Abstract
The rice plants treated with pulp-masses containing ethrel at more than 30ppm by spotting on leaves showed symptoms quite similar to the stunting of blast diseased plants, i.e., shortened new leaf blades and sheaths that emerged after infection, hastened leaf emergence period and epinasty of infected leaves. The ethylene evolution in susceptible cultivar inoculated with the blast fungus occurred immediately after infection and increased considerably toward eleventh day reaching the maximum level of 2.7nl/g/h, but decreased rapidly thereafter. Stunting of the plants was also induced as early as the latent period, becoming more conspicuous with disease development. In resistant cultivar the temporal evolution could be detected only two days after inoculation, resulting in no stunting. The leaves bearing acute type lesions with waterly greenish grey color produced much more ethylene than those with chronic type lesions with grey center and brown margin. There was no significant difference in the amounts of ethylene during the first 14 days that required for 1% inhibition of plant growth between the infected and the ethrel-treated plants. These facts suggest that ethylene may be a major factor for stunting of blast infected rice plants.
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Claims 8
Claim · model-written summary
Ethrel above 30 ppm caused blast-like stunting symptoms, including shortened new leaves, hastened emergence and epinasty.
- Taxon
- Rice Plants
Oryza sativat0 - Organ / stage
- leavese0
- Treatment
- pulp-masses containing ethrel at more than 30ppme0
- Outcome
- shortened new leaf blades and sheaths that emerged after infection, hastened leaf emergence period and epinasty of infected leavese0
- Comparator
- blast diseased plantse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plants”
e0“The rice plants treated with pulp-masses containing ethrel at more than 30ppm by spotting on leaves showed symptoms quite similar to the stunting of blast diseased plants, i.e., shortened new leaf blades and sheaths that emerged after infection, hastened leaf emergence period and epinasty of infected leaves.”
Claim · model-written summary
Blast infection in susceptible rice led to ethylene evolution that increased to a day-eleven maximum of 2.7nl/g/h before declining.
- Taxon
- Rice PlantsOryza sativat0
- Material
- susceptible cultivare0
- Interactor
- blast funguse0pathogen
- Outcome
- ethylene evolutione0
- Direction
- increased considerablye0
- Value
- 2.7nl/g/he0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plants”
e0“The ethylene evolution in susceptible cultivar inoculated with the blast fungus occurred immediately after infection and increased considerably toward eleventh day reaching the maximum level of 2.7nl/g/h, but decreased rapidly thereafter.”
Claim · model-written summary
Stunting appeared by the latent period and became more conspicuous as disease developed.
- Taxon
- Rice PlantsOryza sativat0
- Outcome
- Stunting of the plantse0
- Direction
- more conspicuouse0
- Qualifier
- as early as the latent periode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plants”
e0“Stunting of the plants was also induced as early as the latent period, becoming more conspicuous with disease development.”
Claim · model-written summary
Resistant rice showed ethylene evolution only two days after inoculation and no stunting.
- Taxon
- Rice PlantsOryza sativat0
- Material
- resistant cultivare0
- Outcome
- temporal evolutione0
- Qualifier
- only two days after inoculatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plants”
e0“In resistant cultivar the temporal evolution could be detected only two days after inoculation, resulting in no stunting.”
Claim · model-written summary
Resistant rice did not stunt after inoculation.
- Taxon
- Rice PlantsOryza sativat0
- Material
- resistant cultivare0
- Outcome
- no stuntinge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plants”
e0“In resistant cultivar the temporal evolution could be detected only two days after inoculation, resulting in no stunting.”
Claim · model-written summary
Leaves with acute lesions produced more ethylene than leaves with chronic lesions.
- Taxon
- Rice PlantsOryza sativat0
- Organ / stage
- leavese0
- Outcome
- ethylenee0
- Direction
- much moree0
- Comparator
- those with chronic type lesions with grey center and brown margine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plants”
e0“The leaves bearing acute type lesions with waterly greenish grey color produced much more ethylene than those with chronic type lesions with grey center and brown margin.”
Claim · model-written summary
The ethylene amounts associated with 1% growth inhibition did not differ significantly between infected and ethrel-treated plants over 14 days.
- Taxon
- Rice PlantsOryza sativat0
- Outcome
- amounts of ethylenee0
- Direction
- no significant differencee0
- Value
- 1%e0
- Comparator
- the ethrel-treated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plants”
e0“There was no significant difference in the amounts of ethylene during the first 14 days that required for 1% inhibition of plant growth between the infected and the ethrel-treated plants.”
Claim · model-written summary
The authors suggest ethylene may be a major cause of stunting in blast-infected rice.
- Taxon
- Rice PlantsOryza sativat0
- Interactor
- blaste0pathogen
- Compound
- ethylenee0
- Outcome
- stunting of blast infected rice plantse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plants”
e0“These facts suggest that ethylene may be a major factor for stunting of blast infected rice plants.”
The same questions in other papers
(2-chloroethyl)phosphonic acid · disease · Oryza sativa (rice)Positive and negative results
2 papers in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
3 papers more in this group
See all 7 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.