Abstract
The effects of magnesium stress on the growth and photosynthetic character of cucumber seedlings are studied at various temperatures using artificial climate box.This is done to investigate the functional mechanism of magnesium in cucumbers.The results show that at low temperature,magnesium stress evidently inhibits plant growth,while at suitable temperatures it decreases the plant diameter,total number of leaves,leaf area,and dry weight of the above-ground parts,and increases the plant height and root/shoot ratio.Excessive magnesium promotes below-ground cucumber growth.The value of chlorphyl A/chlorophyl B(Chla/Chlb) increases more under conditions of magnesium deficiency than under magnesium excess.The Chla,Chlb and Cxc content decreases when magnesium is deficient,increase when excessive magnesium exists at suitable temperatures,but decreases if excessive magnesium exists at low temperatures.Pn and Gs decrease under magnesium stress,and are at the lowest level when excessive magnesium exists at low temperatures.The effects of magnesium stress on Ci,WUE,Tr and Ls vary at different magnesium concentrations and temperatures.The main factor limiting photosynthesis of cucumber seedlings is non-stomata factor when magnesium is deficient, but is a stomata factor if there is excessive magnesium.
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Claims 12
Claim · model-written summary
At low temperature magnesium stress inhibited cucumber seedling growth.
- Taxon
- cucumber seedlings
Cucumis sativust0 - Treatment
- magnesium stresse0
- Outcome
- plant growthe0
- Direction
- inhibitse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at low temperature,magnesium stress evidently inhibits plant growth”
t0“cucumber seedlings”
Claim · model-written summary
At suitable temperatures magnesium stress decreased cucumber seedling diameter, leaf number, leaf area and aboveground dry weight.
- Taxon
- cucumber seedlingsCucumis sativust0
- Treatment
- magnesium stresst1
- Outcome
- plant diameter,total number of leaves,leaf area,and dry weight of the above-ground partse0
- Direction
- decreasese0
- Qualifier
- suitable temperaturese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at suitable temperatures it decreases the plant diameter,total number of leaves,leaf area,and dry weight of the above-ground parts”
t0“cucumber seedlings”
t1“magnesium stress”
Claim · model-written summary
At suitable temperatures magnesium stress increased cucumber seedling height and root/shoot ratio.
- Taxon
- cucumber seedlingsCucumis sativust0
- Outcome
- plant height and root/shoot ratioe0
- Direction
- increasese0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increases the plant height and root/shoot ratio”
t0“cucumber seedlings”
Claim · model-written summary
Excess magnesium promoted belowground cucumber growth.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- Excessive magnesiume0
- Outcome
- below-ground cucumber growthe0
- Direction
- promotese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Excessive magnesium promotes below-ground cucumber growth”
Claim · model-written summary
The chlorophyll A/B ratio increased more under magnesium deficiency than excess.
- Taxon
- cucumber seedlingsCucumis sativust0
- Treatment
- magnesium deficiencye0
- Outcome
- chlorphyl A/chlorophyl B(Chla/Chlb)e0
- Direction
- increases moree0
- Comparator
- magnesium excesse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The value of chlorphyl A/chlorophyl B(Chla/Chlb) increases more under conditions of magnesium deficiency than under magnesium excess”
t0“cucumber seedlings”
Claim · model-written summary
Magnesium deficiency decreased Chla, Chlb and Cxc content.
- Taxon
- cucumber seedlingsCucumis sativust0
- Treatment
- magnesium is deficiente0
- Outcome
- Chla,Chlb and Cxc contente0
- Direction
- decreasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Chla,Chlb and Cxc content decreases when magnesium is deficient”
t0“cucumber seedlings”
Claim · model-written summary
Excess magnesium increased Chla, Chlb and Cxc content at suitable temperatures.
- Taxon
- cucumber seedlingsCucumis sativust0
- Treatment
- excessive magnesiume0
- Outcome
- Chla,Chlb and Cxc contente0
- Direction
- increasee0
- Qualifier
- suitable temperaturese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chla,Chlb and Cxc content decreases when magnesium is deficient,increase when excessive magnesium exists at suitable temperatures”
t0“cucumber seedlings”
Claim · model-written summary
Excess magnesium decreased Chla, Chlb and Cxc content at low temperatures.
- Taxon
- cucumber seedlingsCucumis sativust0
- Treatment
- excessive magnesiume0
- Outcome
- Chla,Chlb and Cxc contente0
- Direction
- decreasese0
- Qualifier
- low temperaturese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Chla,Chlb and Cxc content decreases when magnesium is deficient,increase when excessive magnesium exists at suitable temperatures,but decreases if excessive magnesium exists at low temperatures”
t0“cucumber seedlings”
Claim · model-written summary
Magnesium stress decreased Pn and Gs, with the lowest levels under excess magnesium at low temperature.
- Taxon
- cucumber seedlingsCucumis sativust0
- Treatment
- magnesium stresse0
- Outcome
- Pn and Gse0
- Direction
- decreasee0
- Qualifier
- excessive magnesium exists at low temperaturese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pn and Gs decrease under magnesium stress,and are at the lowest level when excessive magnesium exists at low temperatures”
t0“cucumber seedlings”
Claim · model-written summary
Effects on Ci, WUE, Tr and Ls varied with magnesium concentration and temperature.
- Taxon
- cucumber seedlingsCucumis sativust0
- Treatment
- magnesium stresse0
- Outcome
- Ci,WUE,Tr and Lse0
- Qualifier
- different magnesium concentrations and temperaturese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of magnesium stress on Ci,WUE,Tr and Ls vary at different magnesium concentrations and temperatures”
t0“cucumber seedlings”
Claim · model-written summary
The authors attributed photosynthetic limitation under magnesium deficiency to a non-stomatal factor.
- Taxon
- cucumber seedlingsCucumis sativuse0
- Treatment
- magnesium is deficiente0
- Outcome
- photosynthesise0
- Qualifier
- non-stomata factore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The main factor limiting photosynthesis of cucumber seedlings is non-stomata factor when magnesium is deficient”
Claim · model-written summary
The authors attributed photosynthetic limitation under excess magnesium to a stomatal factor.
- Taxon
- cucumber seedlingsCucumis sativuse0
- Treatment
- excessive magnesiume0
- Outcome
- photosynthesise0
- Qualifier
- stomata factore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The main factor limiting photosynthesis of cucumber seedlings is non-stomata factor when magnesium is deficient, but is a stomata factor if there is excessive magnesium”
The same questions in other papers
magnesium atom · growth · Cucumis sativus (cucumber)Positive and negative results
1 paper in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- negative
2 papers more in this group
See all 6 papers →magnesium atom · molecular: metabolites · Cucumis sativus (cucumber)Results agree
1 paper in the same direction as this paper
- positive
magnesium atom · physiology: photosynthesis · Cucumis sativus (cucumber)Results agree
3 papers in the same direction as this paper
- negative
- negative
- negative
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.