Sumoylation of ABI5 by the ArabidopsisSUMO E3 ligase SIZ1 negatively regulates abscisic acid signaling Kenji Miuraa,b,1, Jiyoung Leec,2, Jing Bo Jina,3, Chan Yul Yooa, Tomoko Miuraa, and Paul M. Hasegawaa,1
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Similar to abi5, loss of ABF1 and ABF3 partially rescued the keg phenotype after ABA 2021-03-06 · Encodes a member of the basic leucine zipper transcription factor family, involved in ABA signalling during seed maturation and germination. 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. Although the mechanisms by which the expression of ABI5 is regulated by ABI3 are unknown, a key observation of our work is that ABI5 can complement abi3‐1, whereas ABI3 cannot complement abi5‐4. This strongly suggests that ABI5 acts downstream of ABI3 to arrest growth of germinated embryos by 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., 2001). WTy35S::HA-ABI5 transgenic seedlings (T3 generation) were treated in liquid MS medium with [32P]orthophosphoric acid [100 mCi (1 Ci 5 37 GBq), 285.5 Ciymg, NEN] for 90 min.
ABA signaling, from ABI5 protein and transcript accumulation is highly regulated by ABA. WT Ws seeds were ABI5 levels were monitored by Western blot analysis. Photographs Rabbit polyclonal ABI5 antibody. Tested Recommended alternatives for this product can be found below, along with publications, customer reviews and Q&As overexpression of ABI5 confers hypersensitivity to ABA and sugar, as previously described for ABI4 and loss of desiccation tolerance (for review, see Finkel-. Abscisic acid (ABA) insensitive 5 (ABI5)—a core transcription factor of the ABA Phylogenetic analysis of StABI5 and other species of ABI5 proteins showed that ABI5. Organism. Arabidopsis thaliana (Mouse-ear cress). Status Modified residuei, 201, PhosphothreonineSequence analysis, 1.
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. Although the mechanisms by which the expression of ABI5 is regulated by ABI3 are unknown, a key observation of our work is that ABI5 can complement abi3‐1, whereas ABI3 cannot complement abi5‐4. This strongly suggests that ABI5 acts downstream of ABI3 to arrest growth of germinated embryos by 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., 2001).
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As a crucial regulator of ABA signaling, ABSCISIC ACID-INSENSITIVE5 (ABI5) is involved in many aspects of plant growth and development, yet its regulation of anthocyanin biosynthesis has not been elucidated. In this study, we found that MdABI5, the apple homolog of Arabidopsis ABI5, positively regulated ABA-induced anthocyanin biosynthesis.
The expression of ABI5 is upregulated by ABI3, and ABI3 itself can also directly regulate the expression of key negative regulators involved in the seed-to-seedling transition 42.
abi5-1 seedlings grown at low CO 2 showed lower F v /F m values (Fig. 6C, D).
Genetic and physiological evidence has demonstrated this key role of ABI5 in this process.
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6C, D). CO 2 assimilation in the mature abi5-1 mutant was reduced under low CO 2 conditions, and could be fully recovered by non-photorespiratory (low O 2) conditions (Fig. 9F, G). Characterization of abi5 mutants in a second legume species, pea (Pisum sativum), confirmed a role for ABI5 in the regulation of longevity, seed degreening, and RFO accumulation, identifying ABI5 as a prominent regulator of late seed maturation in legumes.
In this review, we present the current understanding of the way ABI5 functions as (1) a regulator of abiotic stress responses and (2) an integrator of ABA crosstalk with other phytohormones. The results that are described primarily refer to
In this study, we generated a genome‐wide DNA‐binding map of ANAC060, indicating that it directly binds to a G‐box motif. ANAC060 binds to the ABI5 promoter and represses ABI5 transcription, rendering seedling growth insensitive to sugar and ABA.
Abscisic acid‐insensitive 5 (ABI5) is an essential and conserved plant basic leucine zipper transcription factor whose level controls seed germination and postgerminative development.
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Although the mechanisms by which the expression of ABI5 is regulated by ABI3 are unknown, a key observation of our work is that ABI5 can complement abi3‐1, whereas ABI3 cannot complement abi5‐4. This strongly suggests that ABI5 acts downstream of ABI3 to arrest growth of …
Abscisic acid‐insensitive 5 (ABI5) is an essential and conserved plant basic leucine zipper transcription factor whose level controls seed germination and postgerminative development. It has been demonstrated that activity of ABI5 is transcriptionally and post‐translationally regulated. Transgenic plants of ABI5-5, ABI5 S42A, ABI5 S145A, and ABI5 S42AS145AT201A were generated by Agrobacterium tumefaciens GV3101-mediated floral infiltration (Clough and Bent, 1998).
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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., 2001).
In this review, we present the current understanding of the way ABI5 functions as (1) a regulator of abiotic stress responses and (2) an integrator of ABA crosstalk with other phytohormones. The results that are described primarily refer to In this study, we generated a genome‐wide DNA‐binding map of ANAC060, indicating that it directly binds to a G‐box motif. ANAC060 binds to the ABI5 promoter and represses ABI5 transcription, rendering seedling growth insensitive to sugar and ABA. Abscisic acid‐insensitive 5 (ABI5) is an essential and conserved plant basic leucine zipper transcription factor whose level controls seed germination and postgerminative development. It has been demonstrated that activity of ABI5 is transcriptionally and post‐translationally regulated.