Abstract
A hydroponic experiment was carried out cucumber seedlings to explore the effects of exogenous CaCl2,LaCl3 and TFP on isoenzymes of superoxide dismutase(SOD),peroxidase(POD) and catalase(CAT) in roots of the cucumber seedlings under hypoxic stress.The results showed that the abundances of SOD and CAT isoenzymes in hypoxia treatment were lower than that of contrast in day 2,and were higher in day 4 and day 6.The abundance of POD isozyme was higher than that of contrast during treatment.Application 4 mmol·L-1 CaCl2 in nutrient solution significantly alleviated the hypoxia stress on the cucumber root system.The activity of SOD,POD and CAT isoenzymes were significantly improved compared with hypoxic stress treatment.Application 50 μmol·L-1 LaCl3 in nutrient solution,calcium channel inhibitor,significantly inhibited the SOD,POD and CAT isoenzymes activity compared with hypoxic stress treatment.The results indicating that the absorption of calcium ion plays an important role under hypoxic stress.Application 20 μmol·L-1 trifluoperazine(TFP) in nutrient solution caused intense fluctuation of SOD,POD and CAT isoenzymes.The abundances of SOD and CAT isoenzymes rapidly in day 2,and were rapidly down in day 4 and day 6 and the abundance of POD isoenzymes rapidly down during treatment.This indicated that exogenous Ca2+ increased Ca2+ transport to the plant,improved the hypoxia signal transmission to the body,and enhanced the scavenging of reactive oxygen species in plant cell under hypoxic stress.Thereby,exogenous Ca2+ enhanced the ability of hypoxia-resistant of cucumber plants.
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Claims 10
Claim · model-written summary
Under hypoxia, SOD and CAT isoenzyme abundance in cucumber seedling roots was lower than in the contrast on day 2.
- Taxon
- cucumber seedlings
Cucumis sativuse0 - Organ / stage
- rootse0
- Treatment
- hypoxia treatmente1
- Outcome
- abundances of SOD and CAT isoenzymese1
- Direction
- lowere1
- Qualifier
- in day 2e1
- Comparator
- contraste1
- Setting
- hydroponic experimente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A hydroponic experiment was carried out cucumber seedlings to explore the effects of exogenous CaCl2,LaCl3 and TFP on isoenzymes of superoxide dismutase(SOD),peroxidase(POD) and catalase(CAT) in roots of the cucumber seedlings under hypoxic stress”
e1“The results showed that the abundances of SOD and CAT isoenzymes in hypoxia treatment were lower than that of contrast in day 2,and were higher in day 4 and day 6”
Claim · model-written summary
Under hypoxia, SOD and CAT isoenzyme abundance in cucumber seedling roots was higher than in the contrast on days 4 and 6.
- Taxon
- cucumber seedlingsCucumis sativuse0
- Organ / stage
- rootse0
- Treatment
- hypoxia treatmente1
- Outcome
- abundances of SOD and CAT isoenzymese1
- Direction
- highere1
- Qualifier
- in day 4 and day 6e1
- Comparator
- contraste1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A hydroponic experiment was carried out cucumber seedlings to explore the effects of exogenous CaCl2,LaCl3 and TFP on isoenzymes of superoxide dismutase(SOD),peroxidase(POD) and catalase(CAT) in roots of the cucumber seedlings under hypoxic stress”
e1“The results showed that the abundances of SOD and CAT isoenzymes in hypoxia treatment were lower than that of contrast in day 2,and were higher in day 4 and day 6”
Claim · model-written summary
Under hypoxia, POD isoenzyme abundance in cucumber seedling roots was higher than in the contrast during treatment.
- Taxon
- cucumber seedlingsCucumis sativuse0
- Organ / stage
- rootse0
- Treatment
- hypoxia treatmente1
- Outcome
- abundance of POD isozymee2
- Direction
- highere2
- Comparator
- contraste2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A hydroponic experiment was carried out cucumber seedlings to explore the effects of exogenous CaCl2,LaCl3 and TFP on isoenzymes of superoxide dismutase(SOD),peroxidase(POD) and catalase(CAT) in roots of the cucumber seedlings under hypoxic stress”
e1“The results showed that the abundances of SOD and CAT isoenzymes in hypoxia treatment were lower than that of contrast in day 2,and were higher in day 4 and day 6”
e2“The abundance of POD isozyme was higher than that of contrast during treatment”
Claim · model-written summary
Application of 4 mmol·L-1 CaCl2 significantly alleviated the hypoxia stress on the cucumber root system.
- Taxon
- cucumber seedlingsCucumis sativuse0
- Organ / stage
- root systeme3
- Treatment
- Application 4 mmol·L-1 CaCl2e3
- Outcome
- hypoxia stress on the cucumber root systeme3
- Direction
- alleviatede3
- Comparator
- hypoxia stresse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A hydroponic experiment was carried out cucumber seedlings to explore the effects of exogenous CaCl2,LaCl3 and TFP on isoenzymes of superoxide dismutase(SOD),peroxidase(POD) and catalase(CAT) in roots of the cucumber seedlings under hypoxic stress”
e3“Application 4 mmol·L-1 CaCl2 in nutrient solution significantly alleviated the hypoxia stress on the cucumber root system”
Claim · model-written summary
Application of 4 mmol·L-1 CaCl2 significantly improved SOD, POD and CAT isoenzyme activity compared with hypoxic stress.
