Abstract
Volcanic ash-derived soils are characterized by low pH (pH ≤ 5.5) with increased concentrations of aluminum (Al3+) and manganese (Mn2+), which decreases plant growth, fruit quality, and yield. Methyl jasmonate (MeJA) improves abiotic stress tolerance. Our work aimed to evaluate the application of MeJA’s impact on the growth, antioxidant defense, and fruit quality of highbush blueberry grown under Al and Mn toxicity. A field assay was conducted with four-year-old bushes of highbush blueberry cultivar Legacy under eight treatments (Control, Al (87% of Al saturation), Mn (240 mg kg−1), and Al–Mn with and without MeJA application). Physiological, biochemical, and fruit quality parameters were measured. Growth rate significantly decreased with Al (20%), Mn (45%), and Al–Mn (40%). MeJA application recovered the growth rate. Photosynthetic parameters were not affected. Antioxidant activity increased under all treatments compared with controls, being higher with MeJA application. Total phenols (TP) were decreased in plants under Al (43%) and Mn (20%) compared with controls. MeJA application increased TP in all treatments. Fruits of bushes under Al and Mn toxicity with MeJA applications exhibited an increase in fruit firmness and weight, maintaining suitable contents of soluble solids. Our results provide insights about the beneficial effect of MeJA application on growth, antioxidant properties, and fruit quality of highbush blueberry plants grown in acid soils under Al and Mn toxicity.
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Claims 13
Claim · model-written summary
Al treatment reduced highbush blueberry growth rate by 20%.
- Taxon
- Highbush Blueberry
Vaccinium corymbosumt0 - Treatment
- Ale0
- Outcome
- Growth ratee0
- Direction
- decreasede0
- Value
- 20%e0
- Comparator
- Controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth rate significantly decreased with Al (20%), Mn (45%), and Al–Mn (40%)”
t0“Highbush Blueberry”
e1“Control, Al (87% of Al saturation)”
Claim · model-written summary
Mn treatment reduced highbush blueberry growth rate by 45%.
- Taxon
- Highbush BlueberryVaccinium corymbosumt0
- Treatment
- Mne0
- Outcome
- Growth ratee0
- Direction
- decreasede0
- Value
- 45%e0
- Comparator
- Controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth rate significantly decreased with Al (20%), Mn (45%), and Al–Mn (40%)”
t0“Highbush Blueberry”
e1“Control, Al (87% of Al saturation)”
Claim · model-written summary
Combined Al–Mn treatment reduced highbush blueberry growth rate by 40%.
- Taxon
- Highbush BlueberryVaccinium corymbosumt0
- Treatment
- Al–Mne0
- Outcome
- Growth ratee0
- Direction
- decreasede0
- Value
- 40%e0
- Comparator
- Controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth rate significantly decreased with Al (20%), Mn (45%), and Al–Mn (40%)”
t0“Highbush Blueberry”
e1“Control, Al (87% of Al saturation)”
Claim · model-written summary
MeJA application restored the highbush blueberry growth rate.
- Taxon
- Highbush BlueberryVaccinium corymbosumt0
- Treatment
- MeJA applicatione0
- Outcome
- growth ratee0
- Direction
- recoverede0
- Comparator
- without MeJA applicatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA application recovered the growth rate”
t0“Highbush Blueberry”
e1“Al–Mn with and without MeJA application”
Claim · model-written summary
Photosynthetic parameters were unaffected in the blueberry treatments.
- Taxon
- Highbush BlueberryVaccinium corymbosumt0
- Outcome
- Photosynthetic parameterse0
- Direction
- not affectede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Photosynthetic parameters were not affected”
t0“Highbush Blueberry”
Claim · model-written summary
Antioxidant activity increased under all treatments versus controls.
- Taxon
- Highbush BlueberryVaccinium corymbosumt0
- Treatment
- all treatmentse0
- Outcome
- Antioxidant activitye0
- Direction
- increasede0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Antioxidant activity increased under all treatments compared with controls”
t0“Highbush Blueberry”
Claim · model-written summary
MeJA-treated blueberry had higher antioxidant activity.
