ABF2, an ABRE‐binding bZIP factor, is an essential component of glucose signaling and its overexpression affects multiple stress tolerance

Kim, Sunmi; Kang, Jung-youn; Cho, Dong-Im; Park, Ji Hye; Kim, Soo Young

doi:10.1111/j.1365-313x.2004.02192.x

Cited by 430 publications

(359 citation statements)

References 52 publications

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“…2B, C). Kim et al reported that ABF2 over-expressed plants were insensitive to ABA for leaves and hyper-sensitive to ABA for roots (12). OsAREB1 in our study is the most homologous gene to ABF2, OsAREB1 may have similar response.…”

Section: Overexpression Of Osareb1 Alters Seedling Sensitivity To Abamentioning

confidence: 56%

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OsAREB1, an ABRE-binding protein responding to ABA and glucose, has multiple functions in Arabidopsis

Jin

Xiong²,

Peng³

et al. 2010

BMB Reports

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Section: Overexpression Of Osareb1 Alters Seedling Sensitivity To Abamentioning

confidence: 56%

“…These reported studies suggest that ABFs may function in different stress response pathways; i.e. ABF1 in cold signaling; ABF2 in salt, drought, heat and glucose signaling pathways (12,13); ABF3 in salt signaling; ABF4 in cold, salt, and drought signaling pathways (12).…”

Section: Introductionmentioning

confidence: 99%

OsAREB1, an ABRE-binding protein responding to ABA and glucose, has multiple functions in Arabidopsis

Jin

Xiong²,

Peng³

et al. 2010

BMB Reports

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“…It is generally accepted that activation of a specific transcription factor can often result in expression of many functional genes related to stresses. Many efforts have been reported to improve stress resistance of plants by over-expressing stress-responsive transcription factor genes such as DREB/ CBF (Liu et al 1998), ABF2 (Kim et al 2004), OSISAP1 (Mukhopadhyay et al 2004) and etc.…”

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confidence: 99%

Characterization of transcription factor gene SNAC2 conferring cold and salt tolerance in rice

et al. 2008

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Plants respond to adverse environment by initiating a series of signaling processes including activation of transcription factors that can regulate expression of arrays of genes for stress response and adaptation. NAC (NAM, ATAF, and CUC) is a plant specific transcription factor family with diverse roles in development and stress regulation. In this report, a stress-responsive NAC gene (SNAC2) isolated from upland rice IRA109 (Oryza sativa L. ssp japonica) was characterized for its role in stress tolerance. SNAC2 was proven to have transactivation and DNA-binding activities in yeast and the SNAC2-GFP fusion protein was localized in the rice nuclei. Northern blot and SNAC2 promoter activity analyses suggest that SNAC2 gene was induced by drought, salinity, cold, wounding, and abscisic acid (ABA) treatment. The SNAC2 gene was over-expressed in japonica rice Zhonghua 11 to test the effect on improving stress tolerance. More than 50% of the transgenic plants remained vigorous when all WT plants died after severe cold stress (4-8°C for 5 days). The transgenic plants had higher cell membrane stability than wild type during the cold stress. The transgenic rice had significantly higher germination and growth rate than WT under high salinity conditions. Over-expression of SNAC2 can also improve the tolerance to PEG treatment. In addition, the SNAC2-overexpressing plants showed significantly increased sensitivity to ABA. DNA chip profiling analysis of transgenic plants revealed many up-regulated genes related to stress response and adaptation such as peroxidase, ornithine aminotransferase, heavy metal-associated protein, sodium/hydrogen exchanger, heat shock protein, GDSL-like lipase, and phenylalanine ammonia lyase. Interestingly, none of the up-regulated genes in the SNAC2-overexpressing plants matched the genes up-regulated in the transgenic plants over-expressing other stress responsive NAC genes reported previously. These data suggest SNAC2 is a novel stress responsive NAC transcription factor that possesses potential utility in improving stress tolerance of rice.

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“…ABI5 is a genetically identified ABA signaling component that plays an essential role in seed germination and ABA-triggered developmental arrest processes after germination in Arabidopsis. In contrast, ABFs or AREBs function mostly in the vegetative stage (Choi et al, 2000;Uno et al, 2000;Kang et al, 2002;Kim et al, 2004;Fujita et al, 2011). However, recent reports confirmed that the AREB/ ABF/ABI5 members are major targets of SnRK2 protein kinases in ABA core signaling Fujita et al, 2009).…”

mentioning

confidence: 99%

“…AREB1/ABF2 has been further documented for its posttranslational modification, which is related to its activity regulation (Fujita et al, 2005;Furihata et al, 2006). Thus far, SnRK2-AREB/ABF has been proven as a major module regulating ABA-mediated gene expression in response to abiotic stresses in Arabidopsis (Kim et al, 2004;Fujita et al, 2005;Furihata et al, 2006;Yoshida et al, 2010).…”

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confidence: 99%

Constitutive Activation of Transcription Factor OsbZIP46 Improves Drought Tolerance in Rice

et al. 2012

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OsbZIP46 is one member of the third subfamily of bZIP transcription factors in rice (Oryza sativa). It has high sequence similarity to ABA-responsive element binding factor (ABF/AREB) transcription factors ABI5 and OsbZIP23, two transcriptional activators positively regulating stress tolerance in Arabidopsis (Arabidopsis thaliana) and rice, respectively. Expression of OsbZIP46 was strongly induced by drought, heat, hydrogen peroxide, and abscisic acid (ABA) treatment; however, it was not induced by salt and cold stresses. Overexpression of the native OsbZIP46 gene increased ABA sensitivity but had no positive effect on drought resistance. The activation domain of OsbZIP46 was defined by a series of deletions, and a region (domain D) was identified as having a negative effect on the activation. We produced a constitutive active form of OsbZIP46 (OsbZIP46CA1) with a deletion of domain D. Overexpression of OsbZIP46CA1 in rice significantly increased tolerance to drought and osmotic stresses. Gene chip analysis of the two overexpressors (native OsbZIP46 and the constitutive active form OsbZIP46CA1) revealed that a large number of stress-related genes, many of them predicted to be downstream genes of ABF/ AREBs, were activated in the OsbZIP46CA1 overexpressor but not (even down-regulated) in the OsbZIP46 overexpressor. OsbZIP46 can interact with homologs of SnRK2 protein kinases that phosphorylate ABFs in Arabidopsis. These results suggest that OsbZIP46 is a positive regulator of ABA signaling and drought stress tolerance of rice depending on its activation. The stress-related genes activated by OsbZIP46CA1 are largely different from those activated by the other rice ABF/AREB homologs (such as OsbZIP23), further implying the value of OsbZIP46CA1 in genetic engineering of drought tolerance.

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ABF2, an ABRE‐binding bZIP factor, is an essential component of glucose signaling and its overexpression affects multiple stress tolerance

Cited by 430 publications

References 52 publications

OsAREB1, an ABRE-binding protein responding to ABA and glucose, has multiple functions in Arabidopsis

OsAREB1, an ABRE-binding protein responding to ABA and glucose, has multiple functions in Arabidopsis

Characterization of transcription factor gene SNAC2 conferring cold and salt tolerance in rice

Constitutive Activation of Transcription Factor OsbZIP46 Improves Drought Tolerance in Rice

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