AtPPRT3, a novel E3 ubiquitin ligase, plays a positive role in ABA signaling

Liu, Yu; Lü, Peng; Gao, Xuemeng; Liu, Yingying; Liu, Zhibin; Li, Xufeng; Yang, Yi; Wang, Jianmei

doi:10.1007/s00299-020-02575-3

Cited by 10 publications

(5 citation statements)

References 42 publications

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“…For example, AtDREB2A, AtSIZ1, AtABF1, AtABI1, and AtPCS1 were signi cantly higher in GmbZIP152-OX plants than those in WT plants under stress condition (Chai et al 2022). Some stress-related genes, such as AtDREB2A, AtRD29A, AtERD10 and AtRD29B, indicated obviously higher expression levels in the AtPPRT3-OX lines than in WT Arabidopsis (Liu et al 2020). In line with these results, we found that the transcript level of abioticrelated genes (AtRD29A, AtRD29B, AtSIZ1, AtDREB2A, AtERD6 and AtRAB18) signi cantly upregulated in TabZIP11-OX lines compared to WT plants after NaCl treatment.…”

Section: Discussionsupporting

confidence: 82%

A novel wheat S1-bZIP gene, TabZIP11 confers stress resistance in Arabidopsis

Zhang,

Yu,

Liu

et al. 2024

Preprint

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The majority of basic leucine zipper (bZIP) transcription factor (TF) subgroup S1 play significant regulatory role in response to abiotic stress. However, their functions and underlying molecular mechanisms in abiotic stress responses are less known in wheat (Triticumaestivum L.). In this study, we isolated a TabZIP11 TF, which is from S1 subgroup of wheat bZIP transcription factor. TabZIP11 encodes a nuclear protein without transcriptional activation activity. Transcript of TabZIP11 gene was induced by abscisic acid (ABA), NaCl, and cold stress treatments. Whereas compared with NaCl treatment, TabZIP11 showed a lower expression level under NaCl+LaCl3 condition. We found that calcium-dependent protein kinase1 (TaCDPK1), TaCDPK5, TaCDPK9-1, TaCDPK30 and calcineurin B-like protein (CBL)-CBL-interacting protein kinase31 (TaCIPK31) cooperated with TabZIP11. The overexpression of TabZIP11 ectopically improved salt and freezing tolerances in Arabidopsis. TabZIP11 contributed to salt and freezing tolerance by modulating soluble sugar, proline, hydrogen peroxide (H2O2), and malondialdehyde (MDA) productions and abiotic stress responsive gene expression levels. TabZIP11 can form both homodimers and heterodimers with itself and group C TabZIP members. The modified yeast one-hybrid analysis confirmed that TabZIP36 significantly enhanced the binding ability of TabZIP11 to the promotor of TaCBF1 gene. Thus, these results suggest that TabZIP11 interacts with TabZIP36 to modulate cold signaling by facilitating the transcriptional activity of c-repeat binding factor (TaCBF1) gene. TabZIP11 functions as a positive regulator of salt stress responses through interacting with TaCDPK1/5/9-1/30 and TaCIPK31.

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Section: Discussionsupporting

confidence: 82%

A novel wheat S1-bZIP gene, TabZIP11 confers stress resistance in Arabidopsis

Zhang,

Yu,

Liu

et al. 2024

Preprint

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“…In addition to intracellular shuttling, ABA can also directly affect the expression of an E3 ligase. A recently discovered E3 ligase, AtPPRT3, is directly affected by ABA concentrations within the cell [77]. Genomic analysis found ABA responsive elements at the promoter of AtPPRT3, and the expression of AtPPRT3 transcripts is upregulated in the presence of exogenous ABA.…”

Section: Reinforcement Intersection Of the Ups With Aba In Abiotic Stmentioning

confidence: 99%

“…These data are reinforced with knockouts and overexpression lines that become hyposensitive and hypersensitive to exogenous ABA, respectively. AtPPRT3 could then work as a positive regulator of ABA to transduce the ABA signal to downstream pathways through potential interaction with transcription factors such as ABI3 or other ABA-dependent E3 ligases [77]. Considering the large transcriptome regulation by ABA