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• W2135097217 abstract "Summary Considerable advances have been made, both in the technologies available to study changes in intracellular cytosolic free Ca 2+ ([Ca 2+ ] i ), and in our understanding of Ca 2+ signalling cascades in plant cells, but how specificity can be generated from such a ubiquitous component as Ca 2+ is questionable. Recently the concept of ‘Ca 2+ signatures’ has been formulated; tight control of the temporal and spatial characteristics of alterations in [Ca 2+ ] i signals is thought to be responsible, at least in part, for the specificity of the response. However, the way in which Ca 2+ signatures are decoded, which depends on the nature and location of the targets of the Ca 2+ signals, has received little attention. In a few key systems, progress is being made on how diverse Ca 2+ signatures might be transduced within cells in response to specific signals. Valuable pieces of the signal‐specificity puzzle are being put together and this is illustrated here using some key examples; these emphasize the global importance of Ca 2+ ‐mediated signal‐transduction cascades in the responses of plants to a wide diversity of extracellular signals. However, the way in which signal specificity is encoded and transduced is still far from clear. Contents Summary 7 I. Introduction: Ca 2+ as a signal transducer 8 II. Alterations in intracellular [Ca 2+ ] 8 1. Measuring alterations in [Ca 2+ ] 8 Imaging [Ca 2+ ] i using Ca 2+ ‐sensitive dyes 8 Measuring [Ca 2+ ] i using aequorin 9 Imaging [Ca 2+ ] i using cameleon 10 2. The concept of the ‘Ca 2+ signature 10 3. How might specific Ca 2+ signatures be generated? 11 Control of intracellular Ca 2+ release 11 Control of influx of extracellular Ca 2+ 12 4. Examples of Ca 2+ signatures and cellular responses to increases in [Ca 2+ ] 13 Ca 2+ signatures in stomatal guard cells in response to abscisic acid signals 14 Ca 2+ signals in response to abiotic stimuli1 8 Ca 2+ signatures involved in plant‐pathogen responses 19 Ca 2+ signatures in control of plant reproduction 20 Ca 2+ signatures in root hairs in response to nodulation signals 23 III. Decoding the [Ca 2+ ] i signatures 24 1. Coupling Ca 2+ signals to responses through CaM 26 2. Coupling Ca 2+ signals to responses through CDPK 27 3. Novel Ca 2+ binding proteins as primary Ca 2+ sensors 28 Conclusions and Perspective 28 References 29" @default.
• W2135097217 created "2016-06-24" @default.
• W2135097217 creator A5040510197 @default.
• W2135097217 creator A5048089032 @default.
• W2135097217 date "2001-07-01" @default.
• W2135097217 modified "2023-10-11" @default.
• W2135097217 title "Unravelling response‐specificity in Ca²⁺ signalling pathways in plant cells" @default.
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