Insights into the regulation of C‐repeat binding factors in plant cold signaling

Liu, Jingyan; Shi, Yiting; Yang, Shuhua

doi:10.1111/jipb.12657

Cited by 167 publications

(123 citation statements)

References 131 publications

(238 reference statements)

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“…Even in the ice1‐2 ice2‐1 double mutant, the cold‐induced expression of CBF and COR genes is only partially affected, which suggests that additional transcription factors are involved in the regulation of CBF genes (Liu et al 2018). Our ChIP‐seq data revealed ICE1 binding to the promoters of several other transcription factors critical for cold response including CAMTA2 and to the promoters of other important regulators of cold response including MPK3, MPK4 and HOS1 (Table S1).…”

Section: Accession Numbermentioning

confidence: 99%

The transcription factor ICE1 functions in cold stress response by binding to the promoters of CBF and COR genes

Tang

Zhao

Ren

et al. 2020

JIPB

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103

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A recent paper by Kidokoro et al. (2020) in The Plant Cell reported a transgene‐dependent transcriptional silencing phenomenon in the dominant ice1‐1 Arabidopsis mutant containing the CBF3‐LUC reporter, and questioned whether ICE1 may regulate CBF genes and may be involved in plant cold response. Here, we evaluate available evidence supporting the involvement of ICE1 in plant cold response, and provide ChIP‐seq data showing ICE1 binding to the promoters of CBF genes and other regulatory genes known to be critical for cold response as well as to the promoters of some COR genes.

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Section: Accession Numbermentioning

confidence: 99%

The transcription factor ICE1 functions in cold stress response by binding to the promoters of CBF and COR genes

Tang

Zhao

Ren

et al. 2020

JIPB

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103

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“…Recent studies showed that ICE1 protein is phosphorylated by protein kinases, including OST1 (open stomata 1) and MPK3/6 in Arabidopsis, and OsMAPK3 in rice (Ding et al, 2015;Li et al, 2017a;Zhang et al, 2017;Zhao et al, 2017;Shi et al, 2018). More recently, OST1 was found to interact with and phosphorylate BTF3 proteins, b-subunits of a nascent polypeptide-associated complex (NAC), and enhances their interaction with CBF proteins, thereby stabilizing CBF proteins under cold stress Liu et al, 2018). Importantly, ICE1 is stabilized under cold stress after phosphorylation by cold-activated OST1, thereby promoting plant freezing tolerance (Ding et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Importantly, ICE1 is stabilized under cold stress after phosphorylation by cold-activated OST1, thereby promoting plant freezing tolerance (Ding et al, 2015). More recently, OST1 was found to interact with and phosphorylate BTF3 proteins, b-subunits of a nascent polypeptide-associated complex (NAC), and enhances their interaction with CBF proteins, thereby stabilizing CBF proteins under cold stress Liu et al, 2018). Nevertheless, the molecular mechanism underlying cold activation of OST1 remains unclear.…”

Section: Introductionmentioning

confidence: 99%

EGR 2 phosphatase regulates OST 1 kinase activity and freezing tolerance in Arabidopsis

et al. 2018

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OST1 (open stomata 1) protein kinase plays a central role in regulating freezing tolerance in Arabidopsis; however, the mechanism underlying cold activation of OST1 remains unknown. Here, we report that a plasma membrane-localized clade-E growth-regulating 2 (EGR2) phosphatase interacts with OST1 and inhibits OST1 activity under normal conditions. EGR2 is N-myristoylated by Nmyristoyltransferase NMT1 at 22°C, which is important for its interaction with OST1. Moreover, myristoylation of EGR2 is required for its function in plant freezing tolerance. Under cold stress, the interaction of EGR2 and NMT1 is attenuated, leading to the suppression of EGR2 myristoylation in plants. Plant newly synthesized unmyristoylated EGR2 has decreased binding ability to OST1 and also interferes with the EGR2-OST1 interaction under cold stress. Consequently, the EGR2-mediated inhibition of OST1 activity is released. Consistently, mutations of EGRs cause plant tolerance to freezing, whereas overexpression of EGR2 exhibits decreased freezing tolerance. This study thus unravels a molecular mechanism underlying cold activation of OST1 by membranelocalized EGR2 and suggests that a myristoyl switch on EGR2 helps plants to adapt to cold stress.

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“…So far, the most in‐depth cold signal transduction pathway in plants is called CBF regulon, which is well reviewed in Shi et al (2015), Liu et al (2018b), Shi et al (2018) and Ding et al (2019). Expressions of the cold responsive genes COLD REGULATED ( CORs ) are regulated by DEHYDRATION‐RESPONSIVE ELEMENT BINDING FACTORS ( DREBs )/ CBFs (Gilmour et al 1998; Liu et al 1998).…”

Section: Chilling Signal Transduction In Ricementioning

confidence: 99%

Coordination of light, circadian clock with temperature: The potential mechanisms regulating chilling tolerance in rice

Zhou

Fan

et al. 2019

JIPB

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Rice (Oryza sativa L.) is a major staple food crop for over half of the world's population. As a crop species originated from the subtropics, rice production is hampered by chilling stress. The genetic mechanisms of rice responses to chilling stress have attracted much attention, focusing on chilling-related gene mining and functional analyses. Plants have evolved sophisticated regulatory systems to respond to chilling stress in coordination with light signaling pathway and internal circadian clock. However, in rice, information about light-signaling pathways and circadian clock regulation and their roles in chilling tolerance remains elusive. Further investigation into the regulatory network of chilling tolerance in rice is needed, as knowledge of the interaction between temperature, light, and circadian clock dynamics is limited. Here, based on phenotypic analysis of transgenic and mutant rice lines, we delineate the relevant genes with important regulatory roles in chilling tolerance. In addition, we discuss the potential coordination mechanism among temperature, light, and circadian clock in regulating chilling response and tolerance of rice, and provide perspectives for the ongoing chilling signaling network research in rice.

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Insights into the regulation of C‐repeat binding factors in plant cold signaling

Cited by 167 publications

References 131 publications

The transcription factor ICE1 functions in cold stress response by binding to the promoters of CBF and COR genes

The transcription factor ICE1 functions in cold stress response by binding to the promoters of CBF and COR genes

EGR 2 phosphatase regulates OST 1 kinase activity and freezing tolerance in Arabidopsis

Coordination of light, circadian clock with temperature: The potential mechanisms regulating chilling tolerance in rice

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