Abstract
A short time effects of 25 and 150 µM Cu2+ or 50 µM methyl jasmonate (MJ) on growth of roots and leaves of Phaseolus coccineus, Allium cepa and Zea mays were investigated. Both Cu2+ and MJ inhibited root growth. Jasmonate synthesis inhibitors (ibuprofen, IB, salicylhydroxamic acid, SHAM, and propylgallate, PG) partially reversed the inhibitory effect of Cu2+ in P. coccineus, but in A. cepa this effect was not clear. Pretreatment with NADPH oxidase inhibitor (20 mM imidazole, IM), and especially ethylene inhibitor (silver thiosulphate, STS) mostly weakened Cu2+ effect on root growth in P. coccineus and A. cepa. The growth of P. coccineus leaves also slowed down by Cu2+ and this effect was partially ameliorated by IB, PG and IM, and completely by SHAM and STS. In Z. mays the effect of STS was considerably lower than that of PG and SHAM which reversed the effect of Cu2+. These results indicate that jasmonate, ethylene and NADPH oxidase activity may be involved in Cu2+ inhibitory action on the roots of dicotyledon plants, but in A. cepa only ethylene and NADPH oxidase are involved. However, leaf growth inhibition induced by excess Cu2+ is connected in Z. mays especially with jasmonate, and in P. coccineus with ethylene, NADPH oxidase and, to a minor degree, with jasmonate.
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Claims 11
Claim · model-written summary
Cu2+ inhibited root growth in the studied plants.
- Taxon
- Phaseolus coccineus
Phaseolus coccineust1 - Treatment
- Cu2+e0
- Outcome
- root growthe0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both Cu2+ and MJ inhibited root growth.”
t0“root and leaf growth”
t1“Phaseolus coccineus, Allium cepa and Zea mays”
Claim · model-written summary
MJ inhibited root growth in the studied plants.
- Taxon
- Allium cepa
Allium cepat1 - Treatment
- MJe0
- Outcome
- root growthe0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both Cu2+ and MJ inhibited root growth.”
t0“root and leaf growth”
t1“Phaseolus coccineus, Allium cepa and Zea mays”
Claim · model-written summary
Jasmonate synthesis inhibitors partially reversed copper inhibition in P. coccineus roots.
- Taxon
- Phaseolus coccineusPhaseolus coccineust1
- Treatment
- Jasmonate synthesis inhibitorse0
- Outcome
- inhibitory effect of Cu2+e0
- Direction
- partially reversede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Jasmonate synthesis inhibitors (ibuprofen, IB, salicylhydroxamic acid, SHAM, and propylgallate, PG) partially reversed the inhibitory effect of Cu2+ in P. coccineus, but in A. cepa this effect was not clear.”
t0“root and leaf growth”
t1“Phaseolus coccineus, Allium cepa and Zea mays”
Claim · model-written summary
The reversal by jasmonate synthesis inhibitors in A. cepa was unclear.
- Taxon
- Allium cepaAllium cepat1
- Treatment
- Jasmonate synthesis inhibitorse0
- Outcome
- effect of Cu2+e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Jasmonate synthesis inhibitors (ibuprofen, IB, salicylhydroxamic acid, SHAM, and propylgallate, PG) partially reversed the inhibitory effect of Cu2+ in P. coccineus, but in A. cepa this effect was not clear.”
t0“root and leaf growth”
t1“Phaseolus coccineus, Allium cepa and Zea mays”
Claim · model-written summary
Imidazole pretreatment weakened the copper effect on root growth in P. coccineus and A. cepa.
- Taxon
- Phaseolus coccineusPhaseolus coccineust1
- Treatment
- 20 mM imidazole, IMe0
- Outcome
- Cu2+ effect on root growthe0
- Direction
- weakenede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pretreatment with NADPH oxidase inhibitor (20 mM imidazole, IM), and especially ethylene inhibitor (silver thiosulphate, STS) mostly weakened Cu2+ effect on root growth in P. coccineus and A. cepa.”
t0“root and leaf growth”
t1“Phaseolus coccineus, Allium cepa and Zea mays”
Claim · model-written summary
Silver thiosulphate pretreatment especially weakened the copper effect on root growth.
- Taxon
- Allium cepaAllium cepat1
- Treatment
- silver thiosulphate, STSe0
- Outcome
- Cu2+ effect on root growthe0
- Direction
- weakenede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pretreatment with NADPH oxidase inhibitor (20 mM imidazole, IM), and especially ethylene inhibitor (silver thiosulphate, STS) mostly weakened Cu2+ effect on root growth in P. coccineus and A. cepa.”
t0“root and leaf growth”
t1“Phaseolus coccineus, Allium cepa and Zea mays”
Claim · model-written summary
Copper slowed P. coccineus leaf growth.
- Taxon
- Phaseolus coccineusPhaseolus coccineust1
- Treatment
- Cu2+e0
- Outcome
- growth of P. coccineus leavese0
- Direction
- slowed downe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The growth of P. coccineus leaves also slowed down by Cu2+ and this effect was partially ameliorated by IB, PG and IM, and completely by SHAM and STS.”
t0“root and leaf growth”
t1“Phaseolus coccineus, Allium cepa and Zea mays”
Claim · model-written summary
IB, PG and IM partially ameliorated copper inhibition of P. coccineus leaf growth.
- Taxon
- Phaseolus coccineusPhaseolus coccineust1
- Treatment
- IB, PG and IMe0
- Outcome
- growth of P. coccineus leavese0
- Direction
- partially amelioratede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The growth of P. coccineus leaves also slowed down by Cu2+ and this effect was partially ameliorated by IB, PG and IM, and completely by SHAM and STS.”
t0“root and leaf growth”
t1“Phaseolus coccineus, Allium cepa and Zea mays”
Claim · model-written summary
SHAM and STS completely ameliorated copper inhibition of P. coccineus leaf growth.
- Taxon
- Phaseolus coccineusPhaseolus coccineust1
- Treatment
- SHAM and STSe0
- Outcome
- growth of P. coccineus leavese0
- Direction
- completelye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The growth of P. coccineus leaves also slowed down by Cu2+ and this effect was partially ameliorated by IB, PG and IM, and completely by SHAM and STS.”
t0“root and leaf growth”
t1“Phaseolus coccineus, Allium cepa and Zea mays”
Claim · model-written summary
STS had a considerably lower effect than PG and SHAM in Z. mays.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In Z. mays the effect of STS was considerably lower than that of PG and SHAM which reversed the effect of Cu2+.”
t0“root and leaf growth”
t1“Phaseolus coccineus, Allium cepa and Zea mays”
Claim · model-written summary
PG and SHAM reversed the copper effect in Z. mays.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In Z. mays the effect of STS was considerably lower than that of PG and SHAM which reversed the effect of Cu2+.”
t0“root and leaf growth”
t1“Phaseolus coccineus, Allium cepa and Zea mays”
The same questions in other papers
(-)-methyl jasmonate · growth · Allium cepa (onion)Positive and negative results
1 in the opposite direction
- positive
silver atom · growth · Allium cepa (onion)Results agree
2 papers in the same direction as this paper
- positive
- 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.