Abstract
Although zinc-fulvic acid chelate (Zn-FA) can efficiently reduce the cadmium (Cd) accumulation in rice grains, little is known about the impacts on other beneficial elements (such as zinc) levels in rice, along with the optimal concentration and underlying molecular mechanisms. The aim of this study is to investigate the effect of Zn-FA on Cd accumulation in rice and its metabolic mechanism through pot experiments. The results demonstrated that Zn-FA treatments significantly reduced Cd and increased Zn content in rice grains, with 10 g/L Zn-FA identified as the optimal concentration for spraying. Zn-FA treatment primarily reduced the translocation of Cd from stems to grains, thereby limiting Cd accumulation in the grain. Metabolomic analysis revealed that Zn-FA application significantly altered the metabolic profiles of rice leaves under Cd stress. In Yixiangyou586 (YXY586), Zn-FA involved the upregulation of flavonoids with antioxidant properties, along with associated pathways such as flavonoid biosynthesis, flavone, and flavonol biosynthesis; similarly, in Gengxiangyou703 (GXY703), Zn-FA modulated the metabolism of flavonoids. Under Zn-FA application, the reduction of Cd content and increase of Zn accumulation in rice grains are mainly related to the altered metabolism of phenolics, especially flavonoids in rice leaves. The findings of this study offer new insights into the mechanism of Zn-FA in reducing Cd content in rice, thereby providing a scientific foundation and technical support for ensuring safe crop production and promoting ecological safety.
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Claims 8
Claim · model-written summary
Zn-FA significantly reduced rice grain Cd.
- Taxon
- rice
Oryza sativae0 - Treatment
- Zn-FA treatmentse0
- Outcome
- Cde0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zn-FA treatments significantly reduced Cd and increased Zn content in rice grains”
Claim · model-written summary
Zn-FA significantly increased rice grain Zn.
- Taxon
- riceOryza sativae0
- Treatment
- Zn-FA treatmentse0
- Outcome
- Zn content in rice grainse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zn-FA treatments significantly reduced Cd and increased Zn content in rice grains”
Claim · model-written summary
The optimal spray concentration was 10 g/L Zn-FA.
- Taxon
- riceOryza sativat0
- Outcome
- optimal concentration for sprayinge0
- Value
- 10 g/Le0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“10 g/L Zn-FA identified as the optimal concentration for spraying”
t0“Rice”
Claim · model-written summary
Zn-FA reduced Cd movement from stems to grains.
- Taxon
- riceOryza sativat0
- Treatment
- Zn-FA treatmente0
- Outcome
- translocation of Cd from stems to grainse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zn-FA treatment primarily reduced the translocation of Cd from stems to grains”
t0“Rice”
Claim · model-written summary
Zn-FA significantly changed leaf metabolic profiles under Cd stress.
- Taxon
- riceOryza sativae0
- Treatment
- Zn-FA applicatione0
- Outcome
- metabolic profiles of rice leavese0
- Qualifier
- under Cd stresse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zn-FA application significantly altered the metabolic profiles of rice leaves under Cd stress”
Claim · model-written summary
Zn-FA upregulated antioxidant flavonoids in Yixiangyou586.
- Taxon
- riceOryza sativat0
- Material
- Yixiangyou586e0
- Treatment
- Zn-FAe0
- Outcome
- flavonoids with antioxidant propertiese0
- Direction
- upregulatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In Yixiangyou586 (YXY586), Zn-FA involved the upregulation of flavonoids with antioxidant properties”
t0“Rice”
Claim · model-written summary
Zn-FA modulated flavonoid metabolism in Gengxiangyou703.
- Taxon
- riceOryza sativat0
- Material
- Gengxiangyou703e0
- Treatment
- Zn-FAe0
- Outcome
- metabolism of flavonoidse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in Gengxiangyou703 (GXY703), Zn-FA modulated the metabolism of flavonoids”
t0“Rice”
Claim · model-written summary
The authors related grain Cd reduction and Zn increase to altered leaf phenolic metabolism.
- Taxon
- riceOryza sativae0
- Outcome
- reduction of Cd content and increase of Zn accumulation in rice grainse0
- Qualifier
- altered metabolism of phenolics, especially flavonoids in rice leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduction of Cd content and increase of Zn accumulation in rice grains are mainly related to the altered metabolism of phenolics, especially flavonoids in rice leaves”
The same questions in other papers
zinc atom · nutrient: content · Oryza sativa (rice)Results differ
253 papers in the same direction as this paper · 21 in the opposite direction · 1 reporting no difference from an alternative
- positive
- negative
- no effect
272 papers more in this group
See all 276 papers →zinc atom · quality: phytochemicals · Oryza sativa (rice)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
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.