Cooperation between nitrogen assimilation and photosynthesis is central for plant growth and development in adaption to changing environmental conditions. This work reveals that the plant energy sensor SnRK1 represses nitrate signalling by phosphorylating NODULE INCEPTION PROTEIN-LIKE PROTEIN (NLP7) to promote its degradation in response to carbon deficiency or nitrate depletion.
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Fichtner, F., Dissanayake, I. M., Lacombe, B. & Barbier, F. Sugar and nitrate sensing: a multi-billion-year story. Trends Plant Sci. 26, 352–374 (2021). This review gives an overview of the basics and evolution of sugar and nitrate signalling, including of the direct and indirect links between these two ancient signalling pathways.
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This is a summary of: Wang, H. et al. Regulatory functions of cellular energy sensor SnRK1 for nitrate signalling through NLP7 repression. Nat. Plants https://doi.org/10.1038/s41477-022-01236-5 (2022).
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SnRK1 connects photosynthesis and nitrate signalling. Nat. Plants 8, 992–993 (2022). https://doi.org/10.1038/s41477-022-01241-8