ABI5 is a key component in ABA-triggered pathways during germination, seedling establishment, and vegetative growth (Lopez-Molina et al., 2001); in addition, it has been reported to play certain roles in nitrogen assimilation and signaling (Signora et al., 2001).
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 .
The Arabidopsis abscisic acid (ABA)-insensitive abi5 mutants have pleiotropic defects in ABA response, including decreased sensitivity to ABA inhibition of germination … 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 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. This postgermination developmental checkpoint is signaled by the stress hormone abscisic acid (ABA), which induces the expression of the bZIP transcription activator ABI5.
Artikel i vetenskaplig tidskrift, refereegranskad. Författare. Dongqing Xu | Institutionen för biologi ABI5 (abscisic acid insensitive 5) is involved in ABA-regulated gene expression during seed development and subsequent vegetative stage and acts as the Further, we used a genetic approach taking advantage of the weak aba insensitive genes which are affected by DOG1 partly via control of ABI5 expression. av E Henriksson · 2004 · Citerat av 6 — The other cloned ABA insensitive loci, ABI3, ABI4 and ABI5, encode transcription factors of the. B3-, APETALA2- (AP2), and basic leucine zipper (bZIP) domain in the crosstalk between light and abscisic acid (ABA) network, and identified or ABA INSENSITIVE 5 (ABI5), thereby interfering with HY5 or ABI5 binding to Convergence of light and ABA signaling on the ABI5 promoter.
AFP1, KEG and RPN10 mediate its proteasome-dependent degradation. Its stability or degradation plays a central role in abscisic acid response.
9 Aug 2019 By contrast, the ABA-independent pathway induces expression of a transcription factor gene, DREB2. DREB2 belongs to the DRE BINDING
These ABI5 levels were consistent with the ABA-sensitivity phenotypes of these lines. Arabidopsis, polyclonal, antibody, ABI5, ABA INSENSITIVE 5, GIA1, GROWTH-INSENSITIVITY TO ABA 1, Dc3 promoter-binding factor 1, AtDPBF1, GROWTH-INSENSITIVITY TO ABA 1, bZIP transcription factor 39, AtbZIP39 III. ABA puts a brake on light-induced greening of seedlings 765 IV. ABA modulates seedling adaptation to shade and high light 766 V. Concluding remarks 768 Acknowledgements 768 References 768 New Phytologist (2021) 229: 763–769 doi: 10.1111/nph.16963 Keywords: abscisicacid(ABA),abioticstress, ABI5, COP1, HY5, light signalling, The accumulated ABI5 protein further shows heteromeric interaction with HY5, and thus synergistically activates its own expression. Our findings reveal a novel transcriptional switch, composed of JMJ17–WRKY40 and HY5–ABI5 modules, which regulates the ABA response during seed germination and seedling development in Arabidopsis. Se hela listan på frontiersin.org regulation of ABI5 expression represents an integration of light and ABA signaling during seed germination and early seedling development.
ABI5 accumulation is induced by ABA only within a short interval of about 60 h following stratification, during which ABA and ABA‐dependent ABI5 activity are essential to initiate growth arrest of germinated embryos. The arrested, germinated embryos remain viable but quiescent, and osmotolerant as long as ABA is present.
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Studies have identified the key components of ABA signaling in Arabidopsis ( Arabidopsis thaliana ), some of which regulate ABA responses by the transcriptional regulation of downstream genes. Here, we report the functional identification of rice ( Oryza sativa ) ABI5-Like1 (ABL1 ABI5 Encodes a Basic Leucine Zipper Transcription Factor Ruth R. Finkelstein 1 and Tim J. Lynch Department of Molecular, Cellular and Developmental Biology, University of California–Santa Barbara, Santa Barbara, California 93106 The Arabidopsis abscisic acid (ABA)–insensitive abi5 mutants have pleiotropic defects in ABA response, including de- 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.
Our re-sults thus showed that ABA regulates early seed development by ABI5-regulated SHB1 expression.
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abi5 was characterized as ABA insensitive in comparison to the wild type during seed germination. The mutation was mapped on 2 chromosome (Finkelstein,1994). Transcriptomic analysis of abi5 mutant indicated the lower level of expression of stress responsive genes.
2000-04-01 regulation of ABI5 expression represents an integration of light and ABA signaling during seed germination and early seedling development. Accumulating evidence indicates that BBX proteins work in concert with HY5 in regulating photomorphogenesis [14–17,20]. Since HY5 directly activates ABI5 expression, it is interesting to investigate whether BBX proteins are also involved in ABA signaling. ABI5 accumulation is induced by ABA only within a short interval of about 60 h following stratification, during which ABA and ABA‐dependent ABI5 activity are essential to initiate growth arrest of germinated embryos. The arrested, germinated embryos remain viable but quiescent, and osmotolerant as long as ABA … Disruption of ABI5 increases Arabidopsis ABA‐insensitivity and decreases the expression of many ABA‐responsive genes (Finkelstein and Lynch, 2000b), whereas ABI5‐overexpressing plants were hypersensitive to ABA during seed germination and early seedling development (Lopez‐Molina et al., … 2014-02-27 2015-03-20 2021-03-06 Moreover, ABI5 also acts as an ABA and other phytohormone signaling integrator.
mutantes con hipersensibilidad al ABA. En plántulas de la línea mutante y sobreexpresora se analizó el transcrito de los factores de transcripción ABI3 y ABI5,
In wild‐type Arabidopsis plants, ABI3 expression and activity parallel those described for ABI5 following Convergence of Light and ABA Signaling on the ABI5 Promoter Dongqing Xu1,2., Jigang Li2,3,4., Sreeramaiah N. Gangappa1¤a, Chamari Hettiarachchi1¤b, Fang Lin2, Mats X. Andersson1, Yan Jiang1, Xing Wang Deng2,4*, Magnus Holm1{ 1Department of Biological and Environmental Sciences, Gothenburg University, Gothenburg, Sweden, 2Peking-Yale Joint Center for Plant Molecular Genetics … 2002-11-01 ABI5 encodes a bZIP transcription factor, and is domi-nantly expressed in seeds but not in vegetative tissues, indicating that these transcription factors specifically function in seed mat-uration and germination.12,13 Like drought and high-salt stress, exogenous application of ABA induces ABI5 expression in germi - ABA-responsive through ABI5-dependent signaling (e.g., RD29A, Rd29B, AtEm6, RAB18, ADH1) was hyperinduced by the hormone in siz1 seedlings. abi5–4 suppressed ABA hypersensitivity caused by siz1 (siz1–2 abi5–4), demonstrating an epistatic genetic inter-action between SIZ1 and ABI5. A K391R substitution in ABI5 ABI5 is a basic leucine zipper (bZIP) TF that plays a crucial role in ABA signaling-mediated seed germination, chlorophyll catabolism, leaf senescence, and abiotic stress adaptation (Kanai et al., 2010; Sakuraba et al., 2014; Skubacz et al., 2016; Zhao et al., 2020). 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.
310 genes were identified as. ABI5/ABA regulated mutantes con hipersensibilidad al ABA. En plántulas de la línea mutante y sobreexpresora se analizó el transcrito de los factores de transcripción ABI3 y ABI5, 9 Aug 2019 By contrast, the ABA-independent pathway induces expression of a transcription factor gene, DREB2. DREB2 belongs to the DRE BINDING Abscisic acid (ABA) insensitive 5 (ABI5)—a core transcription factor of the ABA signaling pathway—is a basic leucine zipper transcription factor that plays a key Post-translational modifications (PTMs) such as phosphorylation, ubiquitination, and sumoylation play significant roles in regulating abscisic acid (ABA) Using transient gene expression in rice protoplasts, we provide evidence for the functional interactions of ABI5 with ABA signaling effectors VP1 (viviparous 1) Although ABI5 is generally recognized as a transcription factor that functions in the nucleus, it interacts with RING type E3 ubiquitin ligase KEG, which is localized Arabidopsis, polyclonal, antibody, ABI5, ABA INSENSITIVE 5, GIA1, GROWTH- INSENSITIVITY TO ABA 1, Dc3 promoter-binding factor 1, AtDPBF1, 16 Dec 2016 ABA Insensitive 5 (ABI5) is a basic leucine zipper transcription factor that plays a key role in the regulation of seed germination and early At May Institute, we use the principles of ABA to support individuals with autism spectrum disorder (ASD) and their families to: Learn to communicate and interact Our factories have been producing our “Elite” brand product for Local Area Network, including copper, fiber cable and connectivity.