https://orcid.org/0000-0001-9168-7677
Figures & data
Figure 1. The simple pathway SnRK2s pathways involved in plant response to abiotic stress and SnRK2 kinases perform dual functions in plants adapted from Belda-Palazón et al. (2020). SnRK2s boost growth under optimal conditions. SnRK2s are involved in the formation of SnRK1 repressor complexes which also contain PP2Cs in the lack of ABA. SnRK1 sequestration in these complexes is critical for preventing SnRK1 from interacting with TOR and thus allowing growth while conditions are suitable. SnRK2s prevent the growth in response to stress. SnRK2 and PP2C-containing SnRK1 repressor complexes dismantle in the involvement of ABA via classical ABA signaling, which involves the sequestration of PP2Cs by ABA-bound PYR/PYL receptors.SnRK2s and SnRK1 are released when the complexes are disassembled, triggering stress responses and inhibiting growth. This is achieved in part through direct TOR suppression by SnRK1, but it is also possible that SnRK2 kinases are involved in the process.Inactive components are spotlighted in white, whereas active components are displayed in other colors.
