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Its stability or degradation plays a central role in abscisic acid response. Sumoylated at Lys-391 by SIZ1. Sumoylation protects ABI5 from proteasome degradation, attenuating ABA signaling and sensitivity to ABA… 2019-08-09 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. Responsible for reducing cadmium uptake, mediated by interaction with MYB49 . of ABI5 protein, whereas afp1 mutants were hypersensitive to ABA and had increased ABI5 accumulation (Lopez-Molina et al. 2003).

34. Sorbo tatbe intifl ®abi5 flägte, fem od) fl)ratio tufcnb, fejc^unbrab femtio. 26. ABI5 bryts även ned proteolytiskt av RING-fingerprotein Håller på väg, vilket säkerställer en låg nivå av ABI5-produktion i frånvaro av ABA 28, 29 . Dessa fem mutanter betecknas abi1 - abi5 (för ABA-känslig).

Abscisinsyrauppfattning och signalering: strukturella

2011-07-01 ABA INSENSITIVE 5 (ABI5) is a basic leucine zipper (bZIP) transcription factor which acts in the abscisic acid (ABA) network and is activated in response to abiotic stresses. However, the precise role of barley (Hordeum vulgare) ABI5 in ABA signaling and its function under stress remains elusive. Here, we show that HvABI5 is involved in ABA-dependent regulation of barley response to drought 2009-03-31 The Arabidopsis abscisic acid response gene ABI5 encodes a basic leucine zipper transcription factor. The Arabidopsis abscisic acid (ABA)-insensitive abi5 mutants have pleiotropic defects in ABA response, including decreased sensitivity to ABA inhibition of germination and altered expression of some ABA-regulated genes.

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These ABI5 levels were consistent with the ABA-sensitivity phenotypes of these lines. 2020-11-07 ABA Insensitive 5 (ABI5) is a basic leucine zipper transcription factor that plays a key role in the regulation of seed germination and early seedling growth in the presence of ABA and abiotic stresses. ABI5 functions in the core ABA signaling, which is composed of PYR/PYL/RCAR receptors, PP2C phosphatases and SnRK2 kinases, through the regulation The Arabidopsis abscisic acid response gene ABI5 encodes a basic leucine zipper transcription factor. The Arabidopsis abscisic acid (ABA)-insensitive abi5 mutants have pleiotropic defects in ABA response, including decreased sensitivity to ABA inhibition of germination … ABI5 modulates seed germination via feedback regulation of the expression of the PYR/PYL/RCAR ABA receptor genes. As abscisic acid (ABA) receptors, PYR1/PYL/RCAR (PYLs) play important roles in ABA-mediated seed germination, but the regulation of PYLs in this process, especially at the transcriptional level, remains unclear.

vegetative growth. ABI5 is necessary to maintain germinated embryos in a quiescent state thereby protecting plants from drought. As expected for a key player in ABA-triggered processes, ABI5 protein accumulation, phosphorylation, stability, and activity are highly regulated by ABA ABSCISIC ACID INSENSITIVE5 (ABI5) acts as a central convergence point for the two pathways. In light, ELONGATED HYPOCOTYL5 (HY5) directly binds to G‐box motif (CACGTG) on the promoter of ABI5 and activates its expression. ABI5 is a central regulator of seed germination and post-germinative growth in Arabidopsis (Lopez-Molina et al., 2001). To test whether ABT affects early developmental processes through ABI5, we performed western blot analysis to assess ABI5 protein levels in imbibed abt-1D, abt-2, and WT seeds treated with ABA for 48 h.
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Over-expression of AFP1 enhances tolerance to ABA and reduces ABI5 accumulation, whereas afp1 mutants are sensitive to ABA and have high levels of ABI5 (Lopez-Molinaetal.,2003).TherearethreeAFP1homologs(i.e.

ABI5 is tightly controlled by the core ABA signaling components and many other regulators. Removal of ABA results in the rapid degradation of ABI5 and the expression of ABI5 is strongly induced by exogenous ABA or diverse abiotic stresses, including salt and drought (Lopez‐Molina et al., 2001, 2002; Shu et al., 2013; Skubacz et al., 2016). 2013-01-09 Background ABI5 (abscisic acid insensitive 5) is involved in ABA-regulated gene expression during seed development and subsequent vegetative stage and acts as the major mediator of ABA repression of growth. Binds to the embryo specification element and the ABA-responsive element (ABRE) of the Dc3 gene promoter and to the ABRE of the Em1 and Em6 genes promoters.
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Jiang Yang - Chalmers Research

negative regulator of ABA signaling that promotes ABI5 degradation during seed germination. Over-expression of AFP1 enhances tolerance to ABA and reduces ABI5 accumulation, whereas afp1 mutants are sensitive to ABA and have high levels of ABI5 (Lopez-Molinaetal.,2003).TherearethreeAFP1homologs(i.e.

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Abscisinsyrauppfattning och signalering: strukturella

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