Abstract
Rapid industrialization and urbanization have resulted in the contamination of natural resources, particularly water bodies and agricultural soils. This pollution has severely disrupted ecological balance and agricultural productivity, posing a serious threat to global food security. Among the various pollutants, heavy metals such as cadmium (Cd), lead (Pb), and nickel (Ni) are of particular concern due to their high toxicity, persistence in the environment, and tendency to accumulate in plant tissues. This study examines the effects of these heavy metals on the photosynthetic pigments of Vigna radiata L. (mung bean) seedlings, a nutritionally important legume crop. Seedlings were exposed to different concentrations of Cd, Pb, and Ni, and their total chlorophyll and carotenoid contents were measured. The results showed that all three heavy metals significantly reduced pigment levels, with the degree of reduction increasing alongside concentration. At 1000 ppm, cadmium caused the greatest decline in both chlorophyll and carotenoid levels, followed by lead and then nickel, establishing a toxicity order of Cd > Pb > Ni. The substantial decrease in photosynthetic pigments indicates impaired photosynthetic activity, leading to reduced plant growth and productivity. These findings underscore the urgent need for effective monitoring and management of heavy metal pollution to safeguard agricultural systems and promote sustainable food production.
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Claims 6
Claim · model-written summary
Cadmium significantly reduced chlorophyll and carotenoid levels, increasingly with dose.
- Taxon
- Vigna radiata L.
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Vigna radiatat0 - Treatment
- cadmium (Cd)e1
- Outcome
- total chlorophyll and carotenoid contentse2
- Direction
- reducede0
- Qualifier
- degree of reduction increasing alongside concentratione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“all three heavy metals significantly reduced pigment levels, with the degree of reduction increasing alongside concentration”
e1“heavy metals such as cadmium (Cd), lead (Pb), and nickel (Ni)”
e2“total chlorophyll and carotenoid contents”
t0“Vigna radiata L.”
Claim · model-written summary
Lead significantly reduced chlorophyll and carotenoid levels, increasingly with dose.
- Taxon
- Vigna radiata L.Vigna radiatat0
- Treatment
- lead (Pb)e1
- Outcome
- total chlorophyll and carotenoid contentse2
- Direction
- reducede0
- Qualifier
- degree of reduction increasing alongside concentratione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all three heavy metals significantly reduced pigment levels, with the degree of reduction increasing alongside concentration”
e1“heavy metals such as cadmium (Cd), lead (Pb), and nickel (Ni)”
e2“total chlorophyll and carotenoid contents”
t0“Vigna radiata L.”
Claim · model-written summary
Nickel significantly reduced chlorophyll and carotenoid levels, increasingly with dose.
- Taxon
- Vigna radiata L.Vigna radiatat0
- Treatment
- nickel (Ni)e1
- Outcome
- total chlorophyll and carotenoid contentse2
- Direction
- reducede0
- Qualifier
- degree of reduction increasing alongside concentratione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all three heavy metals significantly reduced pigment levels, with the degree of reduction increasing alongside concentration”
e1“heavy metals such as cadmium (Cd), lead (Pb), and nickel (Ni)”
e2“total chlorophyll and carotenoid contents”
t0“Vigna radiata L.”
Claim · model-written summary
At 1000 ppm cadmium caused the greatest chlorophyll and carotenoid decline, then lead, then nickel.
- Taxon
- Vigna radiata L.Vigna radiatat0
- Treatment
- cadmiume0
- Outcome
- chlorophyll and carotenoid levelse0
- Direction
- greatest declinee0
- Qualifier
- At 1000 ppme0
- Comparator
- lead and then nickele0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 1000 ppm, cadmium caused the greatest decline in both chlorophyll and carotenoid levels, followed by lead and then nickel, establishing a toxicity order of Cd > Pb > Ni”
t0“Vigna radiata L.”
Claim · model-written summary
The authors interpret pigment loss as indicating impaired photosynthesis and reduced growth and productivity.
- Taxon
- Vigna radiata L.Vigna radiatat0
- Outcome
- reduced plant growth and productivitye0
- Qualifier
- impaired photosynthetic activitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The substantial decrease in photosynthetic pigments indicates impaired photosynthetic activity, leading to reduced plant growth and productivity”
t0“Vigna radiata L.”
Claim · model-written summary
The authors call for monitoring and managing heavy-metal pollution to safeguard agriculture.
- Taxon
- Vigna radiata L.Vigna radiatat0
- Outcome
- effective monitoring and management of heavy metal pollutione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“urgent need for effective monitoring and management of heavy metal pollution to safeguard agricultural systems and promote sustainable food production”
t0“Vigna radiata L.”
The same questions in other papers
nickel atom · physiology: pigments · Vigna radiata (mung bean)Results agree
1 paper in the same direction as this paper
- negative
lead atom · physiology: pigments · Vigna radiata (mung bean)Results agree
2 papers in the same direction as this paper
- negative
- negative
cadmium atom · physiology: pigments · Vigna radiata (mung bean)Results agree
6 papers in the same direction as this paper
- negative
- negative
- negative
3 papers more in this group
See all 7 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.