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- Title
Calcium Signals: The Lead Currency of Plant Information Processing.
- Authors
Kudla, Jörg; Batistič, Oliver; Hashimoto, Kenji
- Abstract
Ca2+ signals are core transducers and regulators in many adaptation and developmental processes of plants. Ca2+ signals are represented by stimulus-specific signatures that result from the concerted action of channels, pumps, and carriers that shape temporally and spatially defined Ca2+ elevations. Cellular Ca2+ signals are decoded and transmitted by a toolkit of Ca2+ binding proteins that relay this information into downstream responses. Major transduction routes of Ca2+ signaling involve Ca2+-regulated kinases mediating phosphorylation events that orchestrate downstream responses or comprise regulation of gene expression via Ca2+-regulated transcription factors and Ca2+-responsive promoter elements. Here, we review some of the remarkable progress that has been made in recent years, especially in identifying critical components functioning in Ca2+ signal transduction, both at the single-cell and multicellular level. Despite impressive progress in our understanding of the processing of Ca2+ signals during the past years, the elucidation of the exact mechanistic principles that underlie the specific recognition and conversion of the cellular Ca2+ currency into defined changes in protein–protein interaction, protein phosphorylation, and gene expression and thereby establish the specificity in stimulus response coupling remain to be explored.
- Subjects
GENETIC regulation; INFORMATION processing; CARRIER proteins; CELLULAR recognition; TRANSCRIPTION factors; CALCIUM ions; CALCIUM
- Publication
Plant Cell, 2010, Vol 22, Issue 3, p541
- ISSN
1040-4651
- Publication type
Article
- DOI
10.1105/tpc.109.072686