; GL2/3, GLABRA2/3; OBP4, OBF BINDING PROTEIN 4; RHD6, ROOT HAIR DEFECTIVE 6; RSL1–4, ROOT HAIR DEFECTIVE 6-LIKE 1–4; TRY, TRYPTICHON; TTG1, TRANSPARENT TESTA GLABRA 1; WER, WEREWOLF; ZFP5, ZINC FINGER PROTEIN 5.