Abstract
Using phytotron to simulate high temperature environment,the study was made on the physiological characteristics of leaves of S.chinensis under different degree of high-temperature stress(CK,T1,T2) were studied.The results showed that diurnal change of net photosynthetic rate(Pn) of CK was double peak type,but those under T1 and T2 were single-peak type and they decreased by 17.4% and 35.5% respectively than CK.With the intensification of the stress temperature,transpiration rate(Tr) and stomata conductance(Gs) decreased significantly,while the intercellular CO2 concentration(Ci) increased.It showed that the decrease of Pn wasn't mainly stomata factor.Moreover,the leaf relative water content(LRWC) decreased significantly.The content of chlorophyll(Chl),relative conductivity,the content of malondialdehyde(MDA),the activity of peroxidase(POD) and superoxide dismutase(SOD),Proline(Pro) and soluble sugar increased significantly with the intensification of the stress temperature.The research indicated that S.chinensis had a good high-temperature resistance capability.
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Claims 11
Claim · model-written summary
Control net photosynthesis had a double peak daily pattern, while T1 and T2 had single peaks.
- Outcome
- diurnal change of net photosynthetic rate(Pn)e0
Not reportedTaxon
Verbatim
e0“diurnal change of net photosynthetic rate(Pn) of CK was double peak type,but those under T1 and T2 were single-peak type”
Claim · model-written summary
Under T1, net photosynthetic rate decreased by 17.4% relative to CK.
Not reportedTaxonOutcome
Verbatim
e0“those under T1 and T2 were single-peak type and they decreased by 17.4% and 35.5% respectively than CK”
Claim · model-written summary
Under T2, net photosynthetic rate decreased by 35.5% relative to CK.
Not reportedTaxonOutcome
Verbatim
e0“those under T1 and T2 were single-peak type and they decreased by 17.4% and 35.5% respectively than CK”
Claim · model-written summary
As temperature stress intensified, transpiration rate and stomatal conductance fell significantly.
- Treatment
- stress temperaturee0
- Outcome
- transpiration rate(Tr) and stomata conductance(Gs)e0
- Direction
- decreasede0
Not reportedTaxonComparator
Verbatim
e0“With the intensification of the stress temperature,transpiration rate(Tr) and stomata conductance(Gs) decreased significantly”
Claim · model-written summary
As temperature stress intensified, intercellular CO2 concentration increased.
Not reportedTaxonTreatmentComparator
Verbatim
e0“while the intercellular CO2 concentration(Ci) increased”
Claim · model-written summary
The decline in net photosynthesis was interpreted as not mainly due to stomatal factors.
Not reportedTaxon
Verbatim
e0“It showed that the decrease of Pn wasn't mainly stomata factor”
Claim · model-written summary
Leaf relative water content decreased significantly under heat stress.
Not reportedTaxonTreatmentComparator
Verbatim
e0“Moreover,the leaf relative water content(LRWC) decreased significantly”
Claim · model-written summary
Chlorophyll content, relative conductivity and malondialdehyde content increased significantly with temperature stress.
- Treatment
- stress temperaturee0
- Outcome
- content of chlorophyll(Chl),relative conductivity,the content of malondialdehyde(MDA)e0
- Direction
- increasede0
Not reportedTaxonComparator
Verbatim
e0“The content of chlorophyll(Chl),relative conductivity,the content of malondialdehyde(MDA),the activity of peroxidase(POD) and superoxide dismutase(SOD),Proline(Pro) and soluble sugar increased significantly with the intensification of the stress temperature”
Claim · model-written summary
Peroxidase and superoxide dismutase activity increased significantly with temperature stress.
- Treatment
- stress temperaturee0
- Outcome
- activity of peroxidase(POD) and superoxide dismutase(SOD)e0
- Direction
- increasede0
Not reportedTaxonComparator
Verbatim
e0“the activity of peroxidase(POD) and superoxide dismutase(SOD),Proline(Pro) and soluble sugar increased significantly with the intensification of the stress temperature”
Claim · model-written summary
Proline and soluble sugar increased significantly with temperature stress.
Not reportedTaxonComparator
Verbatim
e0“Proline(Pro) and soluble sugar increased significantly with the intensification of the stress temperature”
Claim · model-written summary
The authors inferred that S. chinensis has good high-temperature resistance.
- Taxon
- S.chinensis
Simmondsia chinensise0 - Outcome
- high-temperature resistance capabilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The research indicated that S.chinensis had a good high-temperature resistance capability”