Abstract
Abstract Development of alleviation strategies, which enhance plant growth under heavy metal stress, is important. Inorganic (zeolite) and organic (diethylene triamine penta‐acetic acid, DTPA) amendments affecting the alleviation of lead (Pb) stress in a calcareous soil were tested by investigating leaf nutrient uptake of tomato ( Lycopersicon esculentum L.) plants. Experimental quantities of lead (Pb) at 0, 50, 100 and 150 mg·kg −1 soil, zeolite (clinoptilolite) at 0%, 0.5% and 1%, and DTPA at 0, 50 and 100 mg·kg −1 soil were tested in a factorial experiment with three plant replicates. According to the anova , Pb, zeolite, DTPA and their interactions significantly affected plant concentrations of nitrogen (N), potassium (K), iron (Fe), zinc (Zn), copper (Cu), manganese (Mn) and lead (Pb). With increasing DTPA concentration at different levels of zeolite and Pb, plant concentrations of macro‐ and micronutrients significantly increased. Increasing soil Pb increased leaf Pb concentration and decreased the uptake of N, K, Fe, Zn, Cu and Mn. Although with increasing Pb concentration the uptake of macro‐ and micronutrients decreased in tomato, the use of zeolite and DTPA alleviated this stress by increasing nutrient uptake compared to the control. Interestingly, however, increased levels of zeolite and DTPA led to a decreased uptake of nutrients by plants (compared with control), indicating the absorption of such nutrients by the two amendments and their partial release for further plant use. Zeolite and DTPA may alleviate the negative effects of soil Pb on tomato growth by decreasing nutrient leaching and increasing plant nutrient uptake.
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Claims 9
Claim · model-written summary
Pb, zeolite and DTPA significantly affected leaf concentrations of N, K, Fe, Zn, Cu, Mn and Pb in tomato.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- Pb, zeolite, DTPAe1
- Outcome
- plant concentrations of nitrogen (N), potassium (K), iron (Fe), zinc (Zn), copper (Cu), manganese (Mn) and lead (Pb)e1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“According to the anova , Pb, zeolite, DTPA and their interactions significantly affected plant concentrations of nitrogen (N), potassium (K), iron (Fe), zinc (Zn), copper (Cu), manganese (Mn) and lead (Pb)”
t0“Tomato (Lycopersicon esculentum L.)”
Claim · model-written summary
Increasing DTPA concentration significantly increased plant concentrations of macro- and micronutrients.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- increasing DTPA concentratione2
- Outcome
- plant concentrations of macro‐ and micronutrientse2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“With increasing DTPA concentration at different levels of zeolite and Pb, plant concentrations of macro‐ and micronutrients significantly increased”
t0“Tomato (Lycopersicon esculentum L.)”
Claim · model-written summary
Increasing soil Pb increased leaf Pb concentration in tomato.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- soil Pbe3
- Outcome
- leaf Pb concentratione3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Increasing soil Pb increased leaf Pb concentration and decreased the uptake of N, K, Fe, Zn, Cu and Mn”
t0“Tomato (Lycopersicon esculentum L.)”
Claim · model-written summary
Increasing soil Pb decreased the uptake of N, K and Fe in tomato.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- soil Pbe3
- Outcome
- uptakee3
- Direction
- decreasede3
- Qualifier
- of N, K, Fee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Increasing soil Pb increased leaf Pb concentration and decreased the uptake of N, K, Fe, Zn, Cu and Mn”
t0“Tomato (Lycopersicon esculentum L.)”
Claim · model-written summary
Increasing soil Pb decreased the uptake of Zn, Cu and Mn in tomato.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- soil Pbe3
- Outcome
- uptakee3
- Direction
- decreasede3
- Qualifier
- Zn, Cu and Mne3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Increasing soil Pb increased leaf Pb concentration and decreased the uptake of N, K, Fe, Zn, Cu and Mn”
t0“Tomato (Lycopersicon esculentum L.)”
Claim · model-written summary
Zeolite and DTPA increased nutrient uptake compared with the control in Pb-stressed tomato.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- zeolite and DTPAe4
- Outcome
- nutrient uptakee4
- Direction
- increasinge4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“the use of zeolite and DTPA alleviated this stress by increasing nutrient uptake compared to the control”
t0“Tomato (Lycopersicon esculentum L.)”
Claim · model-written summary
Increased levels of zeolite and DTPA decreased nutrient uptake by tomato compared with the control.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- increased levels of zeolite and DTPAe5
- Outcome
- uptake of nutrients by plantse5
- Direction
- decreasede5
- Comparator
- controle5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Interestingly, however, increased levels of zeolite and DTPA led to a decreased uptake of nutrients by plants (compared with control), indicating the absorption of such nutrients by the two amendments and their partial release for further plant use”
t0“Tomato (Lycopersicon esculentum L.)”
Claim · model-written summary
Zeolite and DTPA may absorb nutrients and partially release them for plant use (authors’ interpretation of the decreased uptake).
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- zeolite and DTPAe5
- Outcome
- uptake of nutrients by plantse5
- Qualifier
- absorption of such nutrients by the two amendmentse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Interestingly, however, increased levels of zeolite and DTPA led to a decreased uptake of nutrients by plants (compared with control), indicating the absorption of such nutrients by the two amendments and their partial release for further plant use”
t0“Tomato (Lycopersicon esculentum L.)”
Claim · model-written summary
Zeolite and DTPA may alleviate the negative effects of soil Pb on tomato growth.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- Zeolite and DTPAe6
- Outcome
- negative effects of soil Pb on tomato growthe6
- Direction
- alleviatee6
- Qualifier
- by decreasing nutrient leaching and increasing plant nutrient uptakee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Zeolite and DTPA may alleviate the negative effects of soil Pb on tomato growth by decreasing nutrient leaching and increasing plant nutrient uptake”
t0“Tomato (Lycopersicon esculentum L.)”
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- no effect
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See all 48 papers →other · growth · Solanum lycopersicum (tomato)Positive and negative results
156 papers in the same direction as this paper · 18 in the opposite direction
- no effect
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See all 175 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.