Abstract
Ethylene has been thought to be an important factor for the induction of defense responses against pathogen attack, but its function in these responses has not been well defined. Here we show the direct involvement of ethylene in the formation of necrotic lesions and in basic pathogenesis-related (PR) protein gene induction in tobacco. Increase in ethylene production as well as accumulation of 1-aminocyclopropane-1-carboxylic acid oxidase (ACO) gene transcript obviously preceded the lesion appearance in tobacco mosaic virus (TMV)-infected leaves in an N gene-dependent synchronous lesion formation system. Inhibitors of ethylene biosynthesis or action significantly suppressed both lesion formation and basic PR gene expression. Induction of these genes was enhanced in 1-aminocyclopropane-1-carboxylic acid (ACC)-treated leaves especially in ACO-overexpressing transgenic tobacco plants. Further, we found that ethylene production during hypersensitive reaction is restricted at the level of ACO activity.
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Claims 6
Claim · model-written summary
Ethylene production rose before lesions appeared in TMV-infected tobacco leaves.
- Taxon
- tobacco
Nicotiana tabacume0 - Organ / stage
- leavese0
- Interactor
- tobacco mosaic virus
Tobacco mosaic viruse0pathogen - Outcome
- ethylene productione0
- Direction
- Increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase in ethylene production as well as accumulation of 1-aminocyclopropane-1-carboxylic acid oxidase (ACO) gene transcript obviously preceded the lesion appearance in tobacco mosaic virus (TMV)-infected leaves”
Claim · model-written summary
ACO transcript accumulated before lesions appeared in infected tobacco leaves.
- Taxon
- tobaccoNicotiana tabacume0
- Interactor
- tobacco mosaic virusTobacco mosaic viruse0pathogen
- Gene
- 1-aminocyclopropane-1-carboxylic acid oxidase (ACO)e0
- Outcome
- gene transcripte0
- Direction
- accumulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“accumulation of 1-aminocyclopropane-1-carboxylic acid oxidase (ACO) gene transcript obviously preceded the lesion appearance in tobacco mosaic virus (TMV)-infected leaves”
Claim · model-written summary
Ethylene biosynthesis or action inhibitors significantly suppressed lesion formation.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- Inhibitors of ethylene biosynthesis or actione0
- Outcome
- lesion formatione0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inhibitors of ethylene biosynthesis or action significantly suppressed both lesion formation and basic PR gene expression.”
t0“Tobacco”
Claim · model-written summary
Ethylene biosynthesis or action inhibitors significantly suppressed basic PR gene expression.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- Inhibitors of ethylene biosynthesis or actione0
- Gene
- PRe0
- Outcome
- basic PR gene expressione0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inhibitors of ethylene biosynthesis or action significantly suppressed both lesion formation and basic PR gene expression.”
t0“Tobacco”
Claim · model-written summary
ACC treatment enhanced PR gene induction, especially in ACO-overexpressing tobacco.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- 1-aminocyclopropane-1-carboxylic acid (ACC)-treatede0
- Gene
- ACOe0
- Outcome
- Induction of these genese0
- Direction
- enhancede0
- Qualifier
- especially in ACO-overexpressing transgenic tobacco plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Induction of these genes was enhanced in 1-aminocyclopropane-1-carboxylic acid (ACC)-treated leaves especially in ACO-overexpressing transgenic tobacco plants.”
Claim · model-written summary
Ethylene production during the hypersensitive reaction was restricted at ACO activity.
- Taxon
- tobaccoNicotiana tabacumt0
- Gene
- ACOe0
- Outcome
- ethylene productione0
- Qualifier
- hypersensitive reactione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ethylene production during hypersensitive reaction is restricted at the level of ACO activity”
t0“Tobacco”
The same questions in other papers
ethene · disease · Nicotiana tabacum (tobacco)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
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ethene · molecular: expression · Nicotiana tabacum (tobacco)Positive and negative results
7 papers in the same direction as this paper · 7 in the opposite direction
- positive
- positive
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11 papers more in this group
See all 15 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.