Abstract
The soil cultivation experiment was used to investigate the accumulation and distribution of cobalt in broad bean(Vicia faba L.)and the effects of cobalt on the photosynthetic characteristics and antioxidant properties of broad bean leaves.Broad bean seedlings at the six-leaf stage were treated with different concentration cobalt(0,20,40,80,120mg·kg-1),and the cobalt content in roots,stems and leaves,photosynthetic pigment content,photosynthetic gas exchange parameters,chlorophyll fluorescence parameters of leaves,growth indexes,POD,CAT and SOD activities of leaves were investigated on the 14 th day after the cobalt treatment.The results showed that:(1)the roots,stems and leaves of broad bean could absorb andaccumulate a certain amount of cobalt,and there was a significant positive correlation between the cobalt content of broad bean and soil cobalt content.There were obviously differences in cobalt content between the different organs,and the order of cobalt content from high to low was roots,leaves and stems.(2)Chlorophyll a content(Chl a),chlorophyll b content(Chl b),stomatal conductance(Gs),the maximal photochemical efficiency of PSⅡ(Fv/Fm)and the potential activity of PSⅡ(Fv/F0)took on the promoting effects on 0-40mg·kg-1 and the inhibitory effects on 40-120mg·kg-1;Net photosynthetic rate(Pn),intercellular CO2concentration(Ci),the minimum fluorescence of PSⅡ(F0),the maximum fluorescence of PSⅡ(Fm)took on the promoting effects on 0-80mg·kg-1 and the inhibitory effects on 80-120mg·kg-1;Transpiration rate(Tr),carotenoid content(Car)took on the promoting effects on 0-120mg·kg-1,and all photosynthetic parameters in promoting maximum 40mg·kg-1.(3)Root length,plant height,biomass,POD,CAT and SOD activities showed a obvious rise under low concentrations of cobalt,and a decline under high concentrations of cobalt.These results showed low concentrations of cobalt could improve the photosynthesis and growth,while high concentrations of cobalt significantly inhibited the photosynthetic efficiency,growth and development of plants.
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Claims 17
Claim · model-written summary
Roots, stems and leaves of broad bean absorbed and accumulated cobalt.
- Taxon
- Broad bean
Vicia fabae0 - Organ / stage
- roots,stems and leavese1
- Outcome
- absorb andaccumulate a certain amount of cobalte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broad bean seedlings at the six-leaf stage were treated with different concentration cobalt(0,20,40,80,120mg·kg-1)”
e1“the roots,stems and leaves of broad bean could absorb andaccumulate a certain amount of cobalt”
Claim · model-written summary
Cobalt content of broad bean was significantly positively correlated with soil cobalt content.
- Taxon
- Broad beanVicia fabae0
- Compound
- cobalte2
- Outcome
- the cobalt content of broad beane2
- Direction
- increaseinferrede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broad bean seedlings at the six-leaf stage were treated with different concentration cobalt(0,20,40,80,120mg·kg-1)”
e2“there was a significant positive correlation between the cobalt content of broad bean and soil cobalt content”
Claim · model-written summary
Cobalt content in broad bean organs was highest in roots, followed by leaves and then stems.
- Taxon
- Broad beanVicia fabae0
- Organ / stage
- roots,leaves and stemse3
- Outcome
- order of cobalt content from high to lowe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broad bean seedlings at the six-leaf stage were treated with different concentration cobalt(0,20,40,80,120mg·kg-1)”
e3“the order of cobalt content from high to low was roots,leaves and stems”
Claim · model-written summary
Chlorophyll a content, chlorophyll b content and stomatal conductance were promoted by cobalt at 0-40 mg·kg-1.
- Taxon
- Broad beanVicia fabae0
- Treatment
- different concentration cobalte0
- Outcome
- Chlorophyll a content(Chl a),chlorophyll b content(Chl b),stomatal conductance(Gs)e4
- Direction
- promoting effectse4
- Qualifier
- 0-40mg·kg-1e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broad bean seedlings at the six-leaf stage were treated with different concentration cobalt(0,20,40,80,120mg·kg-1)”
e4“Chlorophyll a content(Chl a),chlorophyll b content(Chl b),stomatal conductance(Gs),the maximal photochemical efficiency of PSⅡ(Fv/Fm)and the potential activity of PSⅡ(Fv/F0)took on the promoting effects on 0-40mg·kg-1”
Claim · model-written summary
Chlorophyll a content, chlorophyll b content and stomatal conductance were inhibited by cobalt at 40-120 mg·kg-1.
