Abstract
To determine how the use of a given rootstock can influence the functioning of the photosynthetic apparatus of the scion under salt stress, the growth, gas exchange, photosystem II (PSII) efficiency, xanthophyll cycle, and chloroplast ultrastructure of nongrafted, self-grafted, and pumpkin-grafted (hereafter referred to as rootstock-grafted) cucumber (Cucumis sativus L.) plants were investigated at day 15 after being treated with 90 mM NaCl. The reductions in plant growth of the rootstock-grafted plants were lower than those of the nongrafted and self-grafted plants under 90 mM NaCl. The net photosynthetic rate, stomatal conductance, maximal and effective quantum yield of PSII photochemistry, photochemical quenching coefficient, and effective quantum-use efficiency of PSII in the light-adapted state of the nongrafted and self-grafted plants were significantly decreased under 90 mM NaCl. However, these reductions were alleviated when the cucumber plants were grafted onto the pumpkin (Cucurbita moschata Duch.) rootstock. The intercellular CO2 concentrations were significantly increased in the nongrafted and self-grafted plants under 90 mM NaCl, whereas it was decreased in the rootstock-grafted plants. Nonphotochemical quenching (NPQ) and the deepoxidation state of the xanthophyll cycle were significantly increased under 90 mM NaCl, particularly in the rootstockgrafted plants, suggesting the rootstock-grafted plants had higher potential to dissipate excess excitation energy and reduce the probability of photodamage to PSII. Under 90 mM NaCl, the number of grana was reduced, the thylakoids were swollen, and starch granules accumulated in all plants. However, the damage of chloroplast ultrastructure was alleviated in the rootstock-grafted plants. Taken together, the use of C. moschata rootstock alleviated salt stress in cucumber plants by delaying photoinhibition, probably due to a lower incidence of both stomatal and nonstomatal factors limiting photosynthesis.
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 14
Claim · model-written summary
Growth reduction under 90 mM NaCl was smaller in rootstock-grafted cucumber than in nongrafted and self-grafted plants.
- Taxon
- Cucumis sativus L.
Cucumis sativuse0 - Material
- rootstock-graftede0
- Treatment
- 90 mM NaCle1
- Outcome
- reductions in plant growthe1
- Direction
- lowere1
- Comparator
- nongrafted and self-grafted plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pumpkin-grafted (hereafter referred to as rootstock-grafted) cucumber (Cucumis sativus L.) plants”
e1“The reductions in plant growth of the rootstock-grafted plants were lower than those of the nongrafted and self-grafted plants under 90 mM NaCl”
Claim · model-written summary
Under 90 mM NaCl, net photosynthetic rate and stomatal conductance were significantly decreased in nongrafted and self-grafted cucumber.
- Taxon
- Cucumis sativus L.Cucumis sativuse0
- Material
- nongrafted and self-grafted plantse2
- Treatment
- 90 mM NaCle2
- Outcome
- net photosynthetic rate, stomatal conductancee2
- Direction
- significantly decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pumpkin-grafted (hereafter referred to as rootstock-grafted) cucumber (Cucumis sativus L.) plants”
e2“The net photosynthetic rate, stomatal conductance, maximal and effective quantum yield of PSII photochemistry, photochemical quenching coefficient, and effective quantum-use efficiency of PSII in the light-adapted state of the nongrafted and self-grafted plants were significantly decreased under 90 mM NaCl”
Claim · model-written summary
Under 90 mM NaCl, PSII photochemical efficiency and quenching traits were significantly decreased in nongrafted and self-grafted cucumber.
- Taxon
- Cucumis sativus L.Cucumis sativuse0
- Material
- nongrafted and self-grafted plantse2
- Treatment
- 90 mM NaCle2
- Outcome
- maximal and effective quantum yield of PSII photochemistry, photochemical quenching coefficient, and effective quantum-use efficiency of PSIIe2
- Direction
- significantly decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pumpkin-grafted (hereafter referred to as rootstock-grafted) cucumber (Cucumis sativus L.) plants”
e2“The net photosynthetic rate, stomatal conductance, maximal and effective quantum yield of PSII photochemistry, photochemical quenching coefficient, and effective quantum-use efficiency of PSII in the light-adapted state of the nongrafted and self-grafted plants were significantly decreased under 90 mM NaCl”
Claim · model-written summary
Grafting cucumber onto pumpkin rootstock alleviated the NaCl-induced reductions.