- Taxon
- Highbush BlueberryVaccinium corymbosumt0
- Treatment
- MeJA applicatione0
- Outcome
- Antioxidant activitye1
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“being higher with MeJA application”
e1“Antioxidant activity increased under all treatments compared with controls, being higher with MeJA application”
t0“Highbush Blueberry”
Claim · model-written summary
Al treatment reduced blueberry total phenols by 43% versus controls.
- Taxon
- Highbush BlueberryVaccinium corymbosumt0
- Treatment
- Ale0
- Outcome
- Total phenols (TP)e0
- Direction
- decreasede0
- Value
- 43%e0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total phenols (TP) were decreased in plants under Al (43%) and Mn (20%) compared with controls”
t0“Highbush Blueberry”
Claim · model-written summary
Mn treatment reduced blueberry total phenols by 20% versus controls.
- Taxon
- Highbush BlueberryVaccinium corymbosumt0
- Treatment
- Mne0
- Outcome
- Total phenols (TP)e0
- Direction
- decreasede0
- Value
- 20%e0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total phenols (TP) were decreased in plants under Al (43%) and Mn (20%) compared with controls”
t0“Highbush Blueberry”
Claim · model-written summary
MeJA application increased total phenols across all treatments.
- Taxon
- Highbush BlueberryVaccinium corymbosumt0
- Treatment
- MeJA applicatione0
- Outcome
- TPe0
- Direction
- increasede0
- Comparator
- without MeJA applicatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA application increased TP in all treatments”
t0“Highbush Blueberry”
e1“Al–Mn with and without MeJA application”
Claim · model-written summary
MeJA increased fruit firmness under Al and Mn toxicity.
- Taxon
- Highbush BlueberryVaccinium corymbosumt0
- Treatment
- MeJA applicationse0
- Outcome
- fruit firmnesse0
- Direction
- increasee0
- Qualifier
- under Al and Mn toxicitye0
- Comparator
- without MeJA applicatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruits of bushes under Al and Mn toxicity with MeJA applications exhibited an increase in fruit firmness and weight”
t0“Highbush Blueberry”
e1“Al–Mn with and without MeJA application”
Claim · model-written summary
MeJA increased fruit weight under Al and Mn toxicity.
- Taxon
- Highbush BlueberryVaccinium corymbosumt0
- Treatment
- MeJA applicationse0
- Outcome
- weighte0
- Direction
- increasee0
- Qualifier
- under Al and Mn toxicitye0
- Comparator
- without MeJA applicatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruits of bushes under Al and Mn toxicity with MeJA applications exhibited an increase in fruit firmness and weight”
t0“Highbush Blueberry”
e1“Al–Mn with and without MeJA application”
Claim · model-written summary
MeJA-treated fruit maintained suitable soluble-solids content under Al and Mn toxicity.
- Taxon
- Highbush BlueberryVaccinium corymbosumt0
- Treatment
- MeJA applicationse0
- Outcome
- suitable contents of soluble solidse0
- Qualifier
- under Al and Mn toxicitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruits of bushes under Al and Mn toxicity with MeJA applications exhibited an increase in fruit firmness and weight, maintaining suitable contents of soluble solids”
t0“Highbush Blueberry”
The same questions in other papers
aluminium atom · quality: phytochemicals · Vaccinium corymbosum (highbush blueberry)Results differ
1 in the opposite direction
- positive
manganese atom · growth · Vaccinium corymbosum (highbush blueberry)Positive and negative results
1 in the opposite direction
- positive
(-)-methyl jasmonate · growth · Vaccinium corymbosum (highbush blueberry)Results agree
1 paper in the same direction as this paper
- positive
aluminium atom · growth · Vaccinium corymbosum (highbush blueberry)Results agree
5 papers in the same direction as this paper
- negative
- negative
- negative
2 papers more in this group
See all 6 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.