Abstract
Bentazon 6-hydroxylase (B6H) and cinnamic acid 4-hydroxylase (CA4H) activities were determined in rice (Oryza sativa L.) microsomes to study methods of enhancing cytochrome P-450 mediated aryl hydroxylation of bentazon by hydoxylase inducing compounds. Pretreating rice seeds with 1,8-naphthalic anhydride at 0.5-2% and fenclorim at 5 and 10 increased B6H and CA4H activities. Treatments of rice seedling with ethanol 2.5% enhanced B6H and CA4H activities, and with phenobarbital at 12 mM enhanced B6H activity, and CA4H activity was enhanced at 2 mM. B6H activity was synergistically enhanced by combined treatments of ethanol 2.5 or 5% and phenobarbital 8 or 12mM and also that of 1,8-naphthalic anhydride 0.5 or 1% and phenobarbital 8 or 12 mM, but CA4H activity was decreased by combined treatment. Five-day-old rice seedlings showed higher B6H and CA4H activities which decreased with seedling age.
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Claims 9
Claim · model-written summary
Naphthalic anhydride pretreatment increased both B6H and CA4H activities.
- Taxon
- rice
Oryza sativae0 - Treatment
- 1,8-naphthalic anhydride at 0.5-2%e0
- Outcome
- B6H and CA4H activitiese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pretreating rice seeds with 1,8-naphthalic anhydride at 0.5-2% and fenclorim at 5 and 10 increased B6H and CA4H activities”
Claim · model-written summary
Fenclorim pretreatment increased both B6H and CA4H activities.
- Taxon
- riceOryza sativae0
- Treatment
- fenclorim at 5 and 10e0
- Outcome
- B6H and CA4H activitiese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pretreating rice seeds with 1,8-naphthalic anhydride at 0.5-2% and fenclorim at 5 and 10 increased B6H and CA4H activities”
Claim · model-written summary
Ethanol at 2.5% enhanced both hydroxylase activities.
- Taxon
- riceOryza sativae0
- Treatment
- ethanol 2.5%e0
- Outcome
- B6H and CA4H activitiese0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatments of rice seedling with ethanol 2.5% enhanced B6H and CA4H activities”
Claim · model-written summary
Phenobarbital at 12 mM enhanced B6H activity.
- Taxon
- riceOryza sativae1
- Treatment
- phenobarbital at 12 mMe0
- Outcome
- B6H activitye0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with phenobarbital at 12 mM enhanced B6H activity”
e1“Treatments of rice seedling with ethanol 2.5% enhanced B6H and CA4H activities”
Claim · model-written summary
Phenobarbital at 2 mM enhanced CA4H activity.
- Taxon
- riceOryza sativae2
- Treatment
- phenobarbitale1
- Outcome
- CA4H activitye0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CA4H activity was enhanced at 2 mM”
e1“and with phenobarbital at 12 mM enhanced B6H activity”
e2“Treatments of rice seedling with ethanol 2.5% enhanced B6H and CA4H activities”
Claim · model-written summary
Combined ethanol and phenobarbital synergistically enhanced B6H.
- Taxon
- RiceOryza sativat0
- Treatment
- combined treatments of ethanol 2.5 or 5% and phenobarbital 8 or 12mMe0
- Outcome
- B6H activitye0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B6H activity was synergistically enhanced by combined treatments of ethanol 2.5 or 5% and phenobarbital 8 or 12mM”
t0“Rice”
Claim · model-written summary
Combined naphthalic anhydride and phenobarbital synergistically enhanced B6H.
- Taxon
- RiceOryza sativat0
- Treatment
- 1,8-naphthalic anhydride 0.5 or 1% and phenobarbital 8 or 12 mMe0
- Outcome
- B6H activitye0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B6H activity was synergistically enhanced by combined treatments of ethanol 2.5 or 5% and phenobarbital 8 or 12mM and also that of 1,8-naphthalic anhydride 0.5 or 1% and phenobarbital 8 or 12 mM”
t0“Rice”
Claim · model-written summary
Combined treatment decreased CA4H activity.
- Taxon
- RiceOryza sativat0
- Treatment
- combined treatmente0
- Outcome
- CA4H activitye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but CA4H activity was decreased by combined treatment”
t0“Rice”
Claim · model-written summary
Five-day-old seedlings had higher B6H and CA4H activities, declining with seedling age.
- Taxon
- riceOryza sativae0
- Organ / stage
- Five-day-old rice seedlingse0
- Outcome
- B6H and CA4H activitiese0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Five-day-old rice seedlings showed higher B6H and CA4H activities which decreased with seedling age”
The same questions in other papers
ethanol · molecular: metabolites · Oryza sativa (rice)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- positive
Fenclorim · molecular: metabolites · Oryza sativa (rice)Positive and negative results
3 papers in the same direction as this paper · 1 reporting no difference from an alternative
- no effect
- positive
- positive
1 paper more in this group
See all 5 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.