Abstract
150,300 and 350 mmol/L NaCl and Na_2SO_4 were used to treat the seed-originated seedlings of Amygdalus communis L.and A.communis var.persiooides in greenhouse.Then the chlorophyll contents,net photosynthetic rates and stomatal conductance and intercellular CO_2 concentrations in their leaves were determined and the ultra-structures of the leaves were observed.It was shown that(1) both Amygdalus communis L.and A.communis var.persiooides presented the highest chl a and chl b contents at low concentrations of the salts and the lowest chl a and chl b contents at higher concentrations of the salts,and the chlorophyll contents with Na_2SO_4 were lower than those with NaCl;(2) The net photosynthetic rates of Amygdalus communis L.and A.communis var.persiooides declined with increased salt concentration and the decrement in net photosynthetic rate was larger in Amygdalus communis L.;(3) The intercellular CO_2 concentration of A.communis var.persiooides increased with increased salt concentrations and the variation did not appeared regular;(4) The leaf stomatal conductance of the two declined with increased salt concentrations;(5) The salt stresses resulted in the chloroplast grana and stroma distorted and the choloroplast thylakoids swelling and the effects become intensified with increased salt concentrations,the chloroplasts swelling from elliptical shape to round shape and the chloroplast membrane disintegrating,and the chloroplasts of Amygdalus communis L.were more sensitive to the salt stresses.These results indicated that two salt stresses had different action mechanisms to damage the plants.A.communis var.persiooides was more tolerant to the salt stresses than Amygdalus communis L.
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Claims 11
Claim · model-written summary
Both almond taxa had highest chlorophyll a and b at low salt concentrations and lowest at higher concentrations.
- Taxon
- Amygdalus communis L.and A.communis var.persiooides
Prunus dulcise0 - Treatment
- low concentrations of the saltse0
- Outcome
- chl a and chl b contentse0
- Direction
- higheste0
- Comparator
- higher concentrations of the saltse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both Amygdalus communis L.and A.communis var.persiooides presented the highest chl a and chl b contents at low concentrations of the salts and the lowest chl a and chl b contents at higher concentrations of the salts”
Claim · model-written summary
Chlorophyll contents were lower with sodium sulfate than sodium chloride.
- Taxon
- AlmondPrunus dulcist0
- Treatment
- Na_2SO_4e0
- Outcome
- chlorophyll contentse0
- Direction
- lowere0
- Comparator
- NaCle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the chlorophyll contents with Na_2SO_4 were lower than those with NaCl”
t0“Almond”
Claim · model-written summary
Net photosynthetic rates declined with rising salt concentration in both taxa.
- Taxon
- Amygdalus communis L.and A.communis var.persiooidesPrunus dulcise0
- Treatment
- increased salt concentratione0
- Outcome
- net photosynthetic ratese0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The net photosynthetic rates of Amygdalus communis L.and A.communis var.persiooides declined with increased salt concentration”
Claim · model-written summary
The photosynthetic rate decrease was larger in Amygdalus communis.
- Taxon
- Amygdalus communis L.Prunus dulcise0
- Outcome
- decrement in net photosynthetic ratee0
- Direction
- largere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the decrement in net photosynthetic rate was larger in Amygdalus communis L.”
Claim · model-written summary
Intercellular CO2 concentration increased with salt concentration in A.communis var.persiooides.
- Taxon
- A.communis var.persiooidesPrunus dulcise0
- Treatment
- increased salt concentrationse0
- Outcome
- intercellular CO_2 concentratione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The intercellular CO_2 concentration of A.communis var.persiooides increased with increased salt concentrations”
Claim · model-written summary
Stomatal conductance declined as salt concentrations increased in both taxa.
- Taxon
- AlmondPrunus dulcist0
- Treatment
- increased salt concentrationse0
- Outcome
- leaf stomatal conductancee0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The leaf stomatal conductance of the two declined with increased salt concentrations”
t0“Almond”
Claim · model-written summary
Salt stress distorted chloroplast grana and stroma and swelled thylakoids, intensifying at higher concentrations.
- Taxon
- AlmondPrunus dulcist0
- Treatment
- salt stressese0
- Outcome
- chloroplast grana and stroma distorted and the choloroplast thylakoids swellinge0
- Direction
- intensifiede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The salt stresses resulted in the chloroplast grana and stroma distorted and the choloroplast thylakoids swelling and the effects become intensified with increased salt concentrations”
t0“Almond”
Claim · model-written summary
Chloroplasts swelled from elliptical to round and membranes disintegrated under salt stress.
- Taxon
- AlmondPrunus dulcist0
- Outcome
- chloroplasts swelling from elliptical shape to round shape and the chloroplast membrane disintegratinge0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the chloroplasts swelling from elliptical shape to round shape and the chloroplast membrane disintegrating”
t0“Almond”
Claim · model-written summary
Amygdalus communis chloroplasts were more sensitive to salt stress.
- Taxon
- Amygdalus communis L.Prunus dulcise0
- Treatment
- salt stressese0
- Outcome
- chloroplastse0
- Direction
- more sensitivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the chloroplasts of Amygdalus communis L.were more sensitive to the salt stresses”
Claim · model-written summary
The authors concluded that the two salts damage plants through different mechanisms.
- Taxon
- AlmondPrunus dulcist0
- Outcome
- damage the plantse0
- Qualifier
- different action mechanismse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two salt stresses had different action mechanisms to damage the plants”
t0“Almond”
Claim · model-written summary
A.communis var.persiooides was more salt tolerant than Amygdalus communis.
- Taxon
- A.communis var.persiooidesPrunus dulcise0
- Outcome
- tolerant to the salt stressese0
- Direction
- more tolerante0
- Comparator
- Amygdalus communis L.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A.communis var.persiooides was more tolerant to the salt stresses than Amygdalus communis L.”
The same questions in other papers
salinity · physiology: photosynthesis · Prunus dulcis (almond)Results agree
2 papers in the same direction as this paper
- negative
- negative
salinity · molecular: metabolites · Prunus dulcis (almond)Results agree
2 papers in the same direction as this paper
- 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.