Abstract
A study was carried out on root tips and leaves of Vigna radiata, 15 days old plantlets grown in nutrient Hoagland media were exposed to various levels of cadmium chloride (0.05, 0.10 and 0.50 mM) for 48 and 72 h. The plant tissues were analyzed for mitotic index, chromosomal variations, root-shoot ratio, leaf area, chlorophyll estimation, and the activity of nitrate content, nitrate reductase (NR), soluble protein and proline content. A number of chromosomal variations such as laggard chromosomes, anaphasic bridges, and unidistribution of chromatin material were observed in root tips. A reduction in mitotic index, root-shoot ratio, area of leaf and chlorophyll estimation was observed at all concentrations of cadmium. Moreover, activity of nitrate reductase (NR), nitrate content and soluble protein content was also found to be decreased. However, rate of proline content was found to be increased on increasing the concentration of cadmium. An increase in the levels of proline suggests its possible incorporation in synthesis of the phytochelatins and metallothioneins to sequester and combat Cd-stress. Key words: Vigna radiata, phytochelatins, cytogenetics, cadmium.
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Claims 7
Claim · model-written summary
Cadmium exposure produced chromosomal abnormalities in root tips.
- Taxon
- Vigna radiata
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Vigna radiatat0 - Organ / stage
- root tipse0
- Outcome
- laggard chromosomes, anaphasic bridges, and unidistribution of chromatin materiale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“A number of chromosomal variations such as laggard chromosomes, anaphasic bridges, and unidistribution of chromatin material were observed in root tips.”
t0“Vigna radiata”
Claim · model-written summary
Cadmium reduced mitotic index.
- Taxon
- Vigna radiataVigna radiatat0
- Treatment
- cadmiume0
- Outcome
- mitotic indexe0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A reduction in mitotic index, root-shoot ratio, area of leaf and chlorophyll estimation was observed at all concentrations of cadmium.”
t0“Vigna radiata”
Claim · model-written summary
Cadmium reduced root-shoot ratio and leaf area.
- Taxon
- Vigna radiataVigna radiatat0
- Treatment
- cadmiume0
- Outcome
- root-shoot ratio, area of leafe0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A reduction in mitotic index, root-shoot ratio, area of leaf and chlorophyll estimation was observed at all concentrations of cadmium.”
t0“Vigna radiata”
Claim · model-written summary
Cadmium reduced chlorophyll.
- Taxon
- Vigna radiataVigna radiatat0
- Treatment
- cadmiume0
- Outcome
- chlorophyll estimatione0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A reduction in mitotic index, root-shoot ratio, area of leaf and chlorophyll estimation was observed at all concentrations of cadmium.”
t0“Vigna radiata”
Claim · model-written summary
Cadmium decreased nitrate reductase activity, nitrate and soluble protein content.
- Taxon
- Vigna radiataVigna radiatat0
- Treatment
- cadmiumt0
- Outcome
- activity of nitrate reductase (NR), nitrate content and soluble protein contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“activity of nitrate reductase (NR), nitrate content and soluble protein content was also found to be decreased.”
t0“response of Vigna radiata to cadmium stress”
Claim · model-written summary
Proline content increased with cadmium concentration.
- Taxon
- Vigna radiataVigna radiatat0
- Treatment
- cadmiume0
- Outcome
- proline contente0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rate of proline content was found to be increased on increasing the concentration of cadmium.”
t0“Vigna radiata”
Claim · model-written summary
The authors suggest proline may contribute to phytochelatin and metallothionein synthesis under cadmium stress.
- Taxon
- Vigna radiataVigna radiatat0
- Compound
- prolinee0
- Outcome
- synthesis of the phytochelatins and metallothioneinse0
- Qualifier
- possible incorporatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An increase in the levels of proline suggests its possible incorporation in synthesis of the phytochelatins and metallothioneins to sequester and combat Cd-stress.”
t0“Vigna radiata”
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See all 21 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.