Abstract
Seedlings of four vegetable species (maize, tomato, radish and onion) were treated for 7 days with methyl jasmonate (MeJA) vapors. MeJA accelerated senescence process of plant tissues and accumulation of anthocyanins. The only exception were hypocotyls of radish, which was found to decrease of the anthocyanin content under the influence of MeJA. It has been shown that MeJA has a different impact on the content of free biogenic amines. In case of leaves and epicotyls of maize and tomato hypocotyls, MeJA had no effect on levels of putrescine (Put). The leaves of tomatoes have shown to increase the putrescine level as a result of the impact of MeJA vapors. However, in the tissues of radish and onion very large decline in putrescine and spermidine content under the influence of the phytohormone were observed. The presence of small amounts of spermine was found only in tissues of radish, and onion, which does not affect the use of MeJA. In tissues of maize the presence of a significant content of 2-phenylethylamine (PEA) were found. Use for 7 days of MeJA vapors resulted in 3-fold increase in the content of the PEA in maize leaves. Small levels of the amine has also been found in tomato hypocotyls, where use of MeJA caused reduction its content. Obtained results show a little relationship between the activity of the studied enzymes (ornithine decarboxylase (ODC), lysine decarboxylase (LDC) and tyrosine decarboxylase (TYDC)) and the contents of the amines in seedlings of four vegetable species. No free cadaverine and tyramine were found, and therefore probably both polyamines might be present as conjugates. Putrescine also may be present in bound form. Moreover, since putrescine can be synthesized directly from ornithine or indirectly from arginine via agmatine, the activity of ODC alone did not give a full picture of the impact of MeJA on Put accumulation.
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Claims 18
Claim · model-written summary
MeJA accelerated senescence in vegetable seedlings.
- Taxon
- maize, tomato, radish and onion
Raphanus sativus
Solanum lycopersicum
Zea mays
Allium cepae0 - Treatment
- methyl jasmonate (MeJA) vaporse0
- Outcome
- senescence process of plant tissuese0
- Direction
- acceleratede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedlings of four vegetable species (maize, tomato, radish and onion) were treated for 7 days with methyl jasmonate (MeJA) vapors. MeJA accelerated senescence process of plant tissues”
Claim · model-written summary
MeJA increased anthocyanin accumulation in the treated vegetable seedlings overall.
- Taxon
- maize, tomato, radish and onionRaphanus sativusSolanum lycopersicumZea maysAllium cepae0
- Treatment
- methyl jasmonate (MeJA) vaporse0
- Outcome
- accumulation of anthocyaninse0
- Direction
- acceleratede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedlings of four vegetable species (maize, tomato, radish and onion) were treated for 7 days with methyl jasmonate (MeJA) vapors. MeJA accelerated senescence process of plant tissues and accumulation of anthocyanins.”
Claim · model-written summary
MeJA decreased anthocyanin content in radish hypocotyls.
- Taxon
- radishRaphanus sativuse0
- Organ / stage
- hypocotylse0
- Treatment
- MeJAe0
- Outcome
- anthocyanin contente0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hypocotyls of radish, which was found to decrease of the anthocyanin content under the influence of MeJA”
Claim · model-written summary
MeJA did not affect putrescine levels in maize leaves and epicotyls.
- Organ / stage
- leaves and epicotylse0
- Treatment
- MeJAe0
- Outcome
- levels of putrescine (Put)e0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaves and epicotyls of maize and tomato hypocotyls, MeJA had no effect on levels of putrescine (Put)”
Claim · model-written summary
MeJA did not affect putrescine levels in tomato hypocotyls.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- hypocotylse0
- Treatment
- MeJAe0
- Outcome
- levels of putrescine (Put)e0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaves and epicotyls of maize and tomato hypocotyls, MeJA had no effect on levels of putrescine (Put)”
Claim · model-written summary
MeJA increased putrescine in tomato leaves.
- Taxon
- tomatoesSolanum lycopersicume0
- Organ / stage
- leavese0
- Treatment
- MeJA vaporse0
- Outcome
- putrescine levele0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The leaves of tomatoes have shown to increase the putrescine level as a result of the impact of MeJA vapors.”
Claim · model-written summary
MeJA markedly reduced putrescine and spermidine in radish tissues.
- Taxon
- radishRaphanus sativuse0
- Organ / stage
- tissuese0
- Treatment
- methyl jasmonate (MeJA) vaporse1
- Outcome
- putrescine and spermidine contente0
- Direction
- very large declinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the tissues of radish and onion very large decline in putrescine and spermidine content under the influence of the phytohormone”
e1“methyl jasmonate (MeJA) vapors”
Claim · model-written summary
MeJA markedly reduced putrescine and spermidine in onion tissues.
