Abstract
H_(2)O_(2) pretreatment enhanced chilling tolerance and calmodulin activity in maize seedlings. The H_(2)O_(2) induced chilling tolerance was eliminated by blocking the mobilization of intracellular Ca~(2+) pool flux (ruthenium red treatment), decrease of cell Ca~(2+) level (EGTA treatment) and inhibition of CaM activity (TFP and CPZ treatments) in maize seedlings. On the other hand, blocking the influx of extracellular Ca~(2+) into cells across plasma membranes (La 3+ treatment) did not inhibit the H_(2)O_(2) induced chilling tolerance, even improved slightly the tolerance. In addition, pretreatment of high level Ca~(2+) (20 mmol·L -1 ) weakened the H_(2)O_(2) induced chilling tolerance in maize seedlings. These results suggest that CaM and the mobilization of intracellular Ca~(2+) pool play an important role in formation of the H_(2)O_(2) induced chilling tolerance in maize seedlings, and high Ca~(2+) level in apoplast and the influx of extracellular Ca~(2+) into cells across plasma me mbrane will weaken the H_(2)O_(2)-induced chilling tolerance.
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Claims 8
Claim · model-written summary
Peroxide pretreatment enhanced chilling tolerance and calmodulin activity.
- Treatment
- H_(2)O_(2) pretreatmente0
- Outcome
- chilling tolerance and calmodulin activitye0
- Direction
- enhancede0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“H_(2)O_(2) pretreatment enhanced chilling tolerance and calmodulin activity in maize seedlings.”
Claim · model-written summary
Ruthenium red eliminated peroxide-induced chilling tolerance.
- Treatment
- ruthenium red treatmente0
- Outcome
- H_(2)O_(2) induced chilling tolerancee0
- Direction
- eliminatede0
Not reportedTaxonComparator
Verbatim
e0“The H_(2)O_(2) induced chilling tolerance was eliminated by blocking the mobilization of intracellular Ca~(2+) pool flux (ruthenium red treatment)”
Claim · model-written summary
EGTA eliminated peroxide-induced chilling tolerance.
Not reportedTaxonComparator
Verbatim
e0“The H_(2)O_(2) induced chilling tolerance was eliminated by blocking the mobilization of intracellular Ca~(2+) pool flux (ruthenium red treatment), decrease of cell Ca~(2+) level (EGTA treatment)”
Claim · model-written summary
TFP and CPZ treatments eliminated peroxide-induced chilling tolerance.
- Treatment
- TFP and CPZ treatmentse0
- Outcome
- H_(2)O_(2) induced chilling tolerancee0
- Direction
- eliminatede0
Not reportedTaxonComparator
Verbatim
e0“The H_(2)O_(2) induced chilling tolerance was eliminated by blocking the mobilization of intracellular Ca~(2+) pool flux (ruthenium red treatment), decrease of cell Ca~(2+) level (EGTA treatment) and inhibition of CaM activity (TFP and CPZ treatments)”
Claim · model-written summary
La 3+ treatment did not inhibit peroxide-induced chilling tolerance and slightly improved it.
- Treatment
- La 3+ treatmente0
- Outcome
- H_(2)O_(2) induced chilling tolerancee0
- Direction
- improved slightlye0
Not reportedTaxonComparator
Verbatim
e0“blocking the influx of extracellular Ca~(2+) into cells across plasma membranes (La 3+ treatment) did not inhibit the H_(2)O_(2) induced chilling tolerance, even improved slightly the tolerance.”
Claim · model-written summary
High calcium pretreatment weakened peroxide-induced chilling tolerance.
- Treatment
- high level Ca~(2+) (20 mmol·L -1 )e0
- Outcome
- H_(2)O_(2) induced chilling tolerancee0
- Direction
- weakenede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pretreatment of high level Ca~(2+) (20 mmol·L -1 ) weakened the H_(2)O_(2) induced chilling tolerance in maize seedlings.”
Claim · model-written summary
The authors infer that CaM and intracellular calcium mobilization help form peroxide-induced chilling tolerance.
- Gene
- CaMe0
- Outcome
- H_(2)O_(2) induced chilling tolerancee0
- Qualifier
- mobilization of intracellular Ca~(2+) poole0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CaM and the mobilization of intracellular Ca~(2+) pool play an important role in formation of the H_(2)O_(2) induced chilling tolerance in maize seedlings”
Claim · model-written summary
The authors infer that high apoplastic calcium and extracellular calcium influx weaken peroxide-induced chilling tolerance.
- Outcome
- H_(2)O_(2)-induced chilling tolerancee0
- Direction
- weakene0
- Qualifier
- high Ca~(2+) level in apoplast and the influx of extracellular Ca~(2+) into cells across plasma me mbranee0
Not reportedTaxon
Verbatim
e0“high Ca~(2+) level in apoplast and the influx of extracellular Ca~(2+) into cells across plasma me mbrane will weaken the H_(2)O_(2)-induced chilling tolerance.”
The same questions in other papers
lanthanum atom · tolerance: abiotic · Zea mays (maize)Positive and negative results
1 in the opposite direction
- negative
ruthenium red · tolerance: abiotic · Zea mays (maize)Results agree
1 paper in the same direction as this paper
- negative
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.