Abstract
Temperature variations at the nonextreme range modulate various processes of plant growth, development, and physiology, but how plants perceive and transduce these temperature signals is not well understood. Moderate cooling from 28 °C to 22 °C induces transcription of a number of genes in salicylic acid-dependent and -independent manners. Here, we report the study of the transcriptional control of the BON1-associated protein1 (BAP1) gene that is responsive to a moderate decrease of temperature as well as to many environmental stimuli. Using reporter genes under the control of series of regions of the BAP1 promoter, we identified a 35-bp fragment that is necessary and sufficient for the BAP1 transcript induction by a moderate cooling. This fragment also confers an induction of BAP1 by cold and reactive oxygen species-generating paraquat. Furthermore, the inducer of CBF expression1 (ICE1) protein that is involved in transcriptional control of cold responses is found to bind to a MYC element in this promoter and is required for the cooling induction of BAP1. The ice1 mutant has a low induction of BAP1 and enhanced resistance to a bacterial pathogen. Thus, responses to a moderate decrease in temperature may utilize components in the cold response as well as a potentiating signaling involving salicylic acid.
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Claims 6
Claim · model-written summary
A 35-bp BAP1 promoter fragment is necessary and sufficient for BAP1 transcript induction by moderate cooling.
- Taxon
- Arabidopsis
Arabidopsist0 - Treatment
- moderate coolinge3
- Gene
- BAP1e3
- Outcome
- BAP1 transcript inductione3
- Direction
- increaseinferrede3
- Qualifier
- necessary and sufficiente3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Arabidopsis”
e3“we identified a 35-bp fragment that is necessary and sufficient for the BAP1 transcript induction by a moderate cooling”
Claim · model-written summary
A fragment of the BAP1 promoter also confers BAP1 induction by cold and by the reactive oxygen species-generating paraquat.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- cold and reactive oxygen species-generating paraquate4
- Gene
- BAP1e4
- Outcome
- induction of BAP1e4
- Direction
- increaseinferrede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Arabidopsis”
e4“This fragment also confers an induction of BAP1 by cold and reactive oxygen species-generating paraquat”
Claim · model-written summary
ICE1 binds a MYC element in the BAP1 promoter and is required for the cooling induction of BAP1.
- Taxon
- ArabidopsisArabidopsist0
- Gene
- ICE1e5
- Outcome
- cooling induction of BAP1e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Arabidopsis”
e5“the inducer of CBF expression1 (ICE1) protein that is involved in transcriptional control of cold responses is found to bind to a MYC element in this promoter and is required for the cooling induction of BAP1”
Claim · model-written summary
The ice1 mutant shows a low induction of BAP1.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- ice1 mutante6
- Gene
- ice1e6
- Outcome
- induction of BAP1e6
- Direction
- lowe6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Arabidopsis”
e6“The ice1 mutant has a low induction of BAP1 and enhanced resistance to a bacterial pathogen”
Claim · model-written summary
The ice1 mutant shows enhanced resistance to a bacterial pathogen.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- ice1 mutante6
- Interactor
- bacterial pathogene6pathogen
- Outcome
- resistance to a bacterial pathogene6
- Direction
- enhancede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Arabidopsis”
e6“The ice1 mutant has a low induction of BAP1 and enhanced resistance to a bacterial pathogen”
Claim · model-written summary
Responses to a moderate temperature decrease may use cold-response components and a salicylic acid-involving signalling pathway.
- Taxon
- ArabidopsisArabidopsist0
- Compound
- salicylic acide7
- Outcome
- responses to a moderate decrease in temperaturee7
- Qualifier
- may utilizee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Arabidopsis”
e7“responses to a moderate decrease in temperature may utilize components in the cold response as well as a potentiating signaling involving salicylic acid”