Early Extracellular ATP Signaling in Arabidopsis Root Epidermis: A Multi-Conductance Process.

ABSTRACT: Adenosine 5'-triphosphate (ATP) is an important extracellular signaling agent, operating in growth regulation, stomatal conductance, and wound response. With the first receptor for extracellular ATP now identified in plants (P2K1/DORN1) and a plasma membrane NADPH oxidase revealed as its target, the search continues for the components of the signaling cascades they command. The Arabidopsis root elongation zone epidermal plasma membrane has recently been shown to contain cation transport pathways (channel conductances) that operate downstream of P2K1 and could contribute to extracellular ATP (eATP) signaling. Here, patch clamp electrophysiology has been used to delineate two further conductances from the root elongation zone epidermal plasma membrane that respond to eATP, including one that

SUBMITTER: Wang L 

PROVIDER: S-EPMC6737080 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature