The various functions of these target genes indicate that ANAC060 has several functions. Our results demonstrate that ANAC060 directly binds to the promoter of ABI5 and represses the sugar‐induced transcription of ABI5. Genetic data indicate that ABI5 is epistatic …
Abscisic acid (ABA) plays crucial roles in plant development and adaption to environmental stresses. The ABA-responsive element binding protein/ABRE-binding factor and ABA INSENSITIVE 5 (AREB/ABF/ABI5) gene subfamily members, which belong to the basic domain/leucine zipper (bZIP) transcription factors family, participate in the ABA-mediated signaling pathway by regulating the expression of
Comparison of seed and ABA-inducible vegetative gene expression in wild-type and abi5-1 plants indicates that ABI5 regulates a subset of late embryogenesis–abundant genes during both developmental stages. Abscisic acid (ABA) and stress response from late embryonic growth through early seedling development is regulated by a signaling network that includes the Arabidopsis ABA-insensitive (ABI)5 gene, which encodes a basic leucine zipper transcription factor. ABI5, an ABA-insensitive gene, encodes a basic leucine zipper transcription factor. Expres- sion of ABI5 defines a narrow developmental checkpoint following germination, during which Arabidopsis plants sense the water status in the environment.
Moreover, the expression of eight other PYL s is also affected during the germination of abi5 mutants. Promoter analysis revealed that an ABI5‐binding region is present next to the TATA box or initiator box. 2016-09-14 2021-03-06 2012-10-23 2020-10-03 ABI5, an ABA-insensitive gene, encodes a basic leucine zipper transcription factor. Expres- sion of ABI5 defines a narrow developmental checkpoint following germination, during which Arabidopsis plants sense the water status in the environment.
The previously characterized abi5-1 allele encodes a protein that lacks the DNA binding and dimerization domains required for ABI5 function.
and nitric oxide (NO) crosstalk in seeds: Function of ABI5 and ANACO89 Análisis de polimorfismos de genes relacionados con la función endotelial y la
Responsible for reducing cadmium uptake, mediated by interaction with MYB49. Summary Encodes a member of a small plant-specific gene family whose members interact with ABI5 and appear to be involved in mediating stress responses. AFP2 mutants affect a number of ABA mediated processes such as germination and response to osmotic and sugar stress.
In abi5–4 plants, ABI5(K391R ) expression caused greater ABA hypersensitivity (gene expression, seed germination arrest and primary root growth inhibition) compared with ABI5 expression. Together, these results establish that SIZ1-dependent sumoylation of ABI5 attenuates ABA signaling.
Other Gene Models ABI5-Regulated Gene Expression. Our initial characterization of the abi5-1 mutant indicated that ABI5 regulated at least one gene expressed late in embryogenesis, AtEm6 (Finkelstein, 1994). However, ABI5 action was not necessary for vegetative ABA responses such as stomatal regulation. The abi5-5 mutation was characterized at the molecular level and was shown to result from a two base pair deletion in the coding sequence of the ABI 5 gene. The wild type and mutant recombinant proteins were produced in E. coli and were assayed for DNA-binding activity on their target promoters by electrophoretic mobility shift assay (EMSA). 2020-10-03 · Encodes a member of a small plant-specific gene family whose members interact with ABI5 and appear to be involved in mediating stress responses. AFP2 mutants affect a number of ABA mediated processes such as germination and response to osmotic and sugar stress.
ABI5 is one of these.
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Expres- sion of ABI5 defines a narrow developmental checkpoint following germination, during which Arabidopsis plants sense the water status in the environment. ABI5 is a rate- limiting factor conferring ABA-mediated postgermination developmental growth arrest.
RNA-sequencing
Using transient gene expression in rice protoplasts, we provide evidence for the functional interactions of ABI5 with ABA signaling effectors VP1 (viviparous 1) and
The transcription factor.
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Abscisic acid (ABA) and stress response from late embryonic growth through early seedling development is regulated by a signaling network that includes the Arabidopsis ABA-insensitive (ABI)5 gene, which encodes a basic leucine zipper transcription factor.
ABI5 is a rate- limiting factor conferring ABA-mediated postgermination developmental growth arrest. In the abi5‐7 mutant, ABA hypersensitivity caused by PYL11 and PYL12 overexpression was totally or partially blocked. By contrast, ABI5 regulates the expression of PYL11 and PYL12 by directly binding to their promoters.
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Gene Name Synonym ABA Insensitive 5, bZIP-type transcription factor ABI5, bZIP transcription factors OsABI5, bZIP transcription factor 10, Abscisic acid insensitive 5 Protein Name BZIP-TYPE TRANSCRIPTION FACTOR ABI5 Allele abi5-1 Chromosome No.
Abscisic acid (ABA) plays crucial roles in plant development and adaption to environmental stresses. The ABA-responsive element binding protein/ABRE-binding factor and ABA INSENSITIVE 5 (AREB/ABF/ABI5) gene subfamily members, which belong to the basic domain/leucine zipper (bZIP) transcription factors family, participate in the ABA-mediated signaling pathway by regulating the expression of ABI5 expression is autoregulated in transgenic plants and yeast ( Saccharomyces cerevisiae ), and stress response appears to involve ABI5-dependent and -independent mechanisms. To determine whether ABI5 is necessary and/or sufficient for ABA or stress response, we assayed the effects of increased ABI5 expression on growth and gene expression. The various functions of these target genes indicate that ANAC060 has several functions. Our results demonstrate that ANAC060 directly binds to the promoter of ABI5 and represses the sugar‐induced transcription of ABI5.