Abstract
The preparation of new esters of o-coumaric and cinnamic acids is described. Spray applications of o-coumaric acid were inactive in vivo against Venturia inaequalis on immature leaves but alkyl esters of the acid penetrated intact leaves more readily and reduced the incidence of disease. Isobutyl o-coumarate was the most active compound. In contrast to o-coumaric acid, cinnamic acid gave some measure of control but esters of this acid were not consistently better. The most satisfactory formulation mixture for these materials contained acetone, Tween 80 and Triton X-100, giving a fine crystalline suspension. Systemic action of isobutyl o-coumarate in shoots of the apple variety Cox's Orange Pippin was demonstrated, and its presence in the upper epidermis of the first five leaves above those to which it had been applied was shown by thin-layer chromatography of extracted material.
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Claims 8
Claim · model-written summary
Spray applications of o-coumaric acid were inactive in vivo against Venturia inaequalis on immature apple leaves.
- Taxon
- apple
Malus domesticat0 - Treatment
- Spray applications of o-coumaric acide0
- Interactor
- Venturia inaequalis
Venturia inaequalise0pathogen - Outcome
- in vivoe0
- Direction
- inactivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Studies of the in vivo activity of esters of o-coumaric and cinnamic acids against apple scab”
e0“Spray applications of o-coumaric acid were inactive in vivo against Venturia inaequalis on immature leaves”
Claim · model-written summary
Alkyl esters of o-coumaric acid reduced the incidence of apple scab after penetrating intact leaves.
- Taxon
- appleMalus domesticat0
- Treatment
- alkyl esters of the acide1
- Interactor
- Venturia inaequalisVenturia inaequalise0pathogen
- Outcome
- incidence of diseasee1
- Direction
- reducede1
- Qualifier
- penetrated intact leaves more readilye1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Studies of the in vivo activity of esters of o-coumaric and cinnamic acids against apple scab”
e0“Spray applications of o-coumaric acid were inactive in vivo against Venturia inaequalis on immature leaves”
e1“alkyl esters of the acid penetrated intact leaves more readily and reduced the incidence of disease”
Claim · model-written summary
Isobutyl o-coumarate was the most active compound tested.
- Taxon
- appleMalus domesticat0
- Treatment
- Isobutyl o-coumaratee2
- Compound
- Isobutyl o-coumaratee2
- Outcome
- most active compounde2
- Direction
- most activee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Studies of the in vivo activity of esters of o-coumaric and cinnamic acids against apple scab”
e2“Isobutyl o-coumarate was the most active compound”
Claim · model-written summary
Cinnamic acid gave some measure of control of apple scab, unlike o-coumaric acid.
- Taxon
- appleMalus domesticat0
- Treatment
- cinnamic acide3
- Outcome
- controle3
- Direction
- some measuree3
- Comparator
- o-coumaric acide3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Studies of the in vivo activity of esters of o-coumaric and cinnamic acids against apple scab”
e3“In contrast to o-coumaric acid, cinnamic acid gave some measure of control but esters of this acid were not consistently better”
Claim · model-written summary
Esters of cinnamic acid were not consistently better than cinnamic acid.
- Taxon
- appleMalus domesticat0
- Treatment
- esters of this acide3
- Outcome
- consistently bettere3
- Direction
- not consistently bettere3
- Comparator
- cinnamic acide3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Studies of the in vivo activity of esters of o-coumaric and cinnamic acids against apple scab”
e3“In contrast to o-coumaric acid, cinnamic acid gave some measure of control but esters of this acid were not consistently better”
Claim · model-written summary
The most satisfactory formulation of these esters, with acetone, Tween 80 and Triton X-100, gave a fine crystalline suspension.
- Taxon
- appleMalus domesticat0
- Treatment
- acetone, Tween 80 and Triton X-100e4
- Outcome
- fine crystalline suspensione4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Studies of the in vivo activity of esters of o-coumaric and cinnamic acids against apple scab”
e4“The most satisfactory formulation mixture for these materials contained acetone, Tween 80 and Triton X-100, giving a fine crystalline suspension”
Claim · model-written summary
Isobutyl o-coumarate moved systemically in shoots of the apple variety Cox's Orange Pippin.
- Taxon
- appleMalus domesticae5
- Material
- Cox's Orange Pippine5
- Organ / stage
- shootse5
- Compound
- isobutyl o-coumaratee5
- Outcome
- Systemic actione5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Systemic action of isobutyl o-coumarate in shoots of the apple variety Cox's Orange Pippin was demonstrated”
Claim · model-written summary
Isobutyl o-coumarate was present in the upper epidermis of the first five leaves above the treated leaves.
- Taxon
- appleMalus domesticat0
- Organ / stage
- upper epidermis of the first five leavese6
- Compound
- isobutyl o-coumaratee5
- Outcome
- its presencee6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Studies of the in vivo activity of esters of o-coumaric and cinnamic acids against apple scab”
e5“Systemic action of isobutyl o-coumarate in shoots of the apple variety Cox's Orange Pippin was demonstrated”
e6“its presence in the upper epidermis of the first five leaves above those to which it had been applied was shown by thin-layer chromatography of extracted material”
The same questions in other papers
application · Venturia inaequalis · Malus domestica (apple)Positive and negative results
2 papers in the same direction as this paper · 11 in the opposite direction
- positive
- positive
- positive
10 papers more in this group
See all 14 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.