Abstract
The inhibition of photosynthetic activity by bisulphite was studied in intact leaves of abscisic acid (ABA)-treated and non-treated (control) barley plants. ABA inhibited the photosynthetic process as evidenced by lower values of chlorophyll fluorescence kinetic parameters Fv/Fm (photosystem 2 activity) and Rfd (vitality index, related to the whole photosynthetic activity) compared with ABA-non-treated plants. After bisulphite treatment, the extent of inhibition was smaller in ABA-treated plants than in the control ones indicating a protective effect of ABA. The protective action sites of ABA were the QA reduction and the Calvin cycle.
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Claims 4
Claim · model-written summary
ABA lowered the chlorophyll fluorescence parameter Fv/Fm in barley leaves relative to ABA-non-treated plants.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaret0 - Treatment
- ABAe1
- Outcome
- Fv/Fme1
- Direction
- lowere1
- Qualifier
- photosystem 2 activitye1
- Comparator
- ABA-non-treated plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“Barley Leaves”
e1“ABA inhibited the photosynthetic process as evidenced by lower values of chlorophyll fluorescence kinetic parameters Fv/Fm (photosystem 2 activity) and Rfd (vitality index, related to the whole photosynthetic activity) compared with ABA-non-treated plants”
Claim · model-written summary
ABA lowered the chlorophyll fluorescence parameter Rfd in barley leaves relative to ABA-non-treated plants.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- ABAe1
- Outcome
- Rfde1
- Direction
- lowere1
- Qualifier
- vitality index, related to the whole photosynthetic activitye1
- Comparator
- ABA-non-treated plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Barley Leaves”
e1“ABA inhibited the photosynthetic process as evidenced by lower values of chlorophyll fluorescence kinetic parameters Fv/Fm (photosystem 2 activity) and Rfd (vitality index, related to the whole photosynthetic activity) compared with ABA-non-treated plants”
Claim · model-written summary
After bisulphite treatment, ABA-treated barley plants showed a smaller extent of inhibition than control plants, indicating a protective effect of ABA.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- bisulphite treatmente2
- Outcome
- extent of inhibitione2
- Direction
- smallere2
- Qualifier
- in ABA-treated plantse2
- Comparator
- control onese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Barley Leaves”
e2“After bisulphite treatment, the extent of inhibition was smaller in ABA-treated plants than in the control ones indicating a protective effect of ABA”
Claim · model-written summary
The protective action sites of ABA in barley leaves are the QA reduction and the Calvin cycle.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- ABAe3
- Outcome
- protective action sitese3
- Qualifier
- QA reduction and the Calvin cyclee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Barley Leaves”
e3“The protective action sites of ABA were the QA reduction and the Calvin cycle”
The same questions in other papers
(+)-abscisic acid · physiology: photosynthesis · Hordeum vulgare (barley)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
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.