Abstract
The interaction of manganese with cadmium (Cd) toxicity was studied on maize plants grown in hydroponics. Manganese supplied as MnSO4clearly alleviated the toxic effect of cadmium on the root growth of maize seedlings. The magnitude of alleviation was dose dependant and total abolition of 10µM Cd toxicity on root growth was observed at Mn/Cd ratio of 20:1. The 12 h pre-treatment with 10μM Cd was generally toxic for nitrate uptake and reduction (both determined in Cd-free media). The beneficial effect of 100μM Mn on this toxicity was confirmed for the low-affinity nitrate uptake system, but on the other hand, Mn alone seems to be slightly toxic for high affinity nitrate uptake system and on the nitrate reductase activity.
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Claims 6
Claim · model-written summary
Manganese alleviated cadmium toxicity to maize seedling root growth.
- Organ / stage
- seedlingse0
- Treatment
- Manganese supplied as MnSO4e0
- Outcome
- root growthe0
- Direction
- alleviatede0
- Comparator
- cadmiume0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Manganese supplied as MnSO4clearly alleviated the toxic effect of cadmium on the root growth of maize seedlings.”
Claim · model-written summary
Alleviation of cadmium toxicity increased with manganese dose.
- Treatment
- Mn/Cd ratio of 20:1e0
- Outcome
- total abolition of 10µM Cd toxicity on root growthe0
- Direction
- total abolitione0
- Value
- 20:1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The magnitude of alleviation was dose dependant and total abolition of 10µM Cd toxicity on root growth was observed at Mn/Cd ratio of 20:1.”
t0“maize seedlings”
Claim · model-written summary
Cadmium pretreatment was toxic to nitrate uptake and reduction.
- Treatment
- 12 h pre-treatment with 10μM Cde0
- Outcome
- nitrate uptake and reductione0
- Direction
- toxice0
- Setting
- Cd-free mediae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 12 h pre-treatment with 10μM Cd was generally toxic for nitrate uptake and reduction (both determined in Cd-free media).”
t0“maize seedlings”
Claim · model-written summary
Manganese alleviated cadmium toxicity in the low-affinity nitrate uptake system.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The beneficial effect of 100μM Mn on this toxicity was confirmed for the low-affinity nitrate uptake system”
t0“maize seedlings”
Claim · model-written summary
Manganese alone appeared slightly toxic to high-affinity nitrate uptake.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mn alone seems to be slightly toxic for high affinity nitrate uptake system”
t0“maize seedlings”
Claim · model-written summary
Manganese alone appeared slightly toxic to nitrate reductase activity.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mn alone seems to be slightly toxic for high affinity nitrate uptake system and on the nitrate reductase activity”
t0“maize seedlings”
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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.