Abstract
Ophiobolin A, a sesterterpene metabolite of Helminthosporium maydis, Nisikado and Miyake, stimulates net leakage of electrolytes and glucose from maize (Zea mays L.) seedling roots. Treatment of the roots with ophiobolin A at a concentration of 10 mug/ml (25 mum) inhibits uptake of 10 mm 2-deoxyglucose by 50% and of 0.5 mm 2-deoxyglucose by 85%. Compartmental analysis of the efflux of 3-O-methylglucose failed to show a similar effect of ophiobolin A on the rate of efflux of hexose. The inhibition of uptake is not reversible by washing. There is no difference in the effects on roots from cytoplasmic male sterile or normal cytoplasm plants, and exposure of carrot (Daucus carota L.) root discs to ophiobolin A also causes inhibition of 2-deoxyglucose uptake by this tissue.
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Claims 8
Claim · model-written summary
Ophiobolin A stimulated electrolyte leakage from maize seedling roots.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ophiobolin A, a sesterterpene metabolite of Helminthosporium maydis, Nisikado and Miyake, stimulates net leakage of electrolytes and glucose from maize (Zea mays L.) seedling roots.”
Claim · model-written summary
Ophiobolin A stimulated glucose leakage from maize seedling roots.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ophiobolin A, a sesterterpene metabolite of Helminthosporium maydis, Nisikado and Miyake, stimulates net leakage of electrolytes and glucose from maize (Zea mays L.) seedling roots.”
Claim · model-written summary
Ophiobolin A inhibited uptake of 10 mm 2-deoxyglucose by 50%.
- Treatment
- ophiobolin A at a concentration of 10 mug/ml (25 mum)e0
- Outcome
- uptake of 10 mm 2-deoxyglucosee0
- Direction
- inhibitse0
- Value
- 50%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment of the roots with ophiobolin A at a concentration of 10 mug/ml (25 mum) inhibits uptake of 10 mm 2-deoxyglucose by 50% and of 0.5 mm 2-deoxyglucose by 85%.”
t0“Maize”
Claim · model-written summary
Ophiobolin A inhibited uptake of 0.5 mm 2-deoxyglucose by 85%.
- Treatment
- ophiobolin A at a concentration of 10 mug/ml (25 mum)e0
- Outcome
- of 0.5 mm 2-deoxyglucosee0
- Direction
- inhibitse0
- Value
- 85%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment of the roots with ophiobolin A at a concentration of 10 mug/ml (25 mum) inhibits uptake of 10 mm 2-deoxyglucose by 50% and of 0.5 mm 2-deoxyglucose by 85%.”
t0“Maize”
Claim · model-written summary
Compartmental analysis did not show a similar effect on hexose efflux rate.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compartmental analysis of the efflux of 3-O-methylglucose failed to show a similar effect of ophiobolin A on the rate of efflux of hexose.”
t0“Maize”
Claim · model-written summary
Washing did not reverse uptake inhibition.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inhibition of uptake is not reversible by washing.”
t0“Maize”
Claim · model-written summary
Effects did not differ between sterile and normal cytoplasm maize roots.
- Outcome
- no difference in the effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There is no difference in the effects on roots from cytoplasmic male sterile or normal cytoplasm plants”
t0“Maize”
Claim · model-written summary
Ophiobolin A inhibited 2-deoxyglucose uptake in carrot root discs.
- Taxon
- carrot
Daucus carotae0 - Treatment
- ophiobolin Ae0
- Outcome
- 2-deoxyglucose uptakee0
- Direction
- inhibitione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exposure of carrot (Daucus carota L.) root discs to ophiobolin A also causes inhibition of 2-deoxyglucose uptake by this tissue.”
The same questions in other papers
processing · disease · Zea mays (maize)Positive and negative results
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