Abstract
This study examined the influence of low temperature on the production of reactive oxygen species and antioxidant metabolism in two strawberry (Fragaria ananassa Duch.) cultivars (cv. Zoji and Toyonaka). Low temperature treatment was imposed by maintaining the plants at 0? for 2, 4, 6, 8, 12, 24, 48 and 72 h in an artificial intelligent growth chamber. During the period of low temperature treatments, the activities of peroxidative (POD), superoxide disumutase (SOD), catalase (CAT), ascorbate peroxidase (APX), dehydroascorbate (DHAR), glutathione reductase (GR), the production of O2- and H2O2, as well as the contents of antioxidant such as dehydroascorbate and reduced glutathione were up-regulated exception of the contents of ascorabte and chlorophyll in compared with the control. Meanwhile, cv. Toyonaka showed more tolerant to low temperatures than cv. Zoji since it showed higher activities of antioxidative enzymes, more contents of osmolytes (proline and soluble sugar) and less lipid peroxidation during the low temperature treatments. The present study suggested that plant had signal molecules sensing the environmental stress, following erecting its defensive system protective them against the damage caused by stress environment. However, if the stress were too powerful, plants could not response to acclimate that stress, the plants would be injured or even be dead finally. In the two cultivars examined, cv. Toyonaka has a more efficient antioxidant system against low temperature than cv. Zoji.
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Claims 8
Claim · model-written summary
Low temperature increased activities of POD, SOD and CAT relative to control.
- Taxon
- Strawberry
_single2.jpg?width=60)
Fragaria ×ananassat0 - Treatment
- Low Temperaturest1
- Outcome
- activities of peroxidative (POD), superoxide disumutase (SOD), catalase (CAT)e0
- Direction
- up-regulatede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“the activities of peroxidative (POD), superoxide disumutase (SOD), catalase (CAT), ascorbate peroxidase (APX), dehydroascorbate (DHAR), glutathione reductase (GR), the production of O2- and H2O2, as well as the contents of antioxidant such as dehydroascorbate and reduced glutathione were up-regulated exception of the contents of ascorabte and chlorophyll in compared with the control”
t0“Strawberry Leaves”
t1“Low Temperatures”
Claim · model-written summary
Low temperature increased APX, DHAR and GR activities relative to control.
- Taxon
- StrawberryFragaria ×ananassat0
- Treatment
- Low Temperaturest1
- Outcome
- ascorbate peroxidase (APX), dehydroascorbate (DHAR), glutathione reductase (GR)e0
- Direction
- up-regulatede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the activities of peroxidative (POD), superoxide disumutase (SOD), catalase (CAT), ascorbate peroxidase (APX), dehydroascorbate (DHAR), glutathione reductase (GR), the production of O2- and H2O2, as well as the contents of antioxidant such as dehydroascorbate and reduced glutathione were up-regulated exception of the contents of ascorabte and chlorophyll in compared with the control”
t0“Strawberry Leaves”
t1“Low Temperatures”
Claim · model-written summary
Low temperature increased O2- and H2O2 production relative to control.
- Taxon
- StrawberryFragaria ×ananassat0
- Treatment
- Low Temperaturest1
- Outcome
- production of O2- and H2O2e0
- Direction
- up-regulatede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the production of O2- and H2O2, as well as the contents of antioxidant such as dehydroascorbate and reduced glutathione were up-regulated exception of the contents of ascorabte and chlorophyll in compared with the control”
t0“Strawberry Leaves”
t1“Low Temperatures”
Claim · model-written summary
Low temperature increased dehydroascorbate and reduced glutathione relative to control.
- Taxon
- StrawberryFragaria ×ananassat0
- Treatment
- Low Temperaturest1
- Outcome
- contents of antioxidant such as dehydroascorbate and reduced glutathionee0
- Direction
- up-regulatede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the contents of antioxidant such as dehydroascorbate and reduced glutathione were up-regulated exception of the contents of ascorabte and chlorophyll in compared with the control”
t0“Strawberry Leaves”
t1“Low Temperatures”
Claim · model-written summary
Ascorbate and chlorophyll were exceptions to the low-temperature up-regulation.
- Taxon
- StrawberryFragaria ×ananassat0
- Treatment
- Low Temperaturest1
- Outcome
- contents of ascorabte and chlorophylle0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“up-regulated exception of the contents of ascorabte and chlorophyll in compared with the control”
t0“Strawberry Leaves”
t1“Low Temperatures”
Claim · model-written summary
Toyonaka was more low-temperature tolerant than Zoji and had higher antioxidant enzyme activity.
- Taxon
- StrawberryFragaria ×ananassat0
- Material
- cv. Toyonakae0
- Outcome
- activities of antioxidative enzymese0
- Direction
- highere0
- Comparator
- cv. Zojie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cv. Toyonaka showed more tolerant to low temperatures than cv. Zoji since it showed higher activities of antioxidative enzymes”
t0“Strawberry Leaves”
Claim · model-written summary
Toyonaka had more proline and soluble sugar than Zoji under low temperature.
- Taxon
- StrawberryFragaria ×ananassat0
- Material
- cv. Toyonakae1
- Outcome
- contents of osmolytes (proline and soluble sugar)e0
- Direction
- moree0
- Comparator
- cv. Zojie1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“more contents of osmolytes (proline and soluble sugar) and less lipid peroxidation during the low temperature treatments”
e1“cv. Toyonaka showed more tolerant to low temperatures than cv. Zoji”
t0“Strawberry Leaves”
Claim · model-written summary
Toyonaka had less lipid peroxidation than Zoji under low temperature.
- Taxon
- StrawberryFragaria ×ananassat0
- Material
- cv. Toyonakae1
- Outcome
- lipid peroxidatione0
- Direction
- lesse0
- Comparator
- cv. Zojie1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“more contents of osmolytes (proline and soluble sugar) and less lipid peroxidation during the low temperature treatments”
e1“cv. Toyonaka showed more tolerant to low temperatures than cv. Zoji”
t0“Strawberry Leaves”
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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.