- Taxon
- cucumber seedlingsCucumis sativuse0
- Treatment
- Application 4 mmol·L-1 CaCl2e3
- Outcome
- activity of SOD,POD and CAT isoenzymese4
- Direction
- improvede4
- Comparator
- hypoxic stress treatmente4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A hydroponic experiment was carried out cucumber seedlings to explore the effects of exogenous CaCl2,LaCl3 and TFP on isoenzymes of superoxide dismutase(SOD),peroxidase(POD) and catalase(CAT) in roots of the cucumber seedlings under hypoxic stress”
e3“Application 4 mmol·L-1 CaCl2 in nutrient solution significantly alleviated the hypoxia stress on the cucumber root system”
e4“The activity of SOD,POD and CAT isoenzymes were significantly improved compared with hypoxic stress treatment”
Claim · model-written summary
Application of 50 μmol·L-1 LaCl3 significantly inhibited SOD, POD and CAT isoenzyme activity in cucumber seedlings under hypoxic stress.
- Taxon
- cucumber seedlingsCucumis sativuse0
- Treatment
- Application 50 μmol·L-1 LaCl3e5
- Outcome
- SOD,POD and CAT isoenzymes activitye5
- Direction
- inhibitede5
- Comparator
- hypoxic stress treatmente5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A hydroponic experiment was carried out cucumber seedlings to explore the effects of exogenous CaCl2,LaCl3 and TFP on isoenzymes of superoxide dismutase(SOD),peroxidase(POD) and catalase(CAT) in roots of the cucumber seedlings under hypoxic stress”
e5“Application 50 μmol·L-1 LaCl3 in nutrient solution,calcium channel inhibitor,significantly inhibited the SOD,POD and CAT isoenzymes activity compared with hypoxic stress treatment”
Claim · model-written summary
Application of 20 μmol·L-1 trifluoperazine caused intense fluctuation of SOD, POD and CAT isoenzymes in cucumber seedlings.
- Taxon
- cucumber seedlingsCucumis sativuse0
- Treatment
- Application 20 μmol·L-1 trifluoperazine(TFP)e6
- Outcome
- SOD,POD and CAT isoenzymese6
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A hydroponic experiment was carried out cucumber seedlings to explore the effects of exogenous CaCl2,LaCl3 and TFP on isoenzymes of superoxide dismutase(SOD),peroxidase(POD) and catalase(CAT) in roots of the cucumber seedlings under hypoxic stress”
e6“Application 20 μmol·L-1 trifluoperazine(TFP) in nutrient solution caused intense fluctuation of SOD,POD and CAT isoenzymes”
Claim · model-written summary
Under trifluoperazine, SOD and CAT isoenzyme abundance in cucumber seedling roots fell rapidly on days 4 and 6.
- Taxon
- cucumber seedlingsCucumis sativuse0
- Treatment
- Application 20 μmol·L-1 trifluoperazine(TFP)e6
- Outcome
- abundances of SOD and CAT isoenzymese7
- Direction
- rapidly downe7
- Qualifier
- in day 4 and day 6e7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A hydroponic experiment was carried out cucumber seedlings to explore the effects of exogenous CaCl2,LaCl3 and TFP on isoenzymes of superoxide dismutase(SOD),peroxidase(POD) and catalase(CAT) in roots of the cucumber seedlings under hypoxic stress”
e6“Application 20 μmol·L-1 trifluoperazine(TFP) in nutrient solution caused intense fluctuation of SOD,POD and CAT isoenzymes”
e7“The abundances of SOD and CAT isoenzymes rapidly in day 2,and were rapidly down in day 4 and day 6 and the abundance of POD isoenzymes rapidly down during treatment”
Claim · model-written summary
Under trifluoperazine, POD isoenzyme abundance in cucumber seedling roots fell rapidly during treatment.
- Taxon
- cucumber seedlingsCucumis sativuse0
- Treatment
- Application 20 μmol·L-1 trifluoperazine(TFP)e6
- Outcome
- abundance of POD isoenzymese7
- Direction
- rapidly downe7
- Qualifier
- during treatmente7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A hydroponic experiment was carried out cucumber seedlings to explore the effects of exogenous CaCl2,LaCl3 and TFP on isoenzymes of superoxide dismutase(SOD),peroxidase(POD) and catalase(CAT) in roots of the cucumber seedlings under hypoxic stress”
e6“Application 20 μmol·L-1 trifluoperazine(TFP) in nutrient solution caused intense fluctuation of SOD,POD and CAT isoenzymes”
e7“The abundances of SOD and CAT isoenzymes rapidly in day 2,and were rapidly down in day 4 and day 6 and the abundance of POD isoenzymes rapidly down during treatment”
Claim · model-written summary
Exogenous Ca2+ enhanced the hypoxia resistance of cucumber plants.
- Taxon
- cucumber plantsCucumis sativuse1
- Treatment
- exogenous Ca2+e1
- Outcome
- the ability of hypoxia-resistante1
- Direction
- enhancede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Thereby,exogenous Ca2+ enhanced the ability of hypoxia-resistant of cucumber plants”
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