- Taxon
- Broad beanVicia fabae0
- Treatment
- different concentration cobalte0
- Outcome
- Chlorophyll a content(Chl a),chlorophyll b content(Chl b),stomatal conductance(Gs)e5
- Direction
- inhibitory effectse5
- Qualifier
- 40-120mg·kg-1e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broad bean seedlings at the six-leaf stage were treated with different concentration cobalt(0,20,40,80,120mg·kg-1)”
e5“Chlorophyll a content(Chl a),chlorophyll b content(Chl b),stomatal conductance(Gs),the maximal photochemical efficiency of PSⅡ(Fv/Fm)and the potential activity of PSⅡ(Fv/F0)took on the promoting effects on 0-40mg·kg-1 and the inhibitory effects on 40-120mg·kg-1”
Claim · model-written summary
The maximal and potential photochemical efficiency of PSII (Fv/Fm and Fv/F0) were promoted by cobalt at 0-40 mg·kg-1.
- Taxon
- Broad beanVicia fabae0
- Treatment
- different concentration cobalte0
- Outcome
- the maximal photochemical efficiency of PSⅡ(Fv/Fm)and the potential activity of PSⅡ(Fv/F0)e4
- Direction
- promoting effectse4
- Qualifier
- 0-40mg·kg-1e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broad bean seedlings at the six-leaf stage were treated with different concentration cobalt(0,20,40,80,120mg·kg-1)”
e4“Chlorophyll a content(Chl a),chlorophyll b content(Chl b),stomatal conductance(Gs),the maximal photochemical efficiency of PSⅡ(Fv/Fm)and the potential activity of PSⅡ(Fv/F0)took on the promoting effects on 0-40mg·kg-1”
Claim · model-written summary
The maximal and potential photochemical efficiency of PSII (Fv/Fm and Fv/F0) were inhibited by cobalt at 40-120 mg·kg-1.
- Taxon
- Broad beanVicia fabae0
- Treatment
- different concentration cobalte0
- Outcome
- the maximal photochemical efficiency of PSⅡ(Fv/Fm)and the potential activity of PSⅡ(Fv/F0)e5
- Direction
- inhibitory effectse5
- Qualifier
- 40-120mg·kg-1e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broad bean seedlings at the six-leaf stage were treated with different concentration cobalt(0,20,40,80,120mg·kg-1)”
e5“Chlorophyll a content(Chl a),chlorophyll b content(Chl b),stomatal conductance(Gs),the maximal photochemical efficiency of PSⅡ(Fv/Fm)and the potential activity of PSⅡ(Fv/F0)took on the promoting effects on 0-40mg·kg-1 and the inhibitory effects on 40-120mg·kg-1”
Claim · model-written summary
Net photosynthetic rate and intercellular CO2 concentration were promoted by cobalt at 0-80 mg·kg-1.
- Taxon
- Broad beanVicia fabae0
- Treatment
- different concentration cobalte0
- Outcome
- Net photosynthetic rate(Pn),intercellular CO2concentration(Ci)e6
- Direction
- promoting effectse6
- Qualifier
- 0-80mg·kg-1e6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broad bean seedlings at the six-leaf stage were treated with different concentration cobalt(0,20,40,80,120mg·kg-1)”
e6“Net photosynthetic rate(Pn),intercellular CO2concentration(Ci),the minimum fluorescence of PSⅡ(F0),the maximum fluorescence of PSⅡ(Fm)took on the promoting effects on 0-80mg·kg-1”
Claim · model-written summary
Net photosynthetic rate and intercellular CO2 concentration were inhibited by cobalt at 80-120 mg·kg-1.
- Taxon
- Broad beanVicia fabae0
- Treatment
- different concentration cobalte0
- Outcome
- Net photosynthetic rate(Pn),intercellular CO2concentration(Ci)e7
- Direction
- inhibitory effectse7
- Qualifier
- 80-120mg·kg-1e7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broad bean seedlings at the six-leaf stage were treated with different concentration cobalt(0,20,40,80,120mg·kg-1)”
e7“Net photosynthetic rate(Pn),intercellular CO2concentration(Ci),the minimum fluorescence of PSⅡ(F0),the maximum fluorescence of PSⅡ(Fm)took on the promoting effects on 0-80mg·kg-1 and the inhibitory effects on 80-120mg·kg-1”
Claim · model-written summary
Minimum and maximum fluorescence of PSII (F0 and Fm) were promoted by cobalt at 0-80 mg·kg-1.
- Taxon
- Broad beanVicia fabae0
- Treatment
- different concentration cobalte0
- Outcome
- the minimum fluorescence of PSⅡ(F0),the maximum fluorescence of PSⅡ(Fm)e6
- Direction
- promoting effectse6
- Qualifier
- 0-80mg·kg-1e6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broad bean seedlings at the six-leaf stage were treated with different concentration cobalt(0,20,40,80,120mg·kg-1)”
e6“Net photosynthetic rate(Pn),intercellular CO2concentration(Ci),the minimum fluorescence of PSⅡ(F0),the maximum fluorescence of PSⅡ(Fm)took on the promoting effects on 0-80mg·kg-1”
Claim · model-written summary
Minimum and maximum fluorescence of PSII (F0 and Fm) were inhibited by cobalt at 80-120 mg·kg-1.
