Abstract
The present study was carried out in order to reveal the effects of exogen melatonin (50MT: 50 µM -100 MT: 100 µM) treatment on the growth rate characteristic and bioactive compound content variations of three spinach cultivars (Acosta-ACO; Anlani-ANL, and Matador-MTR, respectively) grown under cold conditions.While MTR was the richest variety in terms of chlorophyll a, chlorophyll b, total chlorophyll, and carotenoid content, ANL was the richest variety in terms of Chl a to Chl b ratio, and xanthophyll content.Ascorbic acid and protein concentration were stimulated by MT in all three variants, but ANL had the highest value.While the proline content of cultivars decreased with only 50 MT in ACO when compared to the control, GB content decreased in MT doses.RWC increased with MT in ANL, whereas it caused to a decrease in RWC of 100 MT in ACO and 50 MT in MTR.MDA concentration was at a lower level and decreased only in ACO with 50 MT when compared to the control, while the H2O2 concentration was higher at MT doses in all three species.MT treatment stimulated SOD activity in ACO and ANL and increased POD activity in all three variants.Considering the growth characteristics such as root/stem length, leaf characteristics, and biomass, exogenous MT doses had positive effects on all three cultivars.These findings suggest that foliar MT treatment can attenuate cold damage by enhancing the enzymatic and non-enzymatic antioxidant capacity of spinach seedlings, as well as the growth rate.
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Claims 15
Claim · model-written summary
Matador had the highest chlorophyll and carotenoid content.
- Material
- MTRe0
- Outcome
- chlorophyll a, chlorophyll b, total chlorophyll, and carotenoid contente0
- Direction
- richeste0
Not reportedTaxon
Verbatim
e0“MTR was the richest variety in terms of chlorophyll a, chlorophyll b, total chlorophyll, and carotenoid content”
Claim · model-written summary
Anlani had the highest chlorophyll a to b ratio and xanthophyll content.
Not reportedTaxon
Verbatim
e0“ANL was the richest variety in terms of Chl a to Chl b ratio, and xanthophyll content”
Claim · model-written summary
Melatonin stimulated ascorbic acid and protein concentration in all three cultivars.
- Treatment
- MTe0
- Outcome
- Ascorbic acid and protein concentratione0
- Direction
- stimulatede0
- Qualifier
- all three variantse0
Not reportedTaxonComparator
Verbatim
e0“Ascorbic acid and protein concentration were stimulated by MT in all three variants”
Claim · model-written summary
Anlani had the highest ascorbic acid and protein response.
Not reportedTaxon
Verbatim
e0“but ANL had the highest value”
Claim · model-written summary
At 50 MT, proline content decreased in Acosta relative to control.
Not reportedTaxon
Verbatim
e0“proline content of cultivars decreased with only 50 MT in ACO when compared to the control”
Claim · model-written summary
Glycine betaine content decreased at melatonin doses.
Not reportedTaxonComparator
Verbatim
e0“GB content decreased in MT doses”
Claim · model-written summary
Melatonin increased relative water content in Anlani.
Not reportedTaxonComparator
Verbatim
e0“RWC increased with MT in ANL”
Claim · model-written summary
100 MT decreased relative water content in Acosta.
Not reportedTaxonComparator
Verbatim
e0“decrease in RWC of 100 MT in ACO”
Claim · model-written summary
50 MT decreased relative water content in Matador.
Not reportedTaxonComparatorOutcomeDirection
Verbatim
e0“50 MT in MTR”
Claim · model-written summary
50 MT decreased MDA in Acosta relative to control.
Not reportedTaxon
Verbatim
e0“MDA concentration was at a lower level and decreased only in ACO with 50 MT when compared to the control”
Claim · model-written summary
Hydrogen peroxide concentration was higher at melatonin doses in all three cultivars.
Not reportedTaxonComparator
Verbatim
e0“H2O2 concentration was higher at MT doses in all three species”
Claim · model-written summary
Melatonin stimulated SOD activity in Acosta and Anlani.
Not reportedTaxonComparator
Verbatim
e0“MT treatment stimulated SOD activity in ACO and ANL”
Claim · model-written summary
Melatonin increased POD activity in all three cultivars.
Not reportedTaxonTreatmentComparator
Verbatim
e0“increased POD activity in all three variants”
Claim · model-written summary
Melatonin doses improved root and stem length, leaf traits and biomass across cultivars.
- Treatment
- exogenous MT dosese0
- Outcome
- root/stem length, leaf characteristics, and biomasse0
- Direction
- positive effectse0
- Qualifier
- all three cultivarse0
Not reportedTaxonComparator
Verbatim
e0“growth characteristics such as root/stem length, leaf characteristics, and biomass, exogenous MT doses had positive effects on all three cultivars”
Claim · model-written summary
The authors suggest foliar melatonin attenuates cold damage by strengthening antioxidant capacity and growth.
- Taxon
- spinach
Spinacia oleraceae0 - Treatment
- foliar MT treatmente0
- Outcome
- cold damagee0
- Direction
- attenuatee0
- Qualifier
- enhancing the enzymatic and non-enzymatic antioxidant capacitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar MT treatment can attenuate cold damage by enhancing the enzymatic and non-enzymatic antioxidant capacity of spinach seedlings, as well as the growth rate”