- Taxon
- Cucumis sativus L.Cucumis sativuse0
- Treatment
- grafted onto the pumpkin (Cucurbita moschata Duch.) rootstocke3
- Outcome
- these reductionse3
- Direction
- alleviatede3
- Comparator
- nongrafted and self-grafted plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pumpkin-grafted (hereafter referred to as rootstock-grafted) cucumber (Cucumis sativus L.) plants”
e2“The net photosynthetic rate, stomatal conductance, maximal and effective quantum yield of PSII photochemistry, photochemical quenching coefficient, and effective quantum-use efficiency of PSII in the light-adapted state of the nongrafted and self-grafted plants were significantly decreased under 90 mM NaCl”
e3“However, these reductions were alleviated when the cucumber plants were grafted onto the pumpkin (Cucurbita moschata Duch.) rootstock”
Claim · model-written summary
Under 90 mM NaCl, intercellular CO2 concentration was significantly increased in nongrafted and self-grafted cucumber.
- Taxon
- Cucumis sativus L.Cucumis sativuse0
- Material
- nongrafted and self-grafted plantse4
- Treatment
- 90 mM NaCle4
- Outcome
- intercellular CO2 concentrationse4
- Direction
- significantly increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pumpkin-grafted (hereafter referred to as rootstock-grafted) cucumber (Cucumis sativus L.) plants”
e4“The intercellular CO2 concentrations were significantly increased in the nongrafted and self-grafted plants under 90 mM NaCl, whereas it was decreased in the rootstock-grafted plants”
Claim · model-written summary
Under 90 mM NaCl, intercellular CO2 concentration was decreased in rootstock-grafted cucumber.
- Taxon
- Cucumis sativus L.Cucumis sativuse0
- Material
- rootstock-grafted plantse4
- Treatment
- 90 mM NaCle4
- Outcome
- intercellular CO2 concentrationse4
- Direction
- was decreasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pumpkin-grafted (hereafter referred to as rootstock-grafted) cucumber (Cucumis sativus L.) plants”
e4“The intercellular CO2 concentrations were significantly increased in the nongrafted and self-grafted plants under 90 mM NaCl, whereas it was decreased in the rootstock-grafted plants”
Claim · model-written summary
Under 90 mM NaCl, NPQ and the deepoxidation state of the xanthophyll cycle were significantly increased, particularly in rootstock-grafted cucumber.
- Taxon
- Cucumis sativus L.Cucumis sativuse0
- Treatment
- 90 mM NaCle5
- Outcome
- Nonphotochemical quenching (NPQ) and the deepoxidation state of the xanthophyll cyclee5
- Direction
- significantly increasede5
- Qualifier
- particularly in the rootstockgrafted plantse5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pumpkin-grafted (hereafter referred to as rootstock-grafted) cucumber (Cucumis sativus L.) plants”
e5“Nonphotochemical quenching (NPQ) and the deepoxidation state of the xanthophyll cycle were significantly increased under 90 mM NaCl, particularly in the rootstockgrafted plants”
Claim · model-written summary
Rootstock-grafted cucumber appears to have higher potential to dissipate excess excitation energy, reducing photodamage to PSII.
- Taxon
- Cucumis sativus L.Cucumis sativuse0
- Material
- rootstock-grafted plantse6
- Outcome
- higher potential to dissipate excess excitation energye6
- Qualifier
- reduce the probability of photodamage to PSIIe6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pumpkin-grafted (hereafter referred to as rootstock-grafted) cucumber (Cucumis sativus L.) plants”
e6“suggesting the rootstock-grafted plants had higher potential to dissipate excess excitation energy and reduce the probability of photodamage to PSII”
Claim · model-written summary
Under 90 mM NaCl, the number of grana was reduced in cucumber chloroplasts.
- Taxon
- Cucumis sativus L.Cucumis sativuse0
- Treatment
- 90 mM NaCle7
- Outcome
- the number of granae7
- Direction
- was reducede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pumpkin-grafted (hereafter referred to as rootstock-grafted) cucumber (Cucumis sativus L.) plants”
e7“Under 90 mM NaCl, the number of grana was reduced, the thylakoids were swollen, and starch granules accumulated in all plants”
Claim · model-written summary
Under 90 mM NaCl, the thylakoids of cucumber chloroplasts were swollen.
