Abstract
Abiotic stresses cause extensive losses to agricultural production worldwide. Acclimation of plants to abiotic conditions such as drought, salinity, or heat is mediated by a complex network of transcription factors and other regulatory genes that control multiple defense enzymes, proteins, and pathways. Associated with the activity of different transcription factors are transcriptional coactivators that enhance their binding to the basal transcription machinery. Although the importance of stress-response transcription factors was demonstrated in transgenic plants, little is known about the function of transcriptional coactivators associated with abiotic stresses. Here, we report that constitutive expression of the stress-response transcriptional coactivator multiprotein bridging factor 1c (MBF1c) in Arabidopsis (Arabidopsis thaliana) enhances the tolerance of transgenic plants to bacterial infection, heat, and osmotic stress. Moreover, the enhanced tolerance of transgenic plants to osmotic and heat stress was maintained even when these two stresses were combined. The expression of MBF1c in transgenic plants augmented the accumulation of a number of defense transcripts in response to heat stress. Transcriptome profiling and inhibitor studies suggest that MBF1c expression enhances the tolerance of transgenic plants to heat and osmotic stress by partially activating, or perturbing, the ethylene-response signal transduction pathway. Present findings suggest that MBF1 proteins could be used to enhance the tolerance of plants to different abiotic stresses.
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Claims 7
Claim · model-written summary
Constitutive MBF1c expression enhanced Arabidopsis tolerance to bacterial infection.
- Taxon
- Arabidopsis
Arabidopsise0 - Treatment
- constitutive expressione0
- Gene
- multiprotein bridging factor 1c (MBF1c)e0
- Outcome
- tolerance of transgenic plants to bacterial infectione0
- Direction
- enhancese0
Not reportedInteractorComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“constitutive expression of the stress-response transcriptional coactivator multiprotein bridging factor 1c (MBF1c) in Arabidopsis (Arabidopsis thaliana) enhances the tolerance of transgenic plants to bacterial infection, heat, and osmotic stress.”
Claim · model-written summary
Constitutive MBF1c expression enhanced Arabidopsis heat tolerance.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- constitutive expressione0
- Gene
- multiprotein bridging factor 1c (MBF1c)e0
- Outcome
- tolerance of transgenic plants to bacterial infection, heat, and osmotic stresse0
- Direction
- enhancese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Schema note from the model: Outcome quote lists multiple stresses; statement isolates heat.
Verbatim
e0“constitutive expression of the stress-response transcriptional coactivator multiprotein bridging factor 1c (MBF1c) in Arabidopsis (Arabidopsis thaliana) enhances the tolerance of transgenic plants to bacterial infection, heat, and osmotic stress.”
Claim · model-written summary
Constitutive MBF1c expression enhanced Arabidopsis osmotic-stress tolerance.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- constitutive expressione0
- Gene
- MBF1ce0
- Outcome
- tolerance of transgenic plants to bacterial infection, heat, and osmotic stresse0
- Direction
- enhancese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Schema note from the model: Outcome quote lists multiple stresses; statement isolates osmotic stress.
Verbatim
e0“constitutive expression of the stress-response transcriptional coactivator multiprotein bridging factor 1c (MBF1c) in Arabidopsis (Arabidopsis thaliana) enhances the tolerance of transgenic plants to bacterial infection, heat, and osmotic stress.”
Claim · model-written summary
Enhanced tolerance persisted when heat and osmotic stress were combined.
- Taxon
- ArabidopsisArabidopsist0
- Outcome
- enhanced tolerance of transgenic plants to osmotic and heat stresse0
- Direction
- maintainede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the enhanced tolerance of transgenic plants to osmotic and heat stress was maintained even when these two stresses were combined.”
t0“Arabidopsis (Arabidopsis thaliana)”
Claim · model-written summary
MBF1c expression augmented defense transcript accumulation under heat stress.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- expression of MBF1ce0
- Gene
- MBF1ce0
- Outcome
- accumulation of a number of defense transcriptse0
- Direction
- augmentede0
- Qualifier
- in response to heat stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The expression of MBF1c in transgenic plants augmented the accumulation of a number of defense transcripts in response to heat stress.”
t0“Arabidopsis (Arabidopsis thaliana)”
Claim · model-written summary
MBF1c expression may enhance heat and osmotic tolerance by perturbing ethylene response signaling.
- Taxon
- ArabidopsisArabidopsist0
- Gene
- MBF1ce0
- Outcome
- tolerance of transgenic plants to heat and osmotic stresse0
- Qualifier
- partially activating, or perturbing, the ethylene-response signal transduction pathwaye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MBF1c expression enhances the tolerance of transgenic plants to heat and osmotic stress by partially activating, or perturbing, the ethylene-response signal transduction pathway.”
t0“Arabidopsis (Arabidopsis thaliana)”
Claim · model-written summary
The authors suggest MBF1 proteins could improve plant abiotic-stress tolerance.
- Taxon
- plantsViridiplantaee0
- Gene
- MBF1 proteinse0
- Outcome
- enhance the tolerance of plants to different abiotic stressese0
Verbatim
e0“MBF1 proteins could be used to enhance the tolerance of plants to different abiotic stresses.”
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See all 66 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.