Abstract
Clodionafop, an acetyl-coenzyme A carboxylase (ACCase) inhibitor, changed the shape of the chlorophyll fluorescence induction curve (Kautsky curve) in barley and oat in greenhouse experiments. Biomass ED50, based on log-logistic dose–response curves, for barley was considerably higher than that for oat in all experiments. Biomass ED50 and relative potency (ED50 [barley]/ED50 [oat]) were consistent among experiments when sprayed at the same phenological stage of plant development. Especially at high doses, clodinafop changed the shape of the Kautsky curve more for oat than for barley. From the numerous parameters that can be derived from the OJIP steps of the Kautsky curve, we found that (1) Fvj, the relative changes at the J step [Fvj = (Fm − Fj)/Fm], (2) area between Kautsky curve and maximum fluorescence (Fm), and (3) Fv/Fm, maximum quantum efficiency of Photosystem II [Fv/Fm = (Fm − F0)/Fm], were closely linked to the biomass dose–response relationships for both species. The linkage between biomass and the fluorescence parameters may be used to shorten the screening period for ACCase inhibitors.
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Claims 6
Claim · model-written summary
Clodionafop changed chlorophyll fluorescence induction curves in barley and oat.
- Taxon
- barley and oat
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Hordeum vulgare
Avena sativae0 - Treatment
- Clodionafope0
- Outcome
- shape of the chlorophyll fluorescence induction curvee0
- Direction
- changede0
- Setting
- greenhouse experimentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Clodionafop, an acetyl-coenzyme A carboxylase (ACCase) inhibitor, changed the shape of the chlorophyll fluorescence induction curve (Kautsky curve) in barley and oat in greenhouse experiments.”
Claim · model-written summary
Barley biomass ED50 was considerably higher than oat biomass ED50 in every experiment.
- Taxon
- barleyHordeum vulgaree0
- Outcome
- Biomass ED50e0
- Direction
- highere0
- Qualifier
- in all experimentse0
- Comparator
- oate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biomass ED50, based on log-logistic dose–response curves, for barley was considerably higher than that for oat in all experiments.”
Claim · model-written summary
Biomass ED50 and relative potency were consistent across experiments at the same phenological stage.
- Taxon
- barleyHordeum vulgaree0
- Outcome
- Biomass ED50 and relative potencye0
- Direction
- consistente0
- Qualifier
- when sprayed at the same phenological stage of plant developmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biomass ED50 and relative potency (ED50 [barley]/ED50 [oat]) were consistent among experiments when sprayed at the same phenological stage of plant development.”
Claim · model-written summary
At high doses, clodinafop altered the oat Kautsky curve more than the barley curve.
- Taxon
- oatAvena sativae0
- Treatment
- clodinafope0
- Outcome
- shape of the Kautsky curvee0
- Direction
- moree0
- Qualifier
- Especially at high dosese0
- Comparator
- barleye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Especially at high doses, clodinafop changed the shape of the Kautsky curve more for oat than for barley.”
Claim · model-written summary
Three chlorophyll fluorescence parameters were closely linked to biomass dose–response relationships in both species.
- Taxon
- both speciese0
- Outcome
- biomass dose–response relationshipse0
- Qualifier
- closely linkede0
- Comparator
- Fvje0
Not reportedDirection
Verbatim
e0“(1) Fvj, the relative changes at the J step [Fvj = (Fm − Fj)/Fm], (2) area between Kautsky curve and maximum fluorescence (Fm), and (3) Fv/Fm, maximum quantum efficiency of Photosystem II [Fv/Fm = (Fm − F0)/Fm], were closely linked to the biomass dose–response relationships for both species.”
Claim · model-written summary
The fluorescence–biomass linkage may shorten screening for ACCase inhibitors.
- Outcome
- shorten the screening period for ACCase inhibitorse0
Not reportedTaxon
Verbatim
e0“The linkage between biomass and the fluorescence parameters may be used to shorten the screening period for ACCase inhibitors.”
t0“Clodinafop changes the chlorophyll fluorescence induction curve”