Abstract
Abstract The plant resistance activator acibenzolar‐ S ‐methyl (BTH), the signalling molecules salicylic acid (SA) and methyl jasmonate (MeJA) were tested by seed treatment for their ability to protect melon seedlings from gummy stem blight and white mould disease caused by the soil‐borne fungal pathogens Didymella bryoniae and Sclerotinia sclerotiorum , respectively. Didymella bryoniae infection on melon seedlings was completely suppressed by MeJA treatment. Necrotic lesions akin hypersensitive response occurred on all inoculated seedlings and prevented pathogen diffusion into healthy tissues. Didymella bryoniae infection was restricted following BTH seed treatment as well, although the percentage of necrotic lesions in comparison with the water soaked lesions was significantly lower than that from MeJA‐induced seedlings. BTH protected melon seedlings against S. sclerotiorum by the occurrence of a high percentage of necrotic lesions. A lower level of resistance was also achieved by MeJA seed treatment. The augmented level of resistance of tissues from BTH and MeJA‐treated seeds was associated with rapid increases in the activity of the pathogenesis‐related proteins chitinase and peroxidase. MeJA also determined a rapid and transient accumulation of lipoxygenase. Moreover, BTH and MeJA treatments determined the differential induction of particular de novo synthesized isoenzymes of these proteins. Results indicate that BTH and MeJA applied to melon seeds may activate on seedlings diverse metabolic pathways leading to the enhancement of resistance against distinct pathogens.
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Claims 9
Claim · model-written summary
MeJA completely suppressed Didymella bryoniae infection on melon seedlings.
- Taxon
- melon
.jpg?width=60)
Cucumis meloe0 - Treatment
- MeJA treatmente0
- Interactor
- Didymella bryoniae
Stagonosporopsis cucurbitacearume0pathogen - Outcome
- Didymella bryoniae infectione0
- Direction
- completely suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Didymella bryoniae infection on melon seedlings was completely suppressed by MeJA treatment”
Claim · model-written summary
Necrotic lesions occurred on all inoculated seedlings and prevented pathogen spread.
- Taxon
- MelonCucumis melot0
- Outcome
- Necrotic lesions akin hypersensitive responsee0
- Qualifier
- all inoculated seedlingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Necrotic lesions akin hypersensitive response occurred on all inoculated seedlings and prevented pathogen diffusion into healthy tissues”
t0“Melon”
Claim · model-written summary
BTH seed treatment restricted Didymella bryoniae infection.
- Taxon
- MelonCucumis melot0
- Treatment
- BTH seed treatmente0
- Interactor
- Didymella bryoniaeStagonosporopsis cucurbitacearume0pathogen
- Outcome
- Didymella bryoniae infectione0
- Direction
- restrictede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Didymella bryoniae infection was restricted following BTH seed treatment as well”
t0“Melon”
Claim · model-written summary
BTH induced a significantly lower proportion of necrotic lesions than MeJA.
- Taxon
- MelonCucumis melot0
- Treatment
- BTH seed treatmente1
- Outcome
- percentage of necrotic lesionse0
- Direction
- lowere0
- Comparator
- MeJA‐induced seedlingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the percentage of necrotic lesions in comparison with the water soaked lesions was significantly lower than that from MeJA‐induced seedlings”
e1“BTH seed treatment”
t0“Melon”
Claim · model-written summary
BTH protected melon seedlings against S. sclerotiorum with a high proportion of necrotic lesions.
- Taxon
- melonCucumis meloe0
- Treatment
- BTHe0
- Interactor
- S. sclerotiorum
Sclerotinia sclerotiorume0pathogen - Outcome
- protected melon seedlings against S. sclerotiorume0
- Direction
- protectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BTH protected melon seedlings against S. sclerotiorum by the occurrence of a high percentage of necrotic lesions”
Claim · model-written summary
MeJA seed treatment gave a lower level of resistance against S. sclerotiorum.
- Taxon
- MelonCucumis melot0
- Treatment
- MeJA seed treatmente0
- Interactor
- S. sclerotiorumSclerotinia sclerotiorume1pathogen
- Outcome
- resistancee0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A lower level of resistance was also achieved by MeJA seed treatment”
e1“S. sclerotiorum”
t0“Melon”
Claim · model-written summary
BTH and MeJA resistance was associated with rapid chitinase and peroxidase activity increases.
- Taxon
- MelonCucumis melot0
- Treatment
- BTH and MeJA‐treated seedse0
- Gene
- chitinase and peroxidasee0
- Outcome
- augmented level of resistancee0
- Direction
- rapid increasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The augmented level of resistance of tissues from BTH and MeJA‐treated seeds was associated with rapid increases in the activity of the pathogenesis‐related proteins chitinase and peroxidase”
t0“Melon”
Claim · model-written summary
MeJA caused rapid transient lipoxygenase accumulation.
- Taxon
- MelonCucumis melot0
- Treatment
- MeJAe0
- Gene
- lipoxygenasee0
- Outcome
- accumulation of lipoxygenasee0
- Direction
- accumulatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA also determined a rapid and transient accumulation of lipoxygenase”
t0“Melon”
Claim · model-written summary
BTH and MeJA differentially induced newly synthesized isoenzymes.
- Taxon
- MelonCucumis melot0
- Treatment
- BTH and MeJA treatmentse0
- Outcome
- differential induction of particular de novo synthesized isoenzymese0
- Direction
- inductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BTH and MeJA treatments determined the differential induction of particular de novo synthesized isoenzymes of these proteins”
t0“Melon”
The same questions in other papers
acibenzolar-S-methyl · disease · Cucumis melo (muskmelon)Positive and negative results
1 paper in the same direction as this paper · 10 in the opposite direction
- positive
- no effect
- positive
8 papers more in this group
See all 12 papers →(-)-methyl jasmonate · Stagonosporopsis cucurbitacearum · Cucumis melo (muskmelon)Results agree
1 paper in the same direction as this paper
- positive
seed treatment · disease · Cucumis melo (muskmelon)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- 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.