Abstract
Cadmium (Cd) pollutant poses severe risks to ecosystems. Identifying suitable plant species with large biomass, economic value, and stable Cd tolerance and accumulation is urgently needed for Cd removal. Here, Artemisia argyi cultivar ‘Xiang Ai’ (XA) exhibited remarkable Cd tolerance together with sustained and stable Cd-accumulation capacity throughout its entire growth period. Normal growth was maintained even under 100 mg/kg Cd exposure, and a stable Cd-enrichment level of 7045.74 μg per plant was recorded. Cd was predominantly accumulated in the aboveground organs, particularly in the lower leaves. Physiological, biochemical, and multi-omics analyses revealed that its Cd tolerance was mainly achieved through a coordinated antioxidant defense system, in which enhanced SOD-mediated enzymatic activity acted synergistically with hispidulin-enriched non-enzymatic protection driven by the upregulation of flavonoid biosynthesis genes. Moreover, hispidulin was further suggested to potentiate SOD activity, thereby reinforcing the enzymatic detoxification of ROS. Additionally, hispidulin was implicated as a putative signaling molecule capable of recruiting Cd-tolerant rhizosphere microorganisms (e.g., norank_o_Chloroplast), which further strengthened Cd resistance in XA. Collectively, this study provides new insights into the Cd tolerance mechanisms of A. argyi , and establishes a theoretical basis for ecological restoration of Cd-contaminated soils and the safe utilization of hyperaccumulative medicinal plant resources.
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Claims 7
Claim · model-written summary
Artemisia argyi cultivar Xiang Ai showed remarkable Cd tolerance together with sustained and stable Cd accumulation throughout its growth period.
- Taxon
- Artemisia argyi
Artemisia argyie0 - Material
- Xiang Aie0
- Outcome
- Cd tolerance together with sustained and stable Cd-accumulation capacitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Artemisia argyi cultivar ‘Xiang Ai’ (XA) exhibited remarkable Cd tolerance together with sustained and stable Cd-accumulation capacity throughout its entire growth period”
Claim · model-written summary
Normal growth was maintained under 100 mg/kg Cd exposure.
- Taxon
- Artemisia argyiArtemisia argyit0
- Treatment
- 100 mg/kg Cd exposuree0
- Outcome
- Normal growthe0
- Direction
- maintainede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Artemisia argyi”
e0“Normal growth was maintained even under 100 mg/kg Cd exposure”
Claim · model-written summary
A stable Cd-enrichment level of 7045.74 ug per plant was recorded.
- Taxon
- Artemisia argyiArtemisia argyit0
- Outcome
- Cd-enrichment levele0
- Value
- 7045.74 μg per plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Artemisia argyi”
e0“a stable Cd-enrichment level of 7045.74 μg per plant was recorded”
Claim · model-written summary
Cd accumulated predominantly in the aboveground organs, particularly the lower leaves.
- Taxon
- Artemisia argyiArtemisia argyit0
- Organ / stage
- aboveground organse0
- Outcome
- Cd was predominantly accumulatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Artemisia argyi”
e0“Cd was predominantly accumulated in the aboveground organs, particularly in the lower leaves”
Claim · model-written summary
Cd tolerance was mainly achieved through a coordinated antioxidant defense system combining enhanced SOD activity with hispidulin-enriched non-enzymatic protection driven by upregulated flavonoid biosynthesis genes.
- Taxon
- Artemisia argyiArtemisia argyit0
- Gene
- flavonoid biosynthesis genese0
- Compound
- hispiduline0
- Outcome
- Cd tolerancee0
- Qualifier
- coordinated antioxidant defense systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Artemisia argyi”
e0“its Cd tolerance was mainly achieved through a coordinated antioxidant defense system, in which enhanced SOD-mediated enzymatic activity acted synergistically with hispidulin-enriched non-enzymatic protection driven by the upregulation of flavonoid biosynthesis genes”
Claim · model-written summary
Hispidulin was suggested to potentiate SOD activity and thereby reinforce enzymatic detoxification of ROS.
- Taxon
- Artemisia argyiArtemisia argyit0
- Gene
- SODe0
- Compound
- hispiduline0
- Outcome
- enzymatic detoxification of ROSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Artemisia argyi”
e0“hispidulin was further suggested to potentiate SOD activity, thereby reinforcing the enzymatic detoxification of ROS”
Claim · model-written summary
Hispidulin was implicated as a putative signaling molecule recruiting Cd-tolerant rhizosphere microorganisms, which further strengthened Cd resistance.
- Taxon
- Artemisia argyiArtemisia argyit0
- Interactor
- Cd-tolerant rhizosphere microorganismse0other
- Compound
- hispiduline0
- Outcome
- Cd resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Artemisia argyi”
e0“hispidulin was implicated as a putative signaling molecule capable of recruiting Cd-tolerant rhizosphere microorganisms (e.g., norank_o_Chloroplast), which further strengthened Cd resistance in XA”
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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.