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Bach, M. ; Schnitzler, J.-P. ; Seitz, H.-U.

Elicitor-induced Changes of Ca2+, Influx, K+ Efflux, and 4-hydroxybenzoic Acid Synthesis in Protoplasts of Daucus Carota L.

Plant Physiol. 103, 407-412 (1993)
Open Access Green as soon as Postprint is submitted to ZB.
Suspension-cultured carrot cells (Daucus carota) and their protoplasts respond to a fungal elicitor prepared from the culture medium of Pythium aphanidermatum by accumulating 4-hydroxybenzoic acid (4-HBA). Protoplasts release the compound into the culture medium. Using 45CaCl2 as a tracer, we were able to demonstrate that the secretion of 4-HBA is preceded by a rapid increase in the Ca2+ influx and a concomitant K+ efflux. If the increased Ca2+ influx was prevented by ethyleneglycol-bis([beta]-aminoethylether)-N,N[prime]-tetraacetic acid, 4-HBA synthesis was inhibited by 70%. These results are discussed with regard to signal transduction from the plasma membrane to the nucleus of carrot protoplasts.
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Publication type Article: Journal article
Document type Scientific Article
ISSN (print) / ISBN 0032-0889
e-ISSN 1532-2548
Journal Plant Physiology
Quellenangaben Volume: 103, Issue: 2, Pages: 407-412 Article Number: , Supplement: ,
Publisher American Society of Plant Biologists (ASPB)
Reviewing status Peer reviewed
Institute(s) Institute of Biochemical Plant Pathology (BIOP)