The Plasma Membrane Purinoreceptor P2K1/DORN1 Is Essential in Stomatal Closure Evoked by Extracellular Diadenosine Tetraphosphate (Ap₄A) in Arabidopsis thaliana.

ABSTRACT: Dinucleoside polyphosphates (Np_nNs) are considered novel signalling molecules involved in the induction of plant defence mechanisms. However, Np_nN signal recognition and transduction are still enigmatic. Therefore, the aim of our research was the identification of the Np_nN receptor and signal transduction pathways evoked by these nucleotides. Earlier, we proved that purine and pyrimidine Np_nNs differentially affect the phenylpropanoid pathway in Vitis vinifera suspension-cultured cells. Here, we report, for the first time, that both diadenosine tetraphosphate (Ap₄A) and dicytidine tetraphosphate (Cp₄C)-induced stomatal closure in Arabidopsis thaliana. Moreover, we showed that plasma membrane purinoreceptor P2K1

SUBMITTER: Dobrogojski J 

PROVIDER: S-EPMC10706190 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature