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Fytokrom-interagerande transkriptionsfaktorer pif4 och pif5

The abscisic acid signal is reported to delay ﬂowering by up-regulating Flowering Locus C expression, but the role of AFP2 in regulating ﬂowering time is unknown. ABI5 expression was shown to be positively regulated by ABI3, HYL1, and HY5 (Lopez‐Molina et al., 2002; Lu et al., 2002; Chen et al., 2008), but repressed by WRKY2, WRKY40, WRKY18, and WRKY60 (Jiang and Yu, 2009; Shang et al., 2010). ABI5 can also be regulated at the posttranscriptional level. 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 . Other Gene Models Analyses of ABI5 expression provide evidence for ABA regulation, cross-regulation by other ABI genes, and possibly autoregulation. 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.

Abi5

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 … 2001-04-10 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.

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protein abscisic acid-insensitive 5. GO Process (11) GO Function (3) GO Component (1) Gene Ontology Biological Process. negative regulation of seed germination ; positive … 2008-01-31 In addition, ABI5 was shown to directly activate its own expression, whereas BBX21 negatively regulates this activity by directly interacting with ABI5. Together, our study indicates that BBX21 coordinates with HY5 and ABI5 on the ABI5 promoter and that these transcriptional regulators work in concert to integrate light and ABA signaling in Arabidopsis thaliana.

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Indeed, stomatal aperture was significantly reduced by ABI5 overexpression in the absence or presence of ABA under monochromatic light conditions. ABA treatment upregulates the expression of XIW1, and both ABA and abiotic stresses promote XIW1 accumulation in the nucleus, where it interacts with ABI5. Loss of XIW1 function results in rapid proteasomal degradation of ABI5. Nations around the world are setting new records for COVID-19 deaths and new coronavirus infections, and the disease is surging even in some countries that have kept the virus in check.

The Arabidopsis abscisic acid (ABA)-insensitive abi5 mutants have pleiotropic defects in ABA response, including decreased sensitivity to ABA inhibition of germination … 2020-11-07 2019-02-01 2020-03-24 2020-03-24 2015-10-23 2020-03-02 2014-06-18 However, ABI5 was found to modulate the PYL11‐ and PYL12‐mediated ABA response. 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. 2021-03-06 ABI5 participates in ABA-regulated gene expression during seed development and subsequent vegetative stage by acting as the major mediator of ABA represssion of growth. It 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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ABI5 (ABA INSENSITIVE 5), which is a bZIP transcription factor, functions in the core ABA signaling. The effect of mutation in ABI5 gene was firstly described by Finkelstein’s (1994) group.

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 .
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Bio GRID 4.3 BioGRID Interaction 818008 Between ABI5 And FYPP3. Toggle navigation. Bio GRID 4.3 In addition, ABI5 was shown to directly activate its own expression, whereas BBX21 negatively regulates this activity by directly interacting with ABI5. Together, our study indicates that BBX21 coordinates with HY5 and ABI5 on the ABI5 promoter and that these transcriptional regulators work in concert to integrate light and ABA signaling in Arabidopsis thaliana. The Arabidopsis thaliana genome contains approximately 80 genes encoding basic leucine zipper transcription factors,divided into 11 groups.

Thus, we compared the transcription of FLC in Col, afp2, and AFP2-ox under LD conditions. ABI5-BINDING PROTEIN2 (AFP2) negatively regulates the abscisic acid signal by accelerating ABI5 degradation during seed germination in Arabidopsis (Arabidopsis thaliana). The abscisic acid signal is reported to delay ﬂowering by up-regulating Flowering Locus C expression, but the role of AFP2 in regulating ﬂowering time is unknown. ABI5 expression was shown to be positively regulated by ABI3, HYL1, and HY5 (Lopez‐Molina et al., 2002; Lu et al., 2002; Chen et al., 2008), but repressed by WRKY2, WRKY40, WRKY18, and WRKY60 (Jiang and Yu, 2009; Shang et al., 2010). ABI5 can also be regulated at the posttranscriptional level.