Abstract
Abstract To learn how salicylic acid (SA) may affect disease resistance in mango, mango fruit ( Mangifera indica L. cv. ‘Matisu’) were treated with 1 mmol L −1 SA solution under vacuum infiltration for 2 min at a low pressure (−80 kPa) and for an additional 10 min at air pressure. The fruit were inoculated with anthracnose ( Colletotichum gloeosporioides Penz.) spore suspension (1 × 10 4 CFU mL −1 ) and incubated at 13 °C, 85–95% RH. Disease incidence and lesion diameter in/on the SA‐treated fruit were 37.5% and 20.9% lower than that in/on control fruit on the 4th day of incubation. The study further showed that activities of defensive enzymes in the fruit were significantly enhanced by SA treatment. The activity of phenylalanine ammonia‐lyase (PAL) and β‐1,3‐glucanase in the SA‐treated fruit was over 6‐ or 0.9‐fold higher than that in control fruit on the 4th day after the fruit being treated with SA, respectively. Level of hydrogen peroxide (H 2 O 2 ) or superoxide radicals (O 2 − ) generation rate in SA‐treated fruit was 22.3% or 79.4% higher than that in controls on the 8th day after the fruit being treated with SA, respectively. These results suggested that PAL and β‐1,3‐glucanase, as well as H 2 O 2 or O 2 − , may be involved in the enhancement of disease resistance in mango fruit. Copyright © 2006 Society of Chemical Industry
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Claims 8
Claim · model-written summary
Salicylic acid lowered disease incidence by 37.5% on day four.
- Taxon
- mango
_from_India.jpg?width=60)
Mangifera indicat0 - Treatment
- SA‐treated fruite0
- Interactor
- Colletotichum gloeosporioides Penz.e1pathogen
- Outcome
- Disease incidencee0
- Direction
- lowere0
- Value
- 37.5%e0
- Qualifier
- 4th day of incubatione0
- Comparator
- control fruite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_from_India.jpg?width=500)
Verbatim
e0“Disease incidence and lesion diameter in/on the SA‐treated fruit were 37.5% and 20.9% lower than that in/on control fruit on the 4th day of incubation.”
t0“mango”
e1“anthracnose ( Colletotichum gloeosporioides Penz.) spore suspension”
Claim · model-written summary
Salicylic acid lowered lesion diameter by 20.9% on day four.
- Taxon
- mangoMangifera indicat0
- Treatment
- SA‐treated fruite0
- Interactor
- Colletotichum gloeosporioides Penz.e1pathogen
- Outcome
- lesion diametere0
- Direction
- lowere0
- Value
- 20.9%e0
- Comparator
- control fruite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Disease incidence and lesion diameter in/on the SA‐treated fruit were 37.5% and 20.9% lower than that in/on control fruit on the 4th day of incubation.”
t0“mango”
e1“anthracnose ( Colletotichum gloeosporioides Penz.) spore suspension”
Claim · model-written summary
Salicylic acid enhanced defensive enzyme activities.
- Taxon
- mangoMangifera indicat0
- Treatment
- SA treatmente0
- Outcome
- activities of defensive enzymese0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“activities of defensive enzymes in the fruit were significantly enhanced by SA treatment.”
t0“mango”
Claim · model-written summary
PAL activity was over sixfold higher after treatment.
- Taxon
- mangoMangifera indicat0
- Treatment
- SA‐treated fruite0
- Gene
- phenylalanine ammonia‐lyase (PAL)e0
- Outcome
- activity of phenylalanine ammonia‐lyase (PAL)e0
- Direction
- highere0
- Value
- over 6‐e0
- Comparator
- control fruite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activity of phenylalanine ammonia‐lyase (PAL) and β‐1,3‐glucanase in the SA‐treated fruit was over 6‐ or 0.9‐fold higher than that in control fruit on the 4th day after the fruit being treated with SA, respectively.”
t0“mango”
Claim · model-written summary
Beta-1,3-glucanase activity was 0.9-fold higher after treatment.
- Taxon
- mangoMangifera indicat0
- Treatment
- SA‐treated fruite0
- Gene
- β‐1,3‐glucanasee0
- Outcome
- β‐1,3‐glucanasee0
- Direction
- highere0
- Value
- 0.9‐folde0
- Comparator
- control fruite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activity of phenylalanine ammonia‐lyase (PAL) and β‐1,3‐glucanase in the SA‐treated fruit was over 6‐ or 0.9‐fold higher than that in control fruit on the 4th day after the fruit being treated with SA, respectively.”
t0“mango”
Claim · model-written summary
Hydrogen peroxide level was 22.3% higher on day eight.
- Taxon
- mangoMangifera indicat0
- Treatment
- SA‐treated fruite0
- Outcome
- Level of hydrogen peroxide (H 2 O 2 )e0
- Direction
- highere0
- Value
- 22.3%e0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Level of hydrogen peroxide (H 2 O 2 ) or superoxide radicals (O 2 − ) generation rate in SA‐treated fruit was 22.3% or 79.4% higher than that in controls on the 8th day after the fruit being treated with SA, respectively.”
t0“mango”
Claim · model-written summary
Superoxide generation was 79.4% higher on day eight.
- Taxon
- mangoMangifera indicat0
- Treatment
- SA‐treated fruite0
- Outcome
- superoxide radicals (O 2 − ) generation ratee0
- Direction
- highere0
- Value
- 79.4%e0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Level of hydrogen peroxide (H 2 O 2 ) or superoxide radicals (O 2 − ) generation rate in SA‐treated fruit was 22.3% or 79.4% higher than that in controls on the 8th day after the fruit being treated with SA, respectively.”
t0“mango”
Claim · model-written summary
The authors propose PAL, glucanase and reactive oxygen species contribute to resistance.
- Taxon
- mangoMangifera indicae0
- Gene
- PAL and β‐1,3‐glucanasee0
- Compound
- H 2 O 2 or O 2 −e0
- Outcome
- enhancement of disease resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PAL and β‐1,3‐glucanase, as well as H 2 O 2 or O 2 − , may be involved in the enhancement of disease resistance in mango fruit.”
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