- Taxon
- Broad beanVicia fabae0
- Treatment
- different concentration cobalte0
- Outcome
- the minimum fluorescence of PSⅡ(F0),the maximum fluorescence of PSⅡ(Fm)e7
- Direction
- inhibitory effectse7
- Qualifier
- 80-120mg·kg-1e7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broad bean seedlings at the six-leaf stage were treated with different concentration cobalt(0,20,40,80,120mg·kg-1)”
e7“Net photosynthetic rate(Pn),intercellular CO2concentration(Ci),the minimum fluorescence of PSⅡ(F0),the maximum fluorescence of PSⅡ(Fm)took on the promoting effects on 0-80mg·kg-1 and the inhibitory effects on 80-120mg·kg-1”
Claim · model-written summary
Transpiration rate and carotenoid content were promoted by cobalt at 0-120 mg·kg-1.
- Taxon
- Broad beanVicia fabae0
- Treatment
- different concentration cobalte0
- Outcome
- Transpiration rate(Tr),carotenoid content(Car)e1
- Direction
- promoting effectse1
- Qualifier
- 0-120mg·kg-1e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broad bean seedlings at the six-leaf stage were treated with different concentration cobalt(0,20,40,80,120mg·kg-1)”
e1“Transpiration rate(Tr),carotenoid content(Car)took on the promoting effects on 0-120mg·kg-1”
Claim · model-written summary
All photosynthetic parameters were promoted most at 40 mg·kg-1 cobalt.
- Taxon
- Broad beanVicia fabae0
- Treatment
- different concentration cobalte0
- Outcome
- all photosynthetic parameterse1
- Direction
- promoting maximume1
- Qualifier
- 40mg·kg-1e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broad bean seedlings at the six-leaf stage were treated with different concentration cobalt(0,20,40,80,120mg·kg-1)”
e1“and all photosynthetic parameters in promoting maximum 40mg·kg-1”
Claim · model-written summary
Root length, plant height and biomass rose under low cobalt concentrations.
- Taxon
- Broad beanVicia fabae0
- Treatment
- low concentrations of cobalte1
- Outcome
- Root length,plant height,biomasse1
- Direction
- risee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broad bean seedlings at the six-leaf stage were treated with different concentration cobalt(0,20,40,80,120mg·kg-1)”
e1“Root length,plant height,biomass,POD,CAT and SOD activities showed a obvious rise under low concentrations of cobalt,and a decline under high concentrations of cobalt”
Claim · model-written summary
Root length, plant height and biomass declined under high cobalt concentrations.
- Taxon
- Broad beanVicia fabae0
- Treatment
- high concentrations of cobalte1
- Outcome
- Root length,plant height,biomasse1
- Direction
- declinee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broad bean seedlings at the six-leaf stage were treated with different concentration cobalt(0,20,40,80,120mg·kg-1)”
e1“Root length,plant height,biomass,POD,CAT and SOD activities showed a obvious rise under low concentrations of cobalt,and a decline under high concentrations of cobalt”
Claim · model-written summary
POD, CAT and SOD activities rose under low cobalt concentrations.
- Taxon
- Broad beanVicia fabae0
- Treatment
- low concentrations of cobalte1
- Outcome
- POD,CAT and SOD activitiese1
- Direction
- risee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broad bean seedlings at the six-leaf stage were treated with different concentration cobalt(0,20,40,80,120mg·kg-1)”
e1“Root length,plant height,biomass,POD,CAT and SOD activities showed a obvious rise under low concentrations of cobalt,and a decline under high concentrations of cobalt”
Claim · model-written summary
POD, CAT and SOD activities declined under high cobalt concentrations.
- Taxon
- Broad beanVicia fabae0
- Treatment
- high concentrations of cobalte1
- Outcome
- POD,CAT and SOD activitiese1
- Direction
- declinee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broad bean seedlings at the six-leaf stage were treated with different concentration cobalt(0,20,40,80,120mg·kg-1)”
e1“Root length,plant height,biomass,POD,CAT and SOD activities showed a obvious rise under low concentrations of cobalt,and a decline under high concentrations of cobalt”
The same questions in other papers
cobalt atom · growth · Vicia faba (faba bean)Results differ
3 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
1 paper more in this group
See all 5 papers →cobalt atom · molecular: metabolites · Vicia faba (faba bean)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
cobalt atom · physiology: antioxidant enzymes · Vicia faba (faba bean)Results agree
1 paper in the same direction as this paper
- positive
cobalt atom · physiology: photosynthesis · Vicia faba (faba bean)Results agree
1 paper in the same direction as this paper
- positive
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.