Abstract
Five tetradentate ligands were synthesized from l -amino acids and utilized for the synthesis of Cu(II)-chelates 1 – 5 . The efficacy of Cu(II)-chelates as copper (Cu) source and growth stimulator in hydroponic cultivation was evaluated with Lactuca sativa . Their stability test was performed at pH 4–10. The results suggested that Cu(II)-chelate 3 is the most pH tolerant complex. Levels of Cu, Zn, and Fe accumulated in plants supplied with Cu(II)-chelates were compared with those supplied with CuSO 4 at the same Cu concentration of 8.0 μM. The results showed that Cu(II)-chelate 3 significantly enhanced Cu, Zn, and Fe content in shoot by 35, 15, and 48%, respectively. Application of Cu(II)-chelate 3 also improved plant dry matter yield by 54%. According to the results, Cu(II)-chelate 3 demonstrated the highest stimulating effect on plant growth and plant mineral accumulation so that it can be used as an alternative to CuSO 4 for supplying Cu in nutrient solutions and enhancing the plant growth.
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Claims 4
Claim · model-written summary
Chelate 3 increased shoot Cu by 35% relative to CuSO 4.
- Taxon
- Lactuca sativa
Lactuca sativat0 - Organ / stage
- shoote0
- Treatment
- Cu(II)-chelate 3e0
- Outcome
- Cue0
- Direction
- enhancede0
- Value
- 35e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cu(II)-chelate 3 significantly enhanced Cu, Zn, and Fe content in shoot by 35, 15, and 48%, respectively”
t0“Lactuca sativa”
Claim · model-written summary
Chelate 3 increased shoot Zn by 15%.
- Taxon
- Lactuca sativaLactuca sativat0
- Organ / stage
- shoote0
- Treatment
- Cu(II)-chelate 3e0
- Outcome
- Zne0
- Direction
- enhancede0
- Value
- 15e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cu(II)-chelate 3 significantly enhanced Cu, Zn, and Fe content in shoot by 35, 15, and 48%, respectively”
t0“Lactuca sativa”
Claim · model-written summary
Chelate 3 increased shoot Fe by 48%.
- Taxon
- Lactuca sativaLactuca sativat0
- Organ / stage
- shoote0
- Treatment
- Cu(II)-chelate 3e0
- Outcome
- Fee0
- Direction
- enhancede0
- Value
- 48%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cu(II)-chelate 3 significantly enhanced Cu, Zn, and Fe content in shoot by 35, 15, and 48%, respectively”
t0“Lactuca sativa”
Claim · model-written summary
Chelate 3 improved plant dry matter yield by 54%.
- Taxon
- Lactuca sativaLactuca sativat0
- Treatment
- Cu(II)-chelate 3e0
- Outcome
- plant dry matter yielde0
- Direction
- improvede0
- Value
- 54%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of Cu(II)-chelate 3 also improved plant dry matter yield by 54%”
t0“Lactuca sativa”
The same questions in other papers
copper atom · yield · Lactuca sativa (garden lettuce)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- no effect
1 paper more in this group
See all 5 papers →copper atom · nutrient: content · Lactuca sativa (garden lettuce)Results agree
1 paper in the same direction as this paper
- positive
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.