Abstract
The activity change of defensive enzymes and PR-1a gene expression of tobacco (Nicotiana tabacum) seedling induced by chito-oligosaccharides were studied. The results showed that high level systemic acquired resistance (SAR) was expressed in tobacco plants treated with chito-oligosaccharides solution at the concentration of 50 μg/mL. PAL activity increased greatly with 2 peaks, the activity of SOD decreased initially followed by an increase with higher increment, and the activity of POD peaked early followed by a gentle fall in chito-oligosaccharide treated plants. The PR-1a gene was strongly expressed in tobacco due to systemic acquired resistance induced by chito-oligosaccharides. At 168 h after inoculation the expression quantity (co-pies/2 μL) of PR-1a gene was increased to 2 469.6 in treated tobacco leaf, reached 392.6% than that at 0 h after inoculation,it was increased 3.05 times of that in untreated control.
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Claims 8
Claim · model-written summary
Treatment induced high systemic acquired resistance.
- Taxon
- tobacco
Nicotiana tabacume0 - Treatment
- chito-oligosaccharides solution at the concentration of 50 μg/mLe0
- Outcome
- high level systemic acquired resistance (SAR)e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high level systemic acquired resistance (SAR) was expressed in tobacco plants treated with chito-oligosaccharides solution at the concentration of 50 μg/mL”
Claim · model-written summary
PAL activity increased with two peaks.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- chito-oligosaccharidest0
- Gene
- PALe0
- Outcome
- PAL activitye0
- Direction
- increasede0
- Value
- 2 peakse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PAL activity increased greatly with 2 peaks”
t0“tobacco induced by chito-oligosaccharides”
Claim · model-written summary
SOD activity initially decreased and then increased.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- chito-oligosaccharidest0
- Gene
- SODe0
- Outcome
- activity of SODe0
- Direction
- decreased initially followed by an increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the activity of SOD decreased initially followed by an increase with higher increment”
t0“tobacco induced by chito-oligosaccharides”
Claim · model-written summary
POD activity peaked early then gently declined.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- chito-oligosaccharidee0
- Gene
- PODe0
- Outcome
- activity of PODe0
- Direction
- peaked early followed by a gentle falle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the activity of POD peaked early followed by a gentle fall in chito-oligosaccharide treated plants”
t0“tobacco”
Claim · model-written summary
PR-1a expression was strong after treatment.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- chito-oligosaccharidese0
- Gene
- PR-1ae0
- Outcome
- PR-1a gene was strongly expressede0
- Direction
- strongly expressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The PR-1a gene was strongly expressed in tobacco due to systemic acquired resistance induced by chito-oligosaccharides.”
Claim · model-written summary
At 168 h PR-1a expression reached 2 469.6 copies per 2 μL.
- Taxon
- tobaccoNicotiana tabacume0
- Organ / stage
- leafe0
- Gene
- PR-1ae0
- Outcome
- expression quantity (co-pies/2 μL) of PR-1a genee0
- Direction
- increasede0
- Value
- 2 469.6e0
- Qualifier
- At 168 h after inoculatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 168 h after inoculation the expression quantity (co-pies/2 μL) of PR-1a gene was increased to 2 469.6 in treated tobacco leaf”
Claim · model-written summary
Expression at 168 h was 392.6% of the 0 h level.
- Taxon
- tobaccoNicotiana tabacume0
- Gene
- PR-1ae0
- Outcome
- expression quantitye0
- Direction
- reachede0
- Value
- 392.6%e0
- Comparator
- 0 h after inoculatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the expression quantity (co-pies/2 μL) of PR-1a gene was increased to 2 469.6 in treated tobacco leaf, reached 392.6% than that at 0 h after inoculation”
Claim · model-written summary
PR-1a expression was 3.05 times untreated control.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- chito-oligosaccharidest0
- Gene
- PR-1at0
- Outcome
- PR-1a gene expressiont0
- Direction
- increasede0
- Value
- 3.05 timese0
- Comparator
- untreated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it was increased 3.05 times of that in untreated control”
t0“PR-1a gene expression of tobacco induced by chito-oligosaccharides”
The same questions in other papers
chitooligosaccharide · disease · Nicotiana tabacum (tobacco)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.