Abstract
Abstract The present study evaluated the effects of exogenous hemin on cadmium toxicity in terms of metal accretion and stress resilience in Vigna radiata L. (Wilczek). One-week-old seedlings were treated with CdCl 2 (50 μM) alone and in combination with hemin (0.5 mM) in half-strength Hoagland medium for 96 h. The optimum concentrations of Cd and hemin were determined on the basis of haem oxygenase-1 activity. The results demonstrated that under Cd stress, plants accumulated a considerable amount of metal in their tissues, and the accumulation was higher in roots than in leaves, which significantly reduced the plant biomass and chlorophyll content by increasing the oxidative stress (MDA and H 2 O 2 content). However, hemin supplementation under Cd,-stress improved plant growth by enhancing the harvestable biomass and photosynthetic pigments, increasing antioxidant activities (SOD, APX, POD, HO-1 and proline), lowering oxidative damage and increasing Cd tolerance in plants. Furthermore, the application of hemin enhances the removal efficiency of Cd in V. radiata by increasing the uptake of Cd via roots and its translocation from roots to foliar tissues. Thus, the study suggests that hemin has the potential to improve the stress tolerance and phytoremediation ability of heavy metal-tolerant plants so that they can be used instead of hyperaccumulators for remediation of Cd-contaminated environments.
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Claims 9
Claim · model-written summary
Under cadmium stress, Vigna radiata accumulated more cadmium in roots than leaves.
- Taxon
- Vigna radiata
.jpg?width=60)
Vigna radiatat0 - Organ / stage
- rootse0
- Outcome
- accumulatione0
- Direction
- highere0
- Comparator
- leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“under Cd stress, plants accumulated a considerable amount of metal in their tissues, and the accumulation was higher in roots than in leaves”
t0“Vigna radiata”
Claim · model-written summary
Cadmium stress reduced Vigna radiata biomass and chlorophyll content.
- Taxon
- Vigna radiataVigna radiatat0
- Treatment
- Cd stresse0
- Outcome
- plant biomass and chlorophyll contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under Cd stress, plants accumulated a considerable amount of metal in their tissues, and the accumulation was higher in roots than in leaves, which significantly reduced the plant biomass and chlorophyll content by increasing the oxidative stress (MDA and H 2 O 2 content)”
t0“Vigna radiata”
Claim · model-written summary
Cadmium stress increased oxidative stress in Vigna radiata.
- Taxon
- Vigna radiataVigna radiatat0
- Treatment
- Cd stresse0
- Outcome
- oxidative stress (MDA and H 2 O 2 content)e0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under Cd stress, plants accumulated a considerable amount of metal in their tissues, and the accumulation was higher in roots than in leaves, which significantly reduced the plant biomass and chlorophyll content by increasing the oxidative stress (MDA and H 2 O 2 content)”
t0“Vigna radiata”
Claim · model-written summary
Hemin supplementation under cadmium stress increased biomass and photosynthetic pigments.
- Taxon
- Vigna radiataVigna radiatat0
- Treatment
- hemin supplementation under Cd,-stresse0
- Outcome
- harvestable biomass and photosynthetic pigmentse0
- Direction
- enhancinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hemin supplementation under Cd,-stress improved plant growth by enhancing the harvestable biomass and photosynthetic pigments”
t0“Vigna radiata”
Claim · model-written summary
Hemin supplementation under cadmium stress increased antioxidant activities and proline.
- Taxon
- Vigna radiataVigna radiatat0
- Treatment
- hemin supplementation under Cd,-stresse0
- Outcome
- antioxidant activities (SOD, APX, POD, HO-1 and proline)e0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hemin supplementation under Cd,-stress improved plant growth by enhancing the harvestable biomass and photosynthetic pigments, increasing antioxidant activities (SOD, APX, POD, HO-1 and proline)”
t0“Vigna radiata”
Claim · model-written summary
Hemin supplementation under cadmium stress lowered oxidative damage and increased cadmium tolerance.
- Taxon
- Vigna radiataVigna radiatat0
- Treatment
- hemin supplementation under Cd,-stresse0
- Outcome
- oxidative damagee0
- Direction
- loweringe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hemin supplementation under Cd,-stress improved plant growth by enhancing the harvestable biomass and photosynthetic pigments, increasing antioxidant activities (SOD, APX, POD, HO-1 and proline), lowering oxidative damage and increasing Cd tolerance in plants”
t0“Vigna radiata”
Claim · model-written summary
Hemin increased cadmium removal efficiency in Vigna radiata.
- Taxon
- V. radiataVigna radiatae0
- Treatment
- application of hemine0
- Outcome
- removal efficiency of Cde0
- Direction
- enhancese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of hemin enhances the removal efficiency of Cd in V. radiata by increasing the uptake of Cd via roots and its translocation from roots to foliar tissues”
Claim · model-written summary
Hemin increased cadmium uptake by roots and movement into leaves.
- Taxon
- V. radiataVigna radiatae0
- Treatment
- application of hemine0
- Outcome
- uptake of Cd via roots and its translocation from roots to foliar tissuese0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of hemin enhances the removal efficiency of Cd in V. radiata by increasing the uptake of Cd via roots and its translocation from roots to foliar tissues”
Claim · model-written summary
The authors suggest hemin to improve heavy metal tolerance and phytoremediation.
Verbatim
e0“the study suggests that hemin has the potential to improve the stress tolerance and phytoremediation ability of heavy metal-tolerant plants”
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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.