Abstract
A floating system was established in a heated glass greenhouse in order to investigate whether the effect of amino acids (0.25 or 0.50% of a commercial amino acid (AA) solution Amino16®) during peppermint and spearmint production on plant developmental and nutritional status may be in part attributed to salinity induced osmotic stress. For this reason, in some nutrient solutions, three levels of salinity were induced by adding 0, 10, or 20 mM NaCl. According to the results, it can be concluded that spearmint is mostly favored by the highest amino acid supplement of the nutrient solution (0.50%) in terms of a substantial improvement of the antioxidant nutritional quality (by up to 130%) at the expense of a reduced biomass production (by <30%). Enzymic antioxidant defense mechanism (APX and POD) was efficiently activated, preventing severe lipid peroxidation and the accumulation of reactive oxygen species such as H2O2 and maintaining the proline content at the normal levels. The osmotic stress that was induced by the excessive AA concentration and confirmed by the chlorophyl fluorescence variations was probably related to NH4+ excess supply in the growing media and was not associated with the elevated electrical conductivity in the solution. The absence of any adverse stressful consequences upon the addition of 20 mM NaCl may be attributed to the high salt tolerance of peppermint and spearmint species.
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Claims 8
Claim · model-written summary
The highest amino acid supplement improved spearmint antioxidant nutritional quality by up to 130%.
- Taxon
- spearmint
Mentha spicatae0 - Treatment
- highest amino acid supplement of the nutrient solution (0.50%)e0
- Outcome
- antioxidant nutritional qualitye0
- Direction
- improvemente0
- Value
- 130%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spearmint is mostly favored by the highest amino acid supplement of the nutrient solution (0.50%) in terms of a substantial improvement of the antioxidant nutritional quality (by up to 130%)”
Claim · model-written summary
The highest amino acid supplement reduced spearmint biomass by less than 30%.
- Taxon
- spearmintMentha spicatat0
- Treatment
- highest amino acid supplement of the nutrient solution (0.50%)e1
- Outcome
- biomass productione0
- Direction
- reducede0
- Value
- <30%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the expense of a reduced biomass production (by <30%).”
t0“Spearmint Crops”
t1“Spearmint Crops”
e1“spearmint is mostly favored by the highest amino acid supplement of the nutrient solution (0.50%)”
Claim · model-written summary
APX and POD antioxidant defense was activated in the mint system.
- Taxon
- Peppermint and SpearmintMentha spicata
Mentha ×piperitat0 - Outcome
- Enzymic antioxidant defense mechanism (APX and POD)e0
- Direction
- activatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Enzymic antioxidant defense mechanism (APX and POD) was efficiently activated”
t0“Peppermint and Spearmint Crops”
t1“Peppermint and Spearmint Crops”
Claim · model-written summary
Severe lipid peroxidation and H2O2 accumulation were prevented.
- Taxon
- Peppermint and SpearmintMentha spicataMentha ×piperitat0
- Outcome
- severe lipid peroxidation and the accumulation of reactive oxygen species such as H2O2e0
- Direction
- preventinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“preventing severe lipid peroxidation and the accumulation of reactive oxygen species such as H2O2”
t0“Peppermint and Spearmint Crops”
t1“Peppermint and Spearmint Crops”
Claim · model-written summary
Proline content stayed at normal levels.
- Taxon
- Peppermint and SpearmintMentha spicataMentha ×piperitat0
- Outcome
- proline contente0
- Direction
- maintaininge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maintaining the proline content at the normal levels.”
t0“Peppermint and Spearmint Crops”
t1“Peppermint and Spearmint Crops”
Claim · model-written summary
Excess amino acid concentration induced osmotic stress, indicated by chlorophyll fluorescence changes.
- Taxon
- Peppermint and SpearmintMentha spicataMentha ×piperitat0
- Treatment
- excessive AA concentratione0
- Outcome
- osmotic stresse0
- Qualifier
- probably related to NH4+ excess supply in the growing mediae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The osmotic stress that was induced by the excessive AA concentration and confirmed by the chlorophyl fluorescence variations was probably related to NH4+ excess supply in the growing media”
t0“Peppermint and Spearmint Crops”
t1“Peppermint and Spearmint Crops”
Claim · model-written summary
Elevated solution conductivity was not associated with the osmotic stress.
- Taxon
- Peppermint and SpearmintMentha spicataMentha ×piperitat0
- Outcome
- elevated electrical conductivitye0
- Direction
- not associatede0
- Setting
- solutione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“was not associated with the elevated electrical conductivity in the solution.”
t0“Peppermint and Spearmint Crops”
t1“Peppermint and Spearmint Crops”
Claim · model-written summary
Adding 20 mM NaCl caused no adverse stress consequences in peppermint and spearmint.
- Taxon
- peppermint and spearmintMentha spicataMentha ×piperitae0
- Treatment
- addition of 20 mM NaCle0
- Outcome
- adverse stressful consequencese0
- Direction
- absencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The absence of any adverse stressful consequences upon the addition of 20 mM NaCl may be attributed to the high salt tolerance of peppermint and spearmint species.”
The same questions in other papers
fertilization · yield · Mentha spicata (spearmint)Positive and negative results
4 in the opposite direction
- positive
- positive
- positive
1 paper more in this group
See all 5 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.