Abstract：
:The cytoplasmic Ca(2+) signals that participate in nearly all aspects of plant growth and development encode information as binary switches or information-rich signatures. They are the result of influx (thermodynamically passive) and efflux (thermodynamically active) activities mediated by membrane transport proteins. On the influx side, confirming the molecular identities of Ca(2+)-permeable channels is still a major research topic. Cyclic nucleotide-gated channels and glutamate receptor-like channels are candidates well supported by evidence. On the efflux side, CAX antiporters and P-type ATPase pumps are the principal molecular entities. Both of these active transporters load Ca(2+) into specific compartments and have the potential to reduce the magnitude and duration of a Ca(2+) transient. Recent studies indicate calmodulin-activated Ca(2+) pumps in endomembrane systems can dampen the magnitude and duration of a Ca(2+) transient that could otherwise grow into a Ca(2+) cell death signature. An important challenge following molecular characterization of the influx and efflux pathways is to understand how they are coordinately regulated to produce a Ca(2+) switch or encode specific information into a Ca(2+) signature.
journal_name
Curr Opin Plant Bioljournal_title
Current opinion in plant biologyauthors
Spalding EP,Harper JFdoi
10.1016/j.pbi.2011.08.001subject
Has Abstractpub_date
2011-12-01 00:00:00pages
715-20issue
6eissn
1369-5266issn
1879-0356pii
S1369-5266(11)00124-5journal_volume
14pub_type
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journal_title：Current opinion in plant biology
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journal_title：Current opinion in plant biology
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journal_title：Current opinion in plant biology
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