- Taxon
- onionAllium cepae0
- Organ / stage
- tissuese0
- Treatment
- methyl jasmonate (MeJA) vaporse1
- Outcome
- putrescine and spermidine contente0
- Direction
- very large declinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the tissues of radish and onion very large decline in putrescine and spermidine content under the influence of the phytohormone”
e1“methyl jasmonate (MeJA) vapors”
Claim · model-written summary
Small amounts of spermine occurred only in radish and onion tissues and were unchanged by MeJA.
- Taxon
- radish, and onionRaphanus sativusAllium cepae0
- Organ / stage
- tissuese0
- Outcome
- small amounts of sperminee0
- Direction
- does not affecte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The presence of small amounts of spermine was found only in tissues of radish, and onion, which does not affect the use of MeJA.”
Claim · model-written summary
Maize tissues contained significant 2-phenylethylamine.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In tissues of maize the presence of a significant content of 2-phenylethylamine (PEA) were found.”
Claim · model-written summary
Seven days of MeJA increased PEA in maize leaves threefold.
- Organ / stage
- leavese0
- Treatment
- MeJA vaporse0
- Outcome
- content of the PEAe0
- Direction
- increasee0
- Value
- 3-folde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Use for 7 days of MeJA vapors resulted in 3-fold increase in the content of the PEA in maize leaves.”
Claim · model-written summary
Tomato hypocotyls had small levels of the amine.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- hypocotylse0
- Outcome
- Small levels of the aminee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Small levels of the amine has also been found in tomato hypocotyls”
Claim · model-written summary
MeJA reduced the amine content of tomato hypocotyls.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- hypocotylse0
- Treatment
- MeJAe0
- Outcome
- its contente0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Small levels of the amine has also been found in tomato hypocotyls, where use of MeJA caused reduction its content.”
Claim · model-written summary
Studied decarboxylase activities related only weakly to amine contents across the four seedlings.
- Taxon
- maize, tomato, radish and onionRaphanus sativusSolanum lycopersicumZea maysAllium cepat0
- Gene
- ornithine decarboxylase (ODC), lysine decarboxylase (LDC) and tyrosine decarboxylase (TYDC)e0
- Outcome
- contents of the aminese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Obtained results show a little relationship between the activity of the studied enzymes (ornithine decarboxylase (ODC), lysine decarboxylase (LDC) and tyrosine decarboxylase (TYDC)) and the contents of the amines in seedlings of four vegetable species.”
t0“Seedlings of four vegetable species (maize, tomato, radish and onion)”
Claim · model-written summary
Free cadaverine and tyramine were absent from the sampled seedlings.
- Taxon
- maize, tomato, radish and onionRaphanus sativusSolanum lycopersicumZea maysAllium cepat0
- Outcome
- No free cadaverine and tyraminee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No free cadaverine and tyramine were found”
t0“Seedlings of four vegetable species (maize, tomato, radish and onion)”
Claim · model-written summary
The authors inferred cadaverine and tyramine might occur as conjugates.
- Taxon
- maize, tomato, radish and onionRaphanus sativusSolanum lycopersicumZea maysAllium cepat0
- Outcome
- both polyamines might be present as conjugatese0
- Qualifier
- probablye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No free cadaverine and tyramine were found, and therefore probably both polyamines might be present as conjugates.”
t0“Seedlings of four vegetable species (maize, tomato, radish and onion)”
Claim · model-written summary
The authors suggested putrescine might also occur in bound form.
- Taxon
- maize, tomato, radish and onionRaphanus sativusSolanum lycopersicumZea maysAllium cepat0
- Outcome
- Putrescine also may be present in bound forme0
- Qualifier
- bound forme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Putrescine also may be present in bound form.”
t0“Seedlings of four vegetable species (maize, tomato, radish and onion)”
Claim · model-written summary
The authors concluded ODC activity alone did not fully represent MeJA effects on putrescine accumulation.
- Taxon
- maize, tomato, radish and onionRaphanus sativusSolanum lycopersicumZea maysAllium cepat0
- Gene
- ODCe0
- Outcome
- impact of MeJA on Put accumulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the activity of ODC alone did not give a full picture of the impact of MeJA on Put accumulation”
t0“Seedlings of four vegetable species (maize, tomato, radish and onion)”
The same questions in other papers
(-)-methyl jasmonate · molecular: metabolites · Solanum lycopersicum (tomato)Results differ
3 papers in the same direction as this paper · 13 in the opposite direction
- positive
- positive
- positive
13 papers more in this group
See all 17 papers →(-)-methyl jasmonate · quality: postharvest · Raphanus sativus (radish)Positive and negative results
1 in the opposite direction
- positive
(-)-methyl jasmonate · quality: postharvest · Solanum lycopersicum (tomato)Positive and negative results
2 in the opposite direction
- positive
- positive
(-)-methyl jasmonate · molecular: metabolites · Zea mays (maize)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
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.