Abstract
Influence of iron nutrition in Pb-treated Ailanthus altissima (Mill.) Swingle seedlings was investigated by measurement of photosynthetic efficiency (Fv/Fm), photosynthetic pigment content, and biomass production. The data of Fe-sufficient and Fe-deficient hydroponically grown plants shows that the presence of Fe in growing media in Pb-treated plants increased Fv/Fm compared to Pb-treated plants without Fе. It was also reduced half time, requiring it to reach maximum fluorescence. Chlorophyll as well as carotenoid content did not decrease in Pb-treated A. altissima plants grown with Fe. There was also no significant reduction in root and shoot biomass in all Pb-treated plants when they were constantly supplied with Fe. These results suggest that Fe nutrition increase tolerance to Pb stress in A. altissima plants. This finding could be useful for improving recultivation methods on Pb-polluted sites.
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Claims 6
Claim · model-written summary
Fe supply increased Fv/Fm in Pb-treated Ailanthus versus Fe-deficient Pb-treated plants.
- Taxon
- Ailanthus altissima (Mill.) Swingle
.jpg?width=60)
Ailanthus altissimust0 - Treatment
- presence of Fe in growing mediae0
- Outcome
- Fv/Fme0
- Direction
- increasede0
- Comparator
- Pb-treated plants without Fеe0
- Setting
- hydroponically growne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The data of Fe-sufficient and Fe-deficient hydroponically grown plants shows that the presence of Fe in growing media in Pb-treated plants increased Fv/Fm compared to Pb-treated plants without Fе.”
t0“Fe Nutrition on Photosynthesis in Pb Treated Ailanthus altissima (Mill.) Swingle Seedlings”
Claim · model-written summary
Fe supply reduced the time to maximum fluorescence in Pb-treated seedlings.
- Taxon
- Ailanthus altissima (Mill.) SwingleAilanthus altissimust0
- Treatment
- Fet0
- Outcome
- half time, requiring it to reach maximum fluorescencee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was also reduced half time, requiring it to reach maximum fluorescence.”
t0“Fe Nutrition on Photosynthesis in Pb Treated Ailanthus altissima (Mill.) Swingle Seedlings”
Claim · model-written summary
Chlorophyll and carotenoid content did not decrease in Pb-treated Ailanthus supplied with Fe.
- Taxon
- A. altissimaAilanthus altissimuse0
- Treatment
- Pb-treatede0
- Outcome
- Chlorophyll as well as carotenoid contente0
- Direction
- did not decreasee0
- Qualifier
- grown with Fee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyll as well as carotenoid content did not decrease in Pb-treated A. altissima plants grown with Fe.”
Claim · model-written summary
Root and shoot biomass showed no significant reduction under Pb treatment with constant Fe supply.
- Taxon
- Ailanthus altissima (Mill.) SwingleAilanthus altissimust0
- Treatment
- Pb-treatede0
- Outcome
- root and shoot biomasse0
- Direction
- no significant reductione0
- Qualifier
- constantly supplied with Fee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was also no significant reduction in root and shoot biomass in all Pb-treated plants when they were constantly supplied with Fe.”
t0“Fe Nutrition on Photosynthesis in Pb Treated Ailanthus altissima (Mill.) Swingle Seedlings”
Claim · model-written summary
The authors infer that Fe nutrition increases Pb stress tolerance in Ailanthus.
- Taxon
- A. altissimaAilanthus altissimuse0
- Treatment
- Fe nutritione0
- Outcome
- tolerance to Pb stresse0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These results suggest that Fe nutrition increase tolerance to Pb stress in A. altissima plants.”
Claim · model-written summary
The authors suggest applying the finding to improve recultivation on Pb-polluted sites.
- Taxon
- Ailanthus altissima (Mill.) SwingleAilanthus altissimust0
- Outcome
- improving recultivation methodse0
- Setting
- Pb-polluted sitese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This finding could be useful for improving recultivation methods on Pb-polluted sites.”
t0“Fe Nutrition on Photosynthesis in Pb Treated Ailanthus altissima (Mill.) Swingle Seedlings”
The same questions in other papers
lead atom · growth · Ailanthus altissimus (tree-of-heaven)Positive and negative results
2 in the opposite direction
- no effect
- no effect
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.