Abstract
Protein kinases are involved in signal transduction for environmental stress responses. In response to drought and salinity, a 48-kDa protein kinase (AAPK; abscisic acid-activated protein kinase (AAPK) in guard cells is activated by abscisic acid (ABA) and phosphorylates several targets such as the carboxy-terminus of inward-rectifying K+ channel and heterogeneous mRNA binding protein to adopt to the changing environment. The AAPK expressed specifically in guard cells, and recombinant AAPK was phosphorylated only with the extract from ABA-treated guard cells but not from untreated cells. This indicates the presence of an AAPK kinase (AAPKK), which is activated by ABA and phosphorylates AAPK preceding the activation of AAPK. Both AAPK and AAPKK are involved in the protein kinase cascade for the rapid ABA-signaling.
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Claims 5
Claim · model-written summary
ABA activates AAPK in guard cells.
- Taxon
- Vicia faba
Vicia fabat0 - Treatment
- abscisic acid (ABA)e0
- Gene
- AAPKe0
- Outcome
- protein kinase (AAPKe0
- Direction
- activatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a 48-kDa protein kinase (AAPK; abscisic acid-activated protein kinase (AAPK) in guard cells is activated by abscisic acid (ABA)”
t0“Vicia faba”
Claim · model-written summary
AAPK phosphorylates inward rectifying K channel and mRNA binding protein targets.
- Taxon
- Vicia fabaVicia fabat0
- Gene
- AAPKe1
- Outcome
- phosphorylates several targetse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phosphorylates several targets such as the carboxy-terminus of inward-rectifying K+ channel and heterogeneous mRNA binding protein”
t0“Vicia faba”
e1“The AAPK expressed specifically in guard cells”
Claim · model-written summary
AAPK expression was guard cell specific.
- Taxon
- Vicia fabaVicia fabat0
- Organ / stage
- guard cellse0
- Gene
- AAPKe0
- Outcome
- expressed specifically in guard cellse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The AAPK expressed specifically in guard cells”
t0“Vicia faba”
Claim · model-written summary
Recombinant AAPK was phosphorylated with ABA treated cell extract but not untreated extract.
- Taxon
- Vicia fabaVicia fabat0
- Treatment
- extract from ABA-treated guard cellse0
- Gene
- AAPKe0
- Outcome
- recombinant AAPK was phosphorylatede0
- Direction
- onlye0
- Comparator
- untreated cellse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“recombinant AAPK was phosphorylated only with the extract from ABA-treated guard cells but not from untreated cells.”
t0“Vicia faba”
Claim · model-written summary
Authors infer an ABA activated AAPK kinase upstream of AAPK.
- Taxon
- Vicia fabaVicia fabat0
- Gene
- AAPK kinase (AAPKK)e0
- Outcome
- phosphorylates AAPK preceding the activation of AAPKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This indicates the presence of an AAPK kinase (AAPKK), which is activated by ABA and phosphorylates AAPK preceding the activation of AAPK.”
t0“Vicia faba”
The same questions in other papers
(+)-abscisic acid · quality: protein · Vicia faba (faba bean)Results agree
1 paper in the same direction as this paper
- positive
botanical · quality: protein · Vicia faba (faba bean)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.