Abstract
Systemic acquired resistance (SAR) is an important component of disease-resistance arsenal of plants, and is associated with enhanced potency of activating local and systemic defense-related responses upon pathogen attack. In this report, we demonstrated that pre-treatment with beta-aminobutyric acid (BABA), a new elicitor of SAR in the plants, enhanced resistance against tobacco mosaic virus (TMV) in a temperately-sensitive tobacco (Nicotiana tabacum L.) cultivar Yunyan 85. The resistance is based on the elicitation of defense-related responses induced by BABA that brings the TMV-susceptible tobacco plants to a defense-ready state, even before exposure to the pathogen. The induced resistance was strongly associated with potentiated activation of defense-related enzymes [phenylalanine ammonia lyase (PAL) and polyphenol oxidase (PPO)] activities, proportional to the concentration of the BABA sprayed. Interestingly, simultaneous clipping, an important agricultural practice in tobacco production, attenuated BABA-mediated enhancement of TMV resistance in tobacco. The changes in the defense-related enzymes activities indicated that the interaction between BABA and wounding was reciprocally antagonistic. Moreover, such a negative interaction regulated the expression of defense-related enzymes. depending on the time of induction.
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Claims 6
Claim · model-written summary
BABA pretreatment enhanced resistance to TMV in Yunyan 85 tobacco.
- Taxon
- tobacco
Nicotiana tabacume0 - Material
- Yunyan 85e0
- Treatment
- pre-treatment with beta-aminobutyric acid (BABA)e0
- Interactor
- tobacco mosaic virus (TMV)
Tobacco mosaic viruse0pathogen - Outcome
- resistance against tobacco mosaic virus (TMV)e0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pre-treatment with beta-aminobutyric acid (BABA), a new elicitor of SAR in the plants, enhanced resistance against tobacco mosaic virus (TMV) in a temperately-sensitive tobacco (Nicotiana tabacum L.) cultivar Yunyan 85”
Claim · model-written summary
BABA elicited defense responses before pathogen exposure.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- BABAe0
- Interactor
- TMVTobacco mosaic viruse0pathogen
- Outcome
- defense-ready statee0
- Qualifier
- even before exposure to the pathogene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The resistance is based on the elicitation of defense-related responses induced by BABA that brings the TMV-susceptible tobacco plants to a defense-ready state, even before exposure to the pathogen”
Claim · model-written summary
BABA concentration was associated with potentiated PAL and PPO activities.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- BABA sprayede0
- Gene
- phenylalanine ammonia lyase (PAL) and polyphenol oxidase (PPO)e0
- Outcome
- defense-related enzymes [phenylalanine ammonia lyase (PAL) and polyphenol oxidase (PPO)] activitiese0
- Direction
- potentiatede0
- Qualifier
- proportional to the concentration of the BABA sprayede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The induced resistance was strongly associated with potentiated activation of defense-related enzymes [phenylalanine ammonia lyase (PAL) and polyphenol oxidase (PPO)] activities, proportional to the concentration of the BABA sprayed”
t0“resistance in tobacco”
Claim · model-written summary
Simultaneous clipping attenuated BABA-mediated TMV resistance in tobacco.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- simultaneous clippinge0
- Interactor
- TMVTobacco mosaic viruse0pathogen
- Outcome
- BABA-mediated enhancement of TMV resistancee0
- Direction
- attenuatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“simultaneous clipping, an important agricultural practice in tobacco production, attenuated BABA-mediated enhancement of TMV resistance in tobacco”
Claim · model-written summary
BABA and wounding had reciprocally antagonistic effects on defense-related enzyme activity.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- BABA and woundinge0
- Outcome
- defense-related enzymes activitiese0
- Direction
- reciprocally antagonistice0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The changes in the defense-related enzymes activities indicated that the interaction between BABA and wounding was reciprocally antagonistic”
t0“resistance in tobacco”
Claim · model-written summary
The negative interaction of BABA and wounding regulated defense enzyme expression according to induction time.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- BABA and woundinge1
- Outcome
- expression of defense-related enzymese0
- Qualifier
- depending on the time of inductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“such a negative interaction regulated the expression of defense-related enzymes. depending on the time of induction”
e1“interaction between BABA and wounding”
t0“resistance in tobacco”
The same questions in other papers
3-aminobutanoic acid · Tobacco mosaic virus · Nicotiana tabacum (tobacco)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
1 paper more in this group
See all 5 papers →mechanical · Tobacco mosaic virus · Nicotiana tabacum (tobacco)Positive and negative results
4 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
2 papers more in this group
See all 6 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.