Abstract
S ummary Under conditions which encourage stomatal opening, nitrogen deficiency (induced in wheat, sugar beets, maize and groundnuts) and iron deficiency (induced in groundnuts) markedly reduce stomatal aperture, as evaluated by means of a porometer. The effect of these deficiencies on stomatal behaviour seems to be mediated through their effect on leaf chlorophyll content. Foliar applications of urea to chlorotic leaves of nitrogen‐deficient maize restore both normal chlorophyll content and normal stomatal behaviour to the treated leaves, indicating that both variables are related on a localized, rather than a systemic level. In groundnuts the relation between chlorophyll content and stomatal aperture is the same, regardless of whether chlorosis was caused by nitrogen or iron deficiency. Chlorotic leaves had a lower apparent water saturation deficit than green leaves.
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Claims 14
Claim · model-written summary
Nitrogen deficiency markedly reduced wheat stomatal aperture under opening-promoting conditions.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- nitrogen deficiencye0
- Outcome
- stomatal aperturee0
- Direction
- reducee0
- Qualifier
- Under conditions which encourage stomatal openinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under conditions which encourage stomatal opening, nitrogen deficiency (induced in wheat, sugar beets, maize and groundnuts) and iron deficiency (induced in groundnuts) markedly reduce stomatal aperture, as evaluated by means of a porometer.”
Claim · model-written summary
Nitrogen deficiency markedly reduced sugar beet stomatal aperture under opening-promoting conditions.
- Taxon
- sugar beets
Beta vulgaris subsp. vulgarise0 - Treatment
- nitrogen deficiencye0
- Outcome
- stomatal aperturee0
- Direction
- reducee0
- Qualifier
- Under conditions which encourage stomatal openinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under conditions which encourage stomatal opening, nitrogen deficiency (induced in wheat, sugar beets, maize and groundnuts) and iron deficiency (induced in groundnuts) markedly reduce stomatal aperture, as evaluated by means of a porometer.”
Claim · model-written summary
Nitrogen deficiency markedly reduced maize stomatal aperture under opening-promoting conditions.
- Treatment
- nitrogen deficiencye0
- Outcome
- stomatal aperturee0
- Direction
- reducee0
- Qualifier
- Under conditions which encourage stomatal openinge0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under conditions which encourage stomatal opening, nitrogen deficiency (induced in wheat, sugar beets, maize and groundnuts) and iron deficiency (induced in groundnuts) markedly reduce stomatal aperture, as evaluated by means of a porometer.”
Claim · model-written summary
Nitrogen deficiency markedly reduced groundnut stomatal aperture under opening-promoting conditions.
- Taxon
- groundnuts
Arachis hypogaeae0 - Treatment
- nitrogen deficiencye0
- Outcome
- stomatal aperturee0
- Direction
- reducee0
- Qualifier
- Under conditions which encourage stomatal openinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under conditions which encourage stomatal opening, nitrogen deficiency (induced in wheat, sugar beets, maize and groundnuts) and iron deficiency (induced in groundnuts) markedly reduce stomatal aperture, as evaluated by means of a porometer.”
Claim · model-written summary
Iron deficiency markedly reduced groundnut stomatal aperture under opening-promoting conditions.
- Taxon
- groundnutsArachis hypogaeae0
- Treatment
- iron deficiencye0
- Outcome
- stomatal aperturee0
- Direction
- reducee0
- Qualifier
- Under conditions which encourage stomatal openinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under conditions which encourage stomatal opening, nitrogen deficiency (induced in wheat, sugar beets, maize and groundnuts) and iron deficiency (induced in groundnuts) markedly reduce stomatal aperture, as evaluated by means of a porometer.”
Claim · model-written summary
The authors suggest nitrogen deficiency affects wheat stomatal behavior through leaf chlorophyll content.
- Taxon
- wheatTriticum aestivume1
- Treatment
- nitrogen deficiencye1
- Compound
- chlorophylle0
- Outcome
- stomatal behavioure0
- Qualifier
- seems to be mediated through their effect on leaf chlorophyll contente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of these deficiencies on stomatal behaviour seems to be mediated through their effect on leaf chlorophyll content.”
e1“nitrogen deficiency (induced in wheat, sugar beets, maize and groundnuts)”
Claim · model-written summary
The authors suggest nitrogen deficiency affects sugar beet stomatal behavior through leaf chlorophyll content.
- Taxon
- sugar beetsBeta vulgaris subsp. vulgarise1
- Treatment
- nitrogen deficiencye1
- Compound
- chlorophylle0
- Outcome
- stomatal behavioure0
- Qualifier
- seems to be mediated through their effect on leaf chlorophyll contente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of these deficiencies on stomatal behaviour seems to be mediated through their effect on leaf chlorophyll content.”
e1“nitrogen deficiency (induced in wheat, sugar beets, maize and groundnuts)”
Claim · model-written summary
The authors suggest nitrogen deficiency affects maize stomatal behavior through leaf chlorophyll content.
- Treatment
- nitrogen deficiencye1
- Compound
- chlorophylle0
- Outcome
- stomatal behavioure0
- Qualifier
- seems to be mediated through their effect on leaf chlorophyll contente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of these deficiencies on stomatal behaviour seems to be mediated through their effect on leaf chlorophyll content.”
e1“nitrogen deficiency (induced in wheat, sugar beets, maize and groundnuts)”
Claim · model-written summary
The authors suggest nitrogen deficiency affects groundnut stomatal behavior through leaf chlorophyll content.
- Taxon
- groundnutsArachis hypogaeae1
- Treatment
- nitrogen deficiencye1
- Compound
- chlorophylle0
- Outcome
- stomatal behavioure0
- Qualifier
- seems to be mediated through their effect on leaf chlorophyll contente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of these deficiencies on stomatal behaviour seems to be mediated through their effect on leaf chlorophyll content.”
e1“nitrogen deficiency (induced in wheat, sugar beets, maize and groundnuts)”
Claim · model-written summary
The authors suggest iron deficiency affects groundnut stomatal behavior through leaf chlorophyll content.
- Taxon
- groundnutsArachis hypogaeae1
- Treatment
- iron deficiencye1
- Compound
- chlorophylle0
- Outcome
- stomatal behavioure0
- Qualifier
- seems to be mediated through their effect on leaf chlorophyll contente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of these deficiencies on stomatal behaviour seems to be mediated through their effect on leaf chlorophyll content.”
e1“iron deficiency (induced in groundnuts)”
Claim · model-written summary
Foliar urea restored normal chlorophyll content and stomatal behavior in treated nitrogen-deficient maize leaves.
- Organ / stage
- chlorotic leavese0
- Treatment
- Foliar applications of ureae0
- Outcome
- normal chlorophyll content and normal stomatal behavioure0
- Direction
- restoree0
- Qualifier
- nitrogen‐deficiente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar applications of urea to chlorotic leaves of nitrogen‐deficient maize restore both normal chlorophyll content and normal stomatal behaviour to the treated leaves”
Claim · model-written summary
Maize chlorophyll content and stomatal behavior are related locally rather than systemically.
- Compound
- chlorophylle0
- Outcome
- stomatal behavioure0
- Qualifier
- related on a localized, rather than a systemic levele0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar applications of urea to chlorotic leaves of nitrogen‐deficient maize restore both normal chlorophyll content and normal stomatal behaviour to the treated leaves, indicating that both variables are related on a localized, rather than a systemic level.”
Claim · model-written summary
The groundnut chlorophyll–stomatal aperture relation was the same under nitrogen and iron deficiency.
- Taxon
- groundnutsArachis hypogaeae0
- Compound
- chlorophylle0
- Outcome
- stomatal aperturee0
- Direction
- samee0
- Qualifier
- regardless of whether chlorosis was caused by nitrogen or iron deficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In groundnuts the relation between chlorophyll content and stomatal aperture is the same, regardless of whether chlorosis was caused by nitrogen or iron deficiency.”
Claim · model-written summary
Chlorotic leaves had lower apparent water saturation deficit than green leaves.
- Organ / stage
- Chlorotic leavese0
- Outcome
- apparent water saturation deficite0
- Direction
- lowere0
- Comparator
- green leavese0
Not reportedTaxon
Verbatim
e0“Chlorotic leaves had a lower apparent water saturation deficit than green leaves.”
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