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. 2017 Dec 22;69(3):619–631. doi: 10.1093/jxb/erx423

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© The Author(s) 2017. 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. 7. — Model for regulation of flowering time by nitrate in Arabidopsis thaliana. A nitrate signal, sensed by the NPF6.3/NRT1.1 transceptor, represses a gibberellin signaling pathway that in time causes an early induction of SMZ and SNZ. Induction of SMZ and SNZ leads to early repression of the floral integrator FT, and a delay of flowering time. This model summarizes our results in a naive lineal model. However, it does not preclude multiple entries stemming from upstream signaling components (e.g. NRT1.1) over the effectors and, similarly, feedback regulation by effectors (e.g. GA pathway) towards upstream components. Dashed lines denote likely indirect regulation. The link between DELLA and the effectors GNC-CGA1/GNL is indirect and has been previously described (Richter et al., 2010).