Abstract
Systematic salt tolerance-related physiological mechanisms in roots and shoots of halophyte Dongying wild soybean have not yet been thoroughly studied. In this study, photosynthesis, modulated 820-nm reflection, chlorophyll a fluorescence, and Na+ distribution in cultivated (Gmc) and wild (Gsw) soybean leaves of grafted soybean plants were investigated after NaCl treatment. Results showed that the decreases in photosynthetic rate, performance index, active P700 content, and plastocyanin reduction were significantly greater in the Gsw leaves than those in the Gmc leaves. The observed increases in the Na+ concentration in the Gsw leaves were likely responsible for the severe decrease in the photosynthetic activity of grafted plants. We suggest that Na+ accumulation in Gsw roots, which prevents the transport of Na+ from the roots to the shoots, effectively maintains the concentration of Na+ at a comparatively low level in the leaves to prevent the destruction of the photosynthetic apparatus by salt.
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Claims 5
Claim · model-written summary
Under NaCl, decreases in photosynthetic rate, performance index and active P700 content were significantly greater in Gsw than in Gmc leaves.
- Taxon
- soybean
Glycine maxe2 - Material
- Gswe2
- Organ / stage
- leavese2
- Treatment
- NaCle2
- Outcome
- decreases in photosynthetic rate, performance index, active P700 contente1
- Direction
- greatere1
- Comparator
- Gmce2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the decreases in photosynthetic rate, performance index, active P700 content, and plastocyanin reduction were significantly greater in the Gsw leaves than those in the Gmc leaves”
e2“photosynthesis, modulated 820-nm reflection, chlorophyll a fluorescence, and Na+ distribution in cultivated (Gmc) and wild (Gsw) soybean leaves of grafted soybean plants were investigated after NaCl treatment”
Claim · model-written summary
Under NaCl, the decrease in plastocyanin reduction was significantly greater in Gsw than in Gmc leaves.
- Taxon
- soybeanGlycine maxe2
- Material
- Gswe2
- Organ / stage
- leavese2
- Treatment
- NaCle2
- Outcome
- plastocyanin reductione1
- Direction
- greatere1
- Comparator
- Gmce2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the decreases in photosynthetic rate, performance index, active P700 content, and plastocyanin reduction were significantly greater in the Gsw leaves than those in the Gmc leaves”
e2“photosynthesis, modulated 820-nm reflection, chlorophyll a fluorescence, and Na+ distribution in cultivated (Gmc) and wild (Gsw) soybean leaves of grafted soybean plants were investigated after NaCl treatment”
Claim · model-written summary
Na+ concentration increased in the leaves of Gsw plants.
- Taxon
- soybeanGlycine maxe2
- Material
- Gswe3
- Organ / stage
- leavese3
- Outcome
- Na+ concentratione3
- Direction
- increasese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“photosynthesis, modulated 820-nm reflection, chlorophyll a fluorescence, and Na+ distribution in cultivated (Gmc) and wild (Gsw) soybean leaves of grafted soybean plants were investigated after NaCl treatment”
e3“The observed increases in the Na+ concentration in the Gsw leaves”
Claim · model-written summary
Increased Na+ in Gsw leaves is likely responsible for the severe decrease in photosynthetic activity of grafted plants.
- Taxon
- soybeanGlycine maxe2
- Compound
- Na+e4
- Outcome
- photosynthetic activitye4
- Qualifier
- likely responsiblee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“photosynthesis, modulated 820-nm reflection, chlorophyll a fluorescence, and Na+ distribution in cultivated (Gmc) and wild (Gsw) soybean leaves of grafted soybean plants were investigated after NaCl treatment”
e4“The observed increases in the Na+ concentration in the Gsw leaves were likely responsible for the severe decrease in the photosynthetic activity of grafted plants”
Claim · model-written summary
Na+ accumulation in wild soybean roots is suggested to keep Na+ low in the leaves by blocking its transport to the shoots.
- Taxon
- soybeanGlycine maxe2
- Organ / stage
- rootse5
- Compound
- Na+e5
- Outcome
- concentration of Na+e5
- Qualifier
- prevents the transport of Na+ from the roots to the shootse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“photosynthesis, modulated 820-nm reflection, chlorophyll a fluorescence, and Na+ distribution in cultivated (Gmc) and wild (Gsw) soybean leaves of grafted soybean plants were investigated after NaCl treatment”
e5“We suggest that Na+ accumulation in Gsw roots, which prevents the transport of Na+ from the roots to the shoots, effectively maintains the concentration of Na+ at a comparatively low level in the leaves”
The same questions in other papers
sodium chloride · physiology: photosynthesis · Glycine max (soybean)Positive and negative results
9 papers in the same direction as this paper · 3 in the opposite direction
- negative
- positive
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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.