Abstract
The carbon sequestration and oxygen release of landscape plants are dominant ecological service functions, which can play an important role in reducing greenhouse gases, improving the urban heat island effect and achieving carbon peaking and carbon neutrality. In the present study, we are choosing Lonicera japonica Thunb. as a model plant to show the effects of Cd stress on growth, photosynthesis, carbon sequestration and oxygen release characteristics. Under 5 mg kg−1 of Cd treatment, the dry weight of roots and shoots biomass and the net photosynthetic rate (PN) in L. japonica had a significant increase, and with the increase in Cd treatment concentration, the dry weight of roots and shoots biomass and PN in the plant began to decrease. When the Cd treatment concentration was up to 125 mg kg−1, the dry weight of root and shoots biomass and PN in the plant decreased by 5.29%, 1.94% and 2.06%, and they had no significant decrease compared with the control, indicating that the plant still had a good ability for growth and photoenergy utilization even under high concentrations of Cd stress. The carbon sequestration and oxygen release functions in terms of diurnal assimilation amounts (P), carbon sequestration per unit leaf area (WCO2), oxygen release per unit leaf area (WO2), carbon sequestration per unit land area (PCO2) and oxygen release per unit land area (PO2) in L. japonica had a similar change trend with the photosynthesis responses under different concentrations of Cd treatments, which indicated that L. japonica as a landscaping Cd-hyperaccumulator, has a good ability for carbon sequestration and oxygen release even under high concentrations of Cd stress. The present study will provide a useful guideline for effectively developing the ecological service functions of landscaping hyperaccumulators under urban Cd-contaminated environment.
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Claims 8
Claim · model-written summary
Under 5 mg/kg Cd, dry weight of roots and shoots biomass and net photosynthetic rate of L. japonica significantly increased.
- Taxon
- Lonicera japonica Thunb.
Lonicera japonicat0 - Treatment
- 5 mg kg−1 of Cd treatmente1
- Outcome
- dry weight of roots and shoots biomass and the net photosynthetic rate (PN)e1
- Direction
- significant increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Under 5 mg kg−1 of Cd treatment, the dry weight of roots and shoots biomass and the net photosynthetic rate (PN) in L. japonica had a significant increase”
t0“Lonicera japonica Thunb.”
Claim · model-written summary
As Cd treatment concentration increased, root and shoot biomass and PN began to decrease in L. japonica.
- Taxon
- Lonicera japonica Thunb.Lonicera japonicat0
- Treatment
- increase in Cd treatment concentratione2
- Outcome
- dry weight of roots and shoots biomass and PNe2
- Direction
- began to decreasee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“with the increase in Cd treatment concentration, the dry weight of roots and shoots biomass and PN in the plant began to decrease”
t0“Lonicera japonica Thunb.”
Claim · model-written summary
At 125 mg/kg Cd, root dry weight decreased by 5.29% with no significant decrease compared with control.
- Taxon
- Lonicera japonica Thunb.Lonicera japonicat0
- Treatment
- 125 mg kg−1e3
- Outcome
- dry weight of roote3
- Direction
- decreasede3
- Value
- 5.29%e3
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“When the Cd treatment concentration was up to 125 mg kg−1, the dry weight of root and shoots biomass and PN in the plant decreased by 5.29%, 1.94% and 2.06%, and they had no significant decrease compared with the control”
t0“Lonicera japonica Thunb.”
Claim · model-written summary
At 125 mg/kg Cd, shoot biomass decreased by 1.94% with no significant decrease compared with control.
- Taxon
- Lonicera japonica Thunb.Lonicera japonicat0
- Treatment
- 125 mg kg−1e3
- Outcome
- shoots biomasse3
- Direction
- decreasede3
- Value
- 1.94%e3
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“When the Cd treatment concentration was up to 125 mg kg−1, the dry weight of root and shoots biomass and PN in the plant decreased by 5.29%, 1.94% and 2.06%, and they had no significant decrease compared with the control”
t0“Lonicera japonica Thunb.”
Claim · model-written summary
At 125 mg/kg Cd, PN decreased by 2.06% with no significant decrease compared with control.
- Taxon
- Lonicera japonica Thunb.Lonicera japonicat0
- Treatment
- 125 mg kg−1e3
- Outcome
- PNe3
- Direction
- decreasede3
- Value
- 2.06%e3
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“When the Cd treatment concentration was up to 125 mg kg−1, the dry weight of root and shoots biomass and PN in the plant decreased by 5.29%, 1.94% and 2.06%, and they had no significant decrease compared with the control”
t0“Lonicera japonica Thunb.”
Claim · model-written summary
L. japonica retained good ability for growth and photoenergy utilization even under high Cd concentrations.
- Taxon
- Lonicera japonica Thunb.Lonicera japonicat0
- Treatment
- high concentrations of Cd stresse4
- Outcome
- ability for growth and photoenergy utilizatione4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“indicating that the plant still had a good ability for growth and photoenergy utilization even under high concentrations of Cd stress”
t0“Lonicera japonica Thunb.”
Claim · model-written summary
Carbon sequestration and oxygen release functions of L. japonica changed in a similar trend to photosynthesis under different Cd concentrations.
- Taxon
- L. japonicaLonicera japonicae5
- Treatment
- different concentrations of Cd treatmentse5
- Outcome
- carbon sequestration and oxygen release functionse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“The carbon sequestration and oxygen release functions in terms of diurnal assimilation amounts (P), carbon sequestration per unit leaf area (WCO2), oxygen release per unit leaf area (WO2), carbon sequestration per unit land area (PCO2) and oxygen release per unit land area (PO2) in L. japonica had a similar change trend with the photosynthesis responses under different concentrations of Cd treatments”
Claim · model-written summary
The findings give a guideline for developing ecological service functions of landscaping hyperaccumulators in Cd-contaminated urban environments.
Verbatim
e6“The present study will provide a useful guideline for effectively developing the ecological service functions of landscaping hyperaccumulators under urban Cd-contaminated environment”
The same questions in other papers
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.