Abstract
The effect of cadmium on growth and contents of glutathione (GSH) and phytochelatins (PCs) were investigated in roots and leaves of tomato plants (Lycopersicon esculentum Mill. cv. 63/5 F1). The accumulation of Cd increased with external Cd concentrations and was considerably higher in roots than in leaves. Dry mass production decreased under Cd treatment especially in leaves. In both roots and leaves, exposure to Cd caused an appreciable decline in GSH contents and increase in PCs synthesis proportional to Cd concentrations in the growth medium. At the same Cd concentration, PCs production was higher in roots than in leaves. The implication of glutathione in PC synthesis was strongly suggested by the use of buthionine sulfoximine (BSO). The major fraction of Cd accumulated by tomato roots was in the form of a Cd-PCs complex.
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Claims 8
Claim · model-written summary
Tomato cadmium accumulation increased with external Cd concentration.
- Taxon
- tomato plants
Solanum lycopersicumt0 - Treatment
- external Cd concentrationse0
- Outcome
- accumulation of Cde0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The accumulation of Cd increased with external Cd concentrations”
t0“tomato plants”
Claim · model-written summary
Cadmium accumulation was higher in roots than leaves.
- Taxon
- tomato plantsSolanum lycopersicumt0
- Organ / stage
- rootse0
- Outcome
- accumulation of Cde1
- Direction
- considerably highere0
- Comparator
- leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“was considerably higher in roots than in leaves”
e1“The accumulation of Cd increased”
t0“tomato plants”
Claim · model-written summary
Cadmium treatment decreased dry mass, especially in leaves.
- Taxon
- tomato plantsSolanum lycopersicumt0
- Organ / stage
- leavese0
- Treatment
- Cd treatmente0
- Outcome
- Dry mass productione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry mass production decreased under Cd treatment especially in leaves”
t0“tomato plants”
Claim · model-written summary
Cd exposure decreased GSH contents in roots and leaves.
- Taxon
- tomato plantsSolanum lycopersicumt0
- Organ / stage
- roots and leavese0
- Treatment
- exposure to Cde0
- Outcome
- GSH contentse0
- Direction
- declinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In both roots and leaves, exposure to Cd caused an appreciable decline in GSH contents”
t0“tomato plants”
Claim · model-written summary
Cd exposure increased phytochelatin synthesis proportionally to medium Cd concentration in roots and leaves.
- Taxon
- tomato plantsSolanum lycopersicumt0
- Organ / stage
- roots and leavese1
- Treatment
- exposure to Cde0
- Outcome
- PCs synthesise0
- Direction
- increasee0
- Qualifier
- proportional to Cd concentrations in the growth mediume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exposure to Cd caused an appreciable decline in GSH contents and increase in PCs synthesis proportional to Cd concentrations in the growth medium”
e1“In both roots and leaves”
t0“tomato plants”
Claim · model-written summary
At equal Cd concentration, roots produced more PCs than leaves.
- Taxon
- tomato plantsSolanum lycopersicumt0
- Organ / stage
- rootse0
- Outcome
- PCs productione0
- Direction
- highere0
- Comparator
- leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the same Cd concentration, PCs production was higher in roots than in leaves”
t0“tomato plants”
Claim · model-written summary
Buthionine sulfoximine evidence suggested glutathione participates in PC synthesis.
- Taxon
- tomato plantsSolanum lycopersicumt0
- Treatment
- buthionine sulfoximine (BSO)e0
- Compound
- glutathionee0
- Outcome
- PC synthesise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The implication of glutathione in PC synthesis was strongly suggested by the use of buthionine sulfoximine (BSO)”
t0“tomato plants”
Claim · model-written summary
Most Cd accumulated by tomato roots was present as a Cd-PCs complex.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- rootse0
- Outcome
- Cd accumulated by tomato roots was in the form of a Cd-PCs complexe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The major fraction of Cd accumulated by tomato roots was in the form of a Cd-PCs complex”
The same questions in other papers
cadmium atom · yield · Solanum lycopersicum (tomato)Results differ
10 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
9 papers more in this group
See all 13 papers →cadmium atom · molecular: metabolites · Solanum lycopersicum (tomato)Positive and negative results
4 papers in the same direction as this paper · 9 in the opposite direction
- no effect
- negative
- negative
10 papers more in this group
See all 14 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.