Abstract
A hydroponics experiment was carried out to study the stimulative effect in Lonicera japonica Thunb. induced by cadmium (Cd). The results showed that the plants did not show any visual symptoms at low concentrations of Cd after 2 weeks exposure. Furthermore, roots elongation and contents of photosynthetic pigments displayed a biphasic curve with the increase of added Cd in nutrient medium, indicating plant growth was stimulated at low doses of Cd and inhibited at high doses of Cd. In roots, low-concentration Cd (5 to 25 μmol/L) reduced the content of malondialdehyde (MDA), superoxide anion radical () production decreased to 13.07 and 21.39% compare with the control, respectively. The activities of superoxide dismutase (SOD) and guaiacol peroxidase (POD) was slightly declined at 5 and 25 μmol/L of Cd, respectively and then significantly increased at higher Cd (> 100 μmol/L) treatments in roots. Low Cd led to a slight increase in the activity of catalase (CAT) after 2 week in roots, but lipid peroxidation was not higher than in the control. According to these results, low-concentration Cd (< 100 μmol/L) did not induce oxidative stress and even alleviated the oxidative stress in roots of L. japonica., which might be a mechanism of the stimulative effect in plants. Key words: Cadmium, stimulative effect, oxidative stress, lipid peroxidation and Lonicera japonica Thunb.
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Claims 10
Claim · model-written summary
Plants showed no visible symptoms after two weeks at low Cd concentrations.
- Taxon
- Lonicera japonica Thunb.
Lonicera japonicat0 - Outcome
- did not show any visual symptomse0
- Qualifier
- low concentrations of Cd after 2 weeks exposuree0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the plants did not show any visual symptoms at low concentrations of Cd after 2 weeks exposure.”
t0“Lonicera japonica Thunb.”
Claim · model-written summary
Root elongation and photosynthetic pigment contents were stimulated at low Cd doses and inhibited at high doses.
- Taxon
- Lonicera japonica Thunb.Lonicera japonicat0
- Treatment
- low doses of Cde0
- Outcome
- roots elongation and contents of photosynthetic pigmentse0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“roots elongation and contents of photosynthetic pigments displayed a biphasic curve with the increase of added Cd in nutrient medium, indicating plant growth was stimulated at low doses of Cd and inhibited at high doses of Cd.”
t0“Lonicera japonica Thunb.”
Claim · model-written summary
High Cd doses inhibited plant growth.
- Taxon
- Lonicera japonica Thunb.Lonicera japonicat0
- Treatment
- high doses of Cde0
- Outcome
- plant growthe0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant growth was stimulated at low doses of Cd and inhibited at high doses of Cd.”
t0“Lonicera japonica Thunb.”
Claim · model-written summary
Low Cd reduced root malondialdehyde content.
- Taxon
- Lonicera japonica Thunb.Lonicera japonicat0
- Organ / stage
- rootse0
- Treatment
- low-concentration Cd (5 to 25 μmol/L)e0
- Outcome
- content of malondialdehyde (MDA)e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In roots, low-concentration Cd (5 to 25 μmol/L) reduced the content of malondialdehyde (MDA)”
t0“Lonicera japonica Thunb.”
Claim · model-written summary
Superoxide anion radical production fell by 13.07 and 21.39% relative to control.
- Taxon
- Lonicera japonica Thunb.Lonicera japonicat0
- Outcome
- superoxide anion radical () productione0
- Direction
- decreasede0
- Value
- 13.07 and 21.39%e0
- Comparator
- the controle0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“superoxide anion radical () production decreased to 13.07 and 21.39% compare with the control”
t0“Lonicera japonica Thunb.”
Claim · model-written summary
Root SOD and POD activities declined slightly at 5 and 25 μmol/L Cd, respectively.
- Taxon
- Lonicera japonica Thunb.Lonicera japonicat0
- Treatment
- 5 and 25 μmol/L of Cde0
- Outcome
- activities of superoxide dismutase (SOD) and guaiacol peroxidase (POD)e0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activities of superoxide dismutase (SOD) and guaiacol peroxidase (POD) was slightly declined at 5 and 25 μmol/L of Cd, respectively”
t0“Lonicera japonica Thunb.”
Claim · model-written summary
Higher Cd treatments significantly increased SOD and POD activities.
- Taxon
- Lonicera japonica Thunb.Lonicera japonicat0
- Treatment
- higher Cd (> 100 μmol/L) treatmentse0
- Outcome
- activities of superoxide dismutase (SOD) and guaiacol peroxidase (POD)e1
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significantly increased at higher Cd (> 100 μmol/L) treatments in roots.”
e1“The activities of superoxide dismutase (SOD) and guaiacol peroxidase (POD) was slightly declined at 5 and 25 μmol/L of Cd, respectively and then significantly increased at higher Cd (> 100 μmol/L) treatments in roots.”
t0“Lonicera japonica Thunb.”
Claim · model-written summary
Low Cd slightly increased root CAT activity after two weeks.
- Taxon
- Lonicera japonica Thunb.Lonicera japonicat0
- Treatment
- Low Cde0
- Outcome
- activity of catalase (CAT)e0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low Cd led to a slight increase in the activity of catalase (CAT) after 2 week in roots”
t0“Lonicera japonica Thunb.”
Claim · model-written summary
Root lipid peroxidation was no higher than control under low Cd.
- Taxon
- Lonicera japonica Thunb.Lonicera japonicat0
- Treatment
- Low Cde0
- Outcome
- lipid peroxidatione0
- Direction
- not highere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low Cd led to a slight increase in the activity of catalase (CAT) after 2 week in roots, but lipid peroxidation was not higher than in the control.”
t0“Lonicera japonica Thunb.”
Claim · model-written summary
Authors interpret low Cd as not inducing, and possibly alleviating, root oxidative stress.
- Taxon
- L. japonica.Lonicera japonicae0
- Treatment
- low-concentration Cd (< 100 μmol/L)e0
- Outcome
- oxidative stress in rootse0
- Qualifier
- might be a mechanism of the stimulative effecte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low-concentration Cd (< 100 μmol/L) did not induce oxidative stress and even alleviated the oxidative stress in roots of L. japonica., which might be a mechanism of the stimulative effect in plants.”
The same questions in other papers
cadmium atom · growth · Lonicera japonica (Japanese honeysuckle)Results differ
4 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- positive
- positive
4 papers more in this group
See all 8 papers →cadmium atom · physiology: oxidative · Lonicera japonica (Japanese honeysuckle)Positive and negative results
2 in the opposite direction
- negative
- negative
cadmium atom · physiology: photosynthesis · Lonicera japonica (Japanese honeysuckle)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →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.