Evidence for multiple receptors mediating RALF‐triggered Ca2+ signaling and proton pump inhibition

• Published in: The Plant journal : for cell and molecular biology Vol. 104; no. 2; pp. 433 - 446
• Main Authors: Gjetting, Sisse K., Mahmood, Khalid, Shabala, Lana, Kristensen, Astrid, Shabala, Sergey, Palmgren, Michael, Fuglsang, Anja T.
• Format: Journal Article
• Language: English
• Published: Oxford Blackwell Publishing Ltd 01.10.2020
• Subjects: Acidification; Adenosine triphosphatase; alkalinization; apoplast; apoplastic pH; Arabidopsis thaliana; Ca2+/H+-exchanging ATPase; calcium; Calcium (intracellular); Calcium ions; Calcium signalling; cell elongation; Cell walls; FERONIA; Glycopeptides; Hydrogen; Loosening; Membranes; Mutants; Peptides; plasma membrane; proton pump; PSY1 peptide; receptor kinase; Receptors; Roots; signaling pathway; Signatures; Transcription; Tyrosine

SUMMARY Acidification of the apoplastic space facilitates cell wall loosening and is therefore a key step in cell expansion. PSY1 is a growth‐promoting secreted tyrosine‐sulfated glycopeptide whose receptor directly phosphorylates and activates the plasma membrane H+‐ATPase, which results in acidifi...