Abstract
CCCH-type zinc finger proteins are important for developmental and environmental responses. However, the precise roles of these proteins in plant stress tolerance are poorly understood. Arabidopsis thaliana Oxidation-related Zinc Finger 2 (AtOZF2) (At4g29190) is an AtOZF1 homolog previously isolated from Arabidopsis, which confers oxidative stress tolerance on plants. The AtOZF2 protein is localized in the plasma membrane, as is AtOZF1. Disruption expression of AtOZF2 led to reduced root length and leaf size. AtOZF2 was implicated to be involved in the ABA and salinity responses. atozf2 antisense lines were more sensitive to ABA and salt stress during the seed germination and cotyledon greening processes. In contrast, AtOZF2-overexpressing plants were more insensitive to ABA and salt stress than the wild type. Interestingly, in the presence of ABA and salt stress, the transcript level of ABA insensitive 2 (ABI2), but not that of ABI1, in AtOZF2-overexpressing plants was lower than that in the wild type, whereas the expression of ABI2 in atozf2 was significantly enhanced. Thus, AtOZF2 is involved in the ABA and salt stress response through the ABI2-mediated signaling pathway. Taken together, these findings provide compelling evidence that AtOZF2 is an important regulator for plant tolerance to abiotic stress.
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Claims 10
Claim · model-written summary
AtOZF2 protein localized to the plasma membrane.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianat0 - Gene
- AtOZF2e0
- Outcome
- localized in the plasma membranee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“The AtOZF2 protein is localized in the plasma membrane”
Claim · model-written summary
AtOZF2 disruption reduced root length and leaf size.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Gene
- AtOZF2e0
- Outcome
- root length and leaf sizee0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“Disruption expression of AtOZF2 led to reduced root length and leaf size”
Claim · model-written summary
atozf2 antisense lines were more sensitive to ABA during germination and cotyledon greening.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Material
- atozf2 antisense linese0
- Treatment
- ABAe0
- Outcome
- seed germination and cotyledon greening processese0
- Direction
- more sensitivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“atozf2 antisense lines were more sensitive to ABA and salt stress during the seed germination and cotyledon greening processes”
Claim · model-written summary
atozf2 antisense lines were more sensitive to salt stress during germination and cotyledon greening.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Material
- atozf2 antisense linese0
- Treatment
- salt stresse0
- Outcome
- seed germination and cotyledon greening processese0
- Direction
- more sensitivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“atozf2 antisense lines were more sensitive to ABA and salt stress during the seed germination and cotyledon greening processes”
Claim · model-written summary
AtOZF2 overexpressing plants were less sensitive to ABA than wild type.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Material
- AtOZF2-overexpressing plantse0
- Treatment
- ABAe0
- Outcome
- insensitive to ABAe0
- Direction
- more insensitivee0
- Comparator
- wild typee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“AtOZF2-overexpressing plants were more insensitive to ABA and salt stress than the wild type”
Claim · model-written summary
AtOZF2 overexpressing plants were less sensitive to salt stress than wild type.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Material
- AtOZF2-overexpressing plantse0
- Treatment
- salt stresse0
- Outcome
- insensitive to ABA and salt stresse0
- Direction
- more insensitivee0
- Comparator
- wild typee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“AtOZF2-overexpressing plants were more insensitive to ABA and salt stress than the wild type”
Claim · model-written summary
Under ABA and salt stress, ABI2 transcript was lower in AtOZF2 overexpressing plants than wild type.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Material
- AtOZF2-overexpressing plantse0
- Gene
- ABI2e0
- Outcome
- transcript level of ABA insensitive 2 (ABI2)e0
- Direction
- lowere0
- Comparator
- wild typee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“the transcript level of ABA insensitive 2 (ABI2), but not that of ABI1, in AtOZF2-overexpressing plants was lower than that in the wild type”
Claim · model-written summary
ABI1 transcript was not lower in AtOZF2 overexpressing plants than wild type.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Gene
- ABI1e0
- Outcome
- transcript level of ABA insensitive 2 (ABI2), but not that of ABI1e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“the transcript level of ABA insensitive 2 (ABI2), but not that of ABI1, in AtOZF2-overexpressing plants was lower than that in the wild type”
Claim · model-written summary
ABI2 expression was significantly enhanced in atozf2.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Material
- atozf2e0
- Gene
- ABI2e0
- Outcome
- expression of ABI2e0
- Direction
- enhancede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“the expression of ABI2 in atozf2 was significantly enhanced”
Claim · model-written summary
The authors infer that AtOZF2 acts in ABA and salt responses through ABI2 signaling.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Gene
- AtOZF2e0
- Outcome
- ABA and salt stress responsee0
- Qualifier
- ABI2-mediated signaling pathwaye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“AtOZF2 is involved in the ABA and salt stress response through the ABI2-mediated signaling pathway”
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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.