Mitogen-activated protein kinase and abscisic acid signal transduction.

S. Heimovaara-Dijkstra*, C. Testerink, M. Wang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter

16 Citations (Scopus)

Abstract

The phytohormone abscisic acid (ABA) is a classical plant hormone, responsible for regulation of abscission, diverse aspects of plant and seed development, stress responses and germination. It was found that ABA signal transduction in plants can involve the activity of type 2C-phosphatases (PP2C), calcium, potassium, pH and a transient activation of MAP kinase. The ABA signal transduction cascades have been shown to be tissue-specific, the transient activation of MAP kinase has until now only been found in barley aleurone cells. However, type 2C phosphatases are involved in the induction of most ABA responses, as shown by the PP2C-deficient abi-mutants. These phosphatases show high homology with phosphatases that regulate MAP kinase activity in yeast. In addition, the role of farnesyl transferase as a negative regulator of ABA responses also indicates towards involvement of MAP kinase in ABA signal transduction. Farnesyl transferase is known to regulate Ras proteins, Ras proteins in turn are known to regulate MAP kinase activation. Interestingly, Ras-like proteins were detected in barley aleurone cells. Further establishment of the involvement of MAP kinase in ABA signal transduction and its role therein, still awaits more study.

Original languageEnglish
Title of host publicationMAP Kinases in Plant Signal Transduction
EditorsHeribert Hirt
Place of PublicationBerlin
PublisherSpringer
Pages131-144
Number of pages14
ISBN (Electronic)9783540491668
ISBN (Print)9783642536922
DOIs
Publication statusPublished - 2000
Externally publishedYes

Publication series

NameResults and problems in cell differentiation
Volume27
ISSN (Print)0080-1844

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  • Cite this

    Heimovaara-Dijkstra, S., Testerink, C., & Wang, M. (2000). Mitogen-activated protein kinase and abscisic acid signal transduction. In H. Hirt (Ed.), MAP Kinases in Plant Signal Transduction (pp. 131-144). (Results and problems in cell differentiation; Vol. 27). Berlin: Springer. https://doi.org/10.1007/978-3-540-49166-8_10