Abstract
Plant acclimation to environmental stress is controlled by a complex network of regulatory genes that compose distinct stress-response regulons. In contrast to many signaling and regulatory genes that are stress specific, the zinc-finger protein Zat12 responds to a large number of biotic and abiotic stresses. Zat12 is thought to be involved in cold and oxidative stress signaling in Arabidopsis (Arabidopsis thaliana); however, its mode of action and regulation are largely unknown. Using a fusion between the Zat12 promoter and the reporter gene luciferase, we demonstrate that Zat12 expression is activated at the transcriptional level during different abiotic stresses and in response to a wound-induced systemic signal. Using Zat12 gain- and loss-of-function lines, we assign a function for Zat12 during oxidative, osmotic, salinity, high light, and heat stresses. Transcriptional profiling of Zat12-overexpressing plants and wild-type plants subjected to H(2)O(2) stress revealed that constitutive expression of Zat12 in Arabidopsis results in the enhanced expression of oxidative- and light stress-response transcripts. Under specific growth conditions, Zat12 may therefore regulate a collection of transcripts involved in the response of Arabidopsis to high light and oxidative stress. Our results suggest that Zat12 plays a central role in reactive oxygen and abiotic stress signaling in Arabidopsis.
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Claims 4
Claim · model-written summary
Zat12 transcription was activated during abiotic stresses and by a wound-induced systemic signal.
- Taxon
- Arabidopsis
Arabidopsist0 - Treatment
- different abiotic stressese0
- Gene
- Zat12e0
- Outcome
- Zat12 expressione0
- Direction
- activatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“we demonstrate that Zat12 expression is activated at the transcriptional level during different abiotic stresses and in response to a wound-induced systemic signal.”
t0“Arabidopsis”
Claim · model-written summary
Gain- and loss-of-function lines implicated Zat12 in oxidative, osmotic, salinity, high light, and heat stress responses.
- Taxon
- ArabidopsisArabidopsist0
- Gene
- Zat12e0
- Outcome
- function for Zat12e0
- Qualifier
- oxidative, osmotic, salinity, high light, and heat stressese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“we assign a function for Zat12 during oxidative, osmotic, salinity, high light, and heat stresses.”
t0“Arabidopsis”
Claim · model-written summary
Constitutive Zat12 expression enhanced oxidative- and light-stress response transcripts in Arabidopsis.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- constitutive expression of Zat12e0
- Gene
- Zat12e0
- Outcome
- expression of oxidative- and light stress-response transcriptse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“constitutive expression of Zat12 in Arabidopsis results in the enhanced expression of oxidative- and light stress-response transcripts.”
Claim · model-written summary
The authors suggest Zat12 regulates transcripts involved in high light and oxidative stress responses under specific growth conditions.
- Taxon
- ArabidopsisArabidopsise0
- Gene
- Zat12e0
- Outcome
- collection of transcriptse0
- Qualifier
- high light and oxidative stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zat12 may therefore regulate a collection of transcripts involved in the response of Arabidopsis to high light and oxidative stress.”
The same questions in other papers
overexpression · molecular: expression · ArabidopsisPositive and negative results
40 papers in the same direction as this paper · 14 in the opposite direction
- positive
- negative
- negative
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See all 55 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.