- Taxon
- Cucumis sativus L.Cucumis sativuse0
- Treatment
- 90 mM NaCle7
- Outcome
- the thylakoidse7
- Direction
- were swollene7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pumpkin-grafted (hereafter referred to as rootstock-grafted) cucumber (Cucumis sativus L.) plants”
e7“Under 90 mM NaCl, the number of grana was reduced, the thylakoids were swollen, and starch granules accumulated in all plants”
Claim · model-written summary
Under 90 mM NaCl, starch granules accumulated in cucumber chloroplasts.
- Taxon
- Cucumis sativus L.Cucumis sativuse0
- Treatment
- 90 mM NaCle7
- Outcome
- starch granulese7
- Direction
- accumulatede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pumpkin-grafted (hereafter referred to as rootstock-grafted) cucumber (Cucumis sativus L.) plants”
e7“Under 90 mM NaCl, the number of grana was reduced, the thylakoids were swollen, and starch granules accumulated in all plants”
Claim · model-written summary
Chloroplast ultrastructure damage under NaCl was alleviated in rootstock-grafted cucumber.
- Taxon
- Cucumis sativus L.Cucumis sativuse0
- Material
- rootstock-grafted plantse5
- Treatment
- 90 mM NaCle7
- Outcome
- the damage of chloroplast ultrastructuree5
- Direction
- was alleviatede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pumpkin-grafted (hereafter referred to as rootstock-grafted) cucumber (Cucumis sativus L.) plants”
e5“However, the damage of chloroplast ultrastructure was alleviated in the rootstock-grafted plants”
e7“Under 90 mM NaCl, the number of grana was reduced, the thylakoids were swollen, and starch granules accumulated in all plants”
Claim · model-written summary
Use of C. moschata rootstock alleviated salt stress in cucumber plants.
- Taxon
- Cucumis sativus L.Cucumis sativuse0
- Treatment
- the use of C. moschata rootstocke6
- Outcome
- salt stresse6
- Direction
- alleviatede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pumpkin-grafted (hereafter referred to as rootstock-grafted) cucumber (Cucumis sativus L.) plants”
e6“Taken together, the use of C. moschata rootstock alleviated salt stress in cucumber plants by delaying photoinhibition, probably due to a lower incidence of both stomatal and nonstomatal factors limiting photosynthesis”
Claim · model-written summary
Rootstock use may alleviate photoinhibition in cucumber, probably through fewer stomatal and nonstomatal limits on photosynthesis.
- Taxon
- Cucumis sativus L.Cucumis sativuse0
- Outcome
- delaying photoinhibitione6
- Qualifier
- probably due to a lower incidence of both stomatal and nonstomatal factors limiting photosynthesise6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pumpkin-grafted (hereafter referred to as rootstock-grafted) cucumber (Cucumis sativus L.) plants”
e6“Taken together, the use of C. moschata rootstock alleviated salt stress in cucumber plants by delaying photoinhibition, probably due to a lower incidence of both stomatal and nonstomatal factors limiting photosynthesis”
The same questions in other papers
sodium chloride · physiology: photosynthesis · Cucumis sativus (cucumber)Results differ
16 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
14 papers more in this group
See all 18 papers →sodium chloride · growth · Cucumis sativus (cucumber)Results differ
11 papers in the same direction as this paper · 41 in the opposite direction
- negative
- negative
- negative
49 papers more in this group
See all 53 papers →sodium chloride · quality: sugar starch · Cucumis sativus (cucumber)Positive and negative results
2 in the opposite direction
- positive
- positive
sodium chloride · pest · Cucumis sativus (cucumber)Positive and negative results
2 in the opposite direction
- negative
- negative
sodium chloride · physiology: gas exchange · Cucumis sativus (cucumber)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- negative
1 paper more in this group
See all 5 papers →sodium chloride · molecular: metabolites · Cucumis sativus (cucumber)Positive and negative results
2 papers in the same direction as this paper · 10 in the opposite direction
- negative
- negative
- negative
9 papers more in this group
See all 13 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.