Research advances on SnRK1 regulating carbon and nitrogen metabolism in plants
The immobile lifestyle of plants determines their strong environmental adaptability.There-fore,plants need to continuously modulate their metabolism to adapt to different light conditions.Sucrose non-fermenting 1-related protein kinase 1(SnRK1)in plant cells can be activated by energy stress in plants,regulating a series of biochemical reactions of carbon and nitrogen metabolism to adapt to energy stress.This review systematically summarizes the metabolic pathways regulated by SnRK1 under energy stress conditions through transcriptional regulation and post-translational phos-phorylation modification,and concludes the general rules of SnRK1 function for carbon and nitrogen metabolism,including SnRK1 inhibits sucrose synthesis and photosynthetic efficiency;SnRK1 repres-ses nitrogen assimilation and nitrogen signal transduction,coordinating a carbon and nitrogen balance;SnRK1 promotes gluconeogenesis to maintain sugar metabolism homeostasis;as well as,SnRK1 pro-motes autophagy and amino acid oxidation metabolism.These summarized results indicate that SnRK1 is the core regulatory element of plant carbon and nitrogen metabolism regulation,which will be a use-ful reference for functional analysis of SnRK1 in crops.
SnRK1carbon and nitrogen metabolismnitrogen assimilation
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