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CPK3/6 mediate ABA guard-cell signaling
Calcium-dependent kinases CPK3 and CPK6 act in ABA control of guard-cell anion/Ca²⁺ channels and stomatal closure.
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CDPK family size?
34 genes.
Source: CDPKs CPK6 and CPK3 function in ABA regulation of guard cell S-type anion- and Ca(2+)-permeable channels and stomatal closure · DOI · quote verified
Key genes?
CPK3 and CPK6.
Source: CDPKs CPK6 and CPK3 function in ABA regulation of guard cell S-type anion- and Ca(2+)-permeable channels and stomatal closure · DOI · quote verified
Hormone pathway?
ABA guard-cell signaling.
Source: CDPKs CPK6 and CPK3 function in ABA regulation of guard cell S-type anion- and Ca(2+)-permeable channels and stomatal closure · DOI · quote verified
Channel outputs?
S-type anion and Ca²⁺-permeable channels.
Source: CDPKs CPK6 and CPK3 function in ABA regulation of guard cell S-type anion- and Ca(2+)-permeable channels and stomatal closure · DOI · quote verified
Expression?
Guard and mesophyll cells.
Source: CDPKs CPK6 and CPK3 function in ABA regulation of guard cell S-type anion- and Ca(2+)-permeable channels and stomatal closure · DOI · quote verified
Purity control?
KAT1+/CBP− guard-cell preps.
Source: CDPKs CPK6 and CPK3 function in ABA regulation of guard cell S-type anion- and Ca(2+)-permeable channels and stomatal closure · DOI · quote verified
Genetics?
T-DNA insertion mutants.
Source: CDPKs CPK6 and CPK3 function in ABA regulation of guard cell S-type anion- and Ca(2+)-permeable channels and stomatal closure · DOI · quote verified
Phenotype focus?
Stomatal closure.
Source: CDPKs CPK6 and CPK3 function in ABA regulation of guard cell S-type anion- and Ca(2+)-permeable channels and stomatal closure · DOI · quote verified
Limit?
Two CDPKs among many.
Source: CDPKs CPK6 and CPK3 function in ABA regulation of guard cell S-type anion- and Ca(2+)-permeable channels and stomatal closure · DOI · quote verified
Takeaway?
Ca²⁺-dependent kinases wire ABA to ion fluxes.
Source: CDPKs CPK6 and CPK3 function in ABA regulation of guard cell S-type anion- and Ca(2+)-permeable channels and stomatal closure · DOI · quote verified