Abstract
summary The partial pressure of intercellular CO 2 derived from gas exchange data for water‐stressed grapevine (Vitis vinijera L.) , oleander (Nerium oleander L.) and red‐flowering gum ( Eucalyptus ficifolia F. Muell.) does not indicate the actual average intercellular CO 2 of the leaf. This can be determined from chlorophyll fluorescence signals and modelled from conventional gas exchange information. Water stress increases endogenous levels of abscisic acid and the leaves respond in a similar manner to that observed when exogenous abscisic acid is applied. Autoradiograms show that water stress results in non‐uniform gas exchange over small areas of the leaf. Non‐uniform stomatal closure can account for the apparent non‐stomatal inhibition of photosynthesis in plants experiencing water stress.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Gas exchange estimates of intercellular CO 2 did not reflect actual leaf averages in water-stressed grapevine.
- Outcome
- partial pressure of intercellular CO 2e0
- Direction
- does not indicatee0
- Comparator
- actual average intercellular CO 2 of the leafe0
VitisOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The partial pressure of intercellular CO 2 derived from gas exchange data for water‐stressed grapevine (Vitis vinijera L.) , oleander (Nerium oleander L.) and red‐flowering gum ( Eucalyptus ficifolia F. Muell.) does not indicate the actual average intercellular CO 2 of the leaf.”
Claim · model-written summary
Gas exchange estimates of intercellular CO 2 did not reflect actual leaf averages in water-stressed oleander.
Verbatim
e0“The partial pressure of intercellular CO 2 derived from gas exchange data for water‐stressed grapevine (Vitis vinijera L.) , oleander (Nerium oleander L.) and red‐flowering gum ( Eucalyptus ficifolia F. Muell.) does not indicate the actual average intercellular CO 2 of the leaf.”
Claim · model-written summary
Gas exchange estimates of intercellular CO 2 did not reflect actual leaf averages in water-stressed red-flowering gum.
- Taxon
- red‐flowering gum
Corymbia ficifoliae0 - Outcome
- partial pressure of intercellular CO 2e0
- Direction
- does not indicatee0
- Comparator
- actual average intercellular CO 2 of the leafe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The partial pressure of intercellular CO 2 derived from gas exchange data for water‐stressed grapevine (Vitis vinijera L.) , oleander (Nerium oleander L.) and red‐flowering gum ( Eucalyptus ficifolia F. Muell.) does not indicate the actual average intercellular CO 2 of the leaf.”
Claim · model-written summary
Chlorophyll fluorescence and conventional gas exchange modeling can determine actual average leaf intercellular CO 2.
- Outcome
- determined from chlorophyll fluorescence signalse0
- Comparator
- conventional gas exchange informatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This can be determined from chlorophyll fluorescence signals and modelled from conventional gas exchange information.”
t0“photosynthesis”
e1“water‐stressed grapevine”
Claim · model-written summary
Water stress increased endogenous abscisic acid levels.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress increases endogenous levels of abscisic acid”
t0“photosynthesis”
e1“water‐stressed grapevine”
Claim · model-written summary
Leaves under water stress responded similarly to leaves given exogenous abscisic acid.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the leaves respond in a similar manner to that observed when exogenous abscisic acid is applied.”
t0“photosynthesis”
e1“water‐stressed grapevine”
Claim · model-written summary
Water stress produced non-uniform gas exchange over small leaf areas.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Autoradiograms show that water stress results in non‐uniform gas exchange over small areas of the leaf.”
t0“photosynthesis”
e1“water‐stressed grapevine”
Claim · model-written summary
Non-uniform stomatal closure can explain apparent non-stomatal photosynthesis inhibition under water stress.
- Taxon
- plantsViridiplantaee0
- Outcome
- apparent non‐stomatal inhibition of photosynthesise0
- Qualifier
- Non‐uniform stomatal closuree0
Verbatim
e0“Non‐uniform stomatal closure can account for the apparent non‐stomatal inhibition of photosynthesis in plants experiencing water stress.”
The same questions in other papers
drought · physiology: gas exchange · VitisPositive and negative results
14 papers in the same direction as this paper · 3 in the opposite direction
- negative
- positive
- positive
14 papers more in this group
See all 18 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.