Abstract
The aftereffects of copper ions (100 and 300 μM) on the organ size, the content of stress markers (hydro-gen peroxide, lipid peroxidation - LPO) and components of the antioxidant status (superoxide dismutase - SOD and guaiacol peroxidase - GPO) were studied in the roots, stem, and leaves of Nicotiana tabacum L. It was shown that tobacco plants were sensitive to long-term exposure to 100 and 300 μM Cu2+. Both concentrations inhibited root growth, while shoot length and thickness, and leaf area decreased only in the case of pretreatment with 300 μM Cu2+. So, the growth of aboveground organs was suppressed signifi-cantly less than the root. The level of lipid peroxidation and the content of hydrogen peroxide in the roots under these conditions were also higher, which indicates a stronger stress, compared to stem and leaf. The activity of antioxidant enzymes SOD and GPO in roots and aboveground organs specifically changed de-pending on the concentration of copper ions and the type of organ. In the roots, there was a decrease in SOD activity and an increase in the activity of GPO under pretreatment with 300 μM Cu2+, compared to the control and 100 μM Cu2+, while in stem and leaves the activity of enzymes decreased. The data ob-tained indicate incomplete plant recovery under the aftereffect of copper ions.
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Claims 8
Claim · model-written summary
Both copper ion concentrations inhibited root growth in tobacco.
- Taxon
- Nicotiana tabacum
Nicotiana tabacume0 - Treatment
- copper ions (100 and 300 μM)e1
- Outcome
- root growthe2
- Direction
- inhibitede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the roots, stem, and leaves of Nicotiana tabacum L.”
e1“The aftereffects of copper ions (100 and 300 μM)”
e2“Both concentrations inhibited root growth”
Claim · model-written summary
Shoot length and thickness, and leaf area decreased only after pretreatment with 300 μM Cu2+.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Treatment
- pretreatment with 300 μM Cu2+e3
- Outcome
- shoot length and thickness, and leaf areae3
- Direction
- decreasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the roots, stem, and leaves of Nicotiana tabacum L.”
e3“while shoot length and thickness, and leaf area decreased only in the case of pretreatment with 300 μM Cu2+”
Claim · model-written summary
Growth of aboveground organs was suppressed significantly less than root growth by copper ions.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Treatment
- copper ions (100 and 300 μM)e1
- Outcome
- growth of aboveground organse4
- Direction
- suppressede4
- Qualifier
- lesse4
- Comparator
- the roote4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the roots, stem, and leaves of Nicotiana tabacum L.”
e1“The aftereffects of copper ions (100 and 300 μM)”
e4“So, the growth of aboveground organs was suppressed signifi-cantly less than the root”
Claim · model-written summary
Lipid peroxidation and hydrogen peroxide content were higher in roots than in stem and leaf after copper ion treatment.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Organ / stage
- rootse5
- Treatment
- copper ions (100 and 300 μM)e1
- Outcome
- The level of lipid peroxidation and the content of hydrogen peroxidee5
- Direction
- highere5
- Comparator
- stem and leafe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the roots, stem, and leaves of Nicotiana tabacum L.”
e1“The aftereffects of copper ions (100 and 300 μM)”
e5“The level of lipid peroxidation and the content of hydrogen peroxide in the roots under these conditions were also higher, which indicates a stronger stress, compared to stem and leaf”
Claim · model-written summary
SOD activity in roots decreased after pretreatment with 300 μM Cu2+ compared with the control and 100 μM Cu2+.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Organ / stage
- rootse6
- Treatment
- pretreatment with 300 μM Cu2+e6
- Gene
- SODe6
- Outcome
- SOD activitye6
- Direction
- decreasee6
- Comparator
- the control and 100 μM Cu2+e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the roots, stem, and leaves of Nicotiana tabacum L.”
e1“The aftereffects of copper ions (100 and 300 μM)”
e6“In the roots, there was a decrease in SOD activity and an increase in the activity of GPO under pretreatment with 300 μM Cu2+, compared to the control and 100 μM Cu2+”
Claim · model-written summary
GPO activity in roots increased after pretreatment with 300 μM Cu2+ compared with the control and 100 μM Cu2+.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Organ / stage
- rootse6
- Treatment
- pretreatment with 300 μM Cu2+e6
- Gene
- GPOe6
- Outcome
- activity of GPOe6
- Direction
- increasee6
- Comparator
- the control and 100 μM Cu2+e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the roots, stem, and leaves of Nicotiana tabacum L.”
e1“The aftereffects of copper ions (100 and 300 μM)”
e6“In the roots, there was a decrease in SOD activity and an increase in the activity of GPO under pretreatment with 300 μM Cu2+, compared to the control and 100 μM Cu2+”
Claim · model-written summary
Enzyme activity decreased in stem and leaves after copper ion treatment.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Organ / stage
- stem and leavese7
- Treatment
- copper ions (100 and 300 μM)e1
- Outcome
- the activity of enzymese7
- Direction
- decreasede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the roots, stem, and leaves of Nicotiana tabacum L.”
e1“The aftereffects of copper ions (100 and 300 μM)”
e7“while in stem and leaves the activity of enzymes decreased”
Claim · model-written summary
The data indicate incomplete plant recovery after the aftereffect of copper ions.
- Taxon
- Nicotiana tabacumNicotiana tabacume0
- Treatment
- aftereffect of copper ionse7
- Outcome
- incomplete plant recoverye7
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the roots, stem, and leaves of Nicotiana tabacum L.”
e7“The data ob-tained indicate incomplete plant recovery under the aftereffect of copper ions”
The same questions in other papers
copper atom · growth · Nicotiana tabacum (tobacco)Positive and negative results
1 paper in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →copper atom · physiology: oxidative · Nicotiana tabacum (tobacco)Results agree
1 paper in the same direction as this paper
- negative
copper atom · physiology: enzyme activity · Nicotiana tabacum (tobacco)Results agree
1 paper in the same direction as this paper
- 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.