Abstract
Hydroponically grown cucumber plants were exposed to 14-d period of salinity (0, 50, 100 mM NaCl). NaCl caused reduction in the relative water content in the leaves. The Na+ content increased and the K+ content decreased. The net photosynthetic rate, stomatal conductance and transpiration rate were markedly decreased by all of the salt treatments. Salinity decreased also the maximum quantum efficiency of photosystem 2 (PS 2) determined as the variable to maximum fluorescence ratio, the photochemical quantum yield of PS 2 and the photochemical fluorescence quenching, while the non-photochemical quenching increased. Above results indicate that NaCl affects photosynthesis through both stomata closure and non-stomatal factors.
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Claims 7
Claim · model-written summary
NaCl reduced leaf relative water content.
- Taxon
- cucumber
Cucumis sativuse1 - Organ / stage
- leavese0
- Treatment
- NaCle0
- Outcome
- relative water content in the leavese0
- Direction
- reductione0
- Comparator
- 0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NaCl caused reduction in the relative water content in the leaves.”
e1“cucumber plants were exposed to 14-d period of salinity (0, 50, 100 mM NaCl)”
Claim · model-written summary
NaCl increased leaf Na+ content.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Na+ content increased and the K+ content decreased.”
e1“cucumber plants were exposed to 14-d period of salinity (0, 50, 100 mM NaCl)”
Claim · model-written summary
NaCl decreased leaf K+ content.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Na+ content increased and the K+ content decreased.”
e1“cucumber plants were exposed to 14-d period of salinity (0, 50, 100 mM NaCl)”
Claim · model-written summary
Salt treatments decreased net photosynthetic rate, stomatal conductance, and transpiration rate.
- Taxon
- cucumberCucumis sativuse1
- Treatment
- salt treatmentse0
- Outcome
- net photosynthetic rate, stomatal conductance and transpiration ratee0
- Direction
- decreasede0
- Comparator
- 0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The net photosynthetic rate, stomatal conductance and transpiration rate were markedly decreased by all of the salt treatments.”
e1“cucumber plants were exposed to 14-d period of salinity (0, 50, 100 mM NaCl)”
Claim · model-written summary
Salinity decreased maximum PS 2 quantum efficiency, photochemical quantum yield, and photochemical fluorescence quenching.
- Taxon
- cucumberCucumis sativuse1
- Treatment
- Salinitye0
- Outcome
- maximum quantum efficiency of photosystem 2 (PS 2) determined as the variable to maximum fluorescence ratio, the photochemical quantum yield of PS 2 and the photochemical fluorescence quenchinge0
- Direction
- decreasede0
- Comparator
- 0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity decreased also the maximum quantum efficiency of photosystem 2 (PS 2) determined as the variable to maximum fluorescence ratio, the photochemical quantum yield of PS 2 and the photochemical fluorescence quenching, while the non-photochemical quenching increased.”
e1“cucumber plants were exposed to 14-d period of salinity (0, 50, 100 mM NaCl)”
Claim · model-written summary
Salinity increased non-photochemical quenching.
- Taxon
- cucumberCucumis sativuse1
- Treatment
- Salinitye2
- Outcome
- non-photochemical quenchinge0
- Direction
- increasede0
- Comparator
- 0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the non-photochemical quenching increased.”
e1“cucumber plants were exposed to 14-d period of salinity (0, 50, 100 mM NaCl)”
e2“Salinity decreased also the maximum quantum efficiency of photosystem 2”
Claim · model-written summary
The authors infer that NaCl alters photosynthesis through stomatal closure and non-stomatal factors.
- Taxon
- cucumberCucumis sativuse1
- Treatment
- NaCle0
- Outcome
- photosynthesise0
- Qualifier
- stomata closure and non-stomatal factorse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NaCl affects photosynthesis through both stomata closure and non-stomatal factors.”
e1“cucumber plants”
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See all 22 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.