Abstract
Bioactivity and stability of purified 90 kD extracellular elicitor protein from Phytophthora boehmeriae were studied. The elicitor could induce hypersensitive responses (HR) on tobacco leaves at different doses ranging from 0.5 nmol/L to 100 nmol/L but not at 100 pmol/L, which indicated that the minimal efficient dosage of inducing HR on tobacco was between 100 pmol/L and 0.5 nmol/L. The elicitor could also induce HR on other cultivars of Nicotiana tabacum butnotonotherSolanaceae (eggplant and pepper)oroncotton( Gossypium arboreum ), which suggested that this 90 kD elicitor was host-specific. When the 90 kD elicitor was infiltrated into the tobacco leaves, it could induce the systemic acquired resistance (10%~68%) to P. nicotianae that was inoculated on the tobacco stem. The highest level of induced resistance was acquired when tobacco stems were inoculated immediately after its leaves being treated with elicitor at different pH (pH2 pH14) for 30 minutes or at different temperature (4℃, 25℃, 60℃, 100℃) for 5 minutes, the elicitor could maintain its activity of inducing HR. However,the treatment with proteinase K could cause the loss of its ability of inducing HR in tobacco. Results showed that the elicitor was not sensitive to acid, alkali or temperature, but was sensitive to proteinase K.
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Claims 6
Claim · model-written summary
The 90 kD elicitor induced HR on tobacco leaves at 0.5 to 100 nmol/L but not at 100 pmol/L.
- Taxon
- tobacco
Nicotiana tabacume2 - Organ / stage
- leavese2
- Treatment
- elicitore2
- Interactor
- Phytophthora boehmeriaePhytophthora boehmeriaee1pathogen
- Outcome
- hypersensitive responses (HR)e2
- Direction
- inducee2
- Comparator
- 100 pmol/Le2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Bioactivity and stability of purified 90 kD extracellular elicitor protein from Phytophthora boehmeriae were studied”
e2“The elicitor could induce hypersensitive responses (HR) on tobacco leaves at different doses ranging from 0.5 nmol/L to 100 nmol/L but not at 100 pmol/L”
Claim · model-written summary
The elicitor induced HR on other Nicotiana tabacum cultivars but not on eggplant, pepper or cotton, suggesting host specificity.
- Taxon
- Nicotiana tabacumNicotiana tabacume3
- Treatment
- elicitore3
- Outcome
- HRe3
- Direction
- inducee3
- Comparator
- eggplant and peppere3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Bioactivity and stability of purified 90 kD extracellular elicitor protein from Phytophthora boehmeriae were studied”
e3“The elicitor could also induce HR on other cultivars of Nicotiana tabacum butnotonotherSolanaceae (eggplant and pepper)oroncotton( Gossypium arboreum )”
Claim · model-written summary
Infiltrating the 90 kD elicitor into tobacco leaves induced systemic acquired resistance of 10%-68% against P. nicotianae inoculated on the stem.
- Taxon
- tobaccoNicotiana tabacume4
- Organ / stage
- steme4
- Treatment
- 90 kD elicitore4
- Interactor
- P. nicotianae
Phytophthora nicotianaee4pathogen - Outcome
- systemic acquired resistancee4
- Direction
- inducee4
- Value
- 10%~68%e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Bioactivity and stability of purified 90 kD extracellular elicitor protein from Phytophthora boehmeriae were studied”
e4“When the 90 kD elicitor was infiltrated into the tobacco leaves, it could induce the systemic acquired resistance (10%~68%) to P. nicotianae that was inoculated on the tobacco stem”
Claim · model-written summary
Tobacco stems inoculated immediately after leaf treatment with the elicitor showed the highest induced resistance.
- Taxon
- tobaccoNicotiana tabacume5
- Treatment
- treated with elicitore5
- Outcome
- induced resistancee5
- Direction
- higheste5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“The highest level of induced resistance was acquired when tobacco stems were inoculated immediately after its leaves being treated with elicitor”
Claim · model-written summary
The elicitor kept its ability to induce HR after treatment at pH 2 to 14 for 30 minutes or at 4 to 100 °C for 5 minutes.
- Taxon
- tobaccoNicotiana tabacume5
- Treatment
- at different pH (pH2 pH14) for 30 minutes or at different temperature (4℃, 25℃, 60℃, 100℃) for 5 minutese6
- Outcome
- activity of inducing HRe6
- Direction
- maintaine6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“The highest level of induced resistance was acquired when tobacco stems were inoculated immediately after its leaves being treated with elicitor”
e6“at different pH (pH2 pH14) for 30 minutes or at different temperature (4℃, 25℃, 60℃, 100℃) for 5 minutes, the elicitor could maintain its activity of inducing HR”
Claim · model-written summary
Proteinase K caused the elicitor to lose its ability to induce HR in tobacco.
- Taxon
- tobaccoNicotiana tabacume7
- Treatment
- proteinase Ke7
- Outcome
- ability of inducing HRe7
- Direction
- losse7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“However,the treatment with proteinase K could cause the loss of its ability of inducing HR in tobacco”
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See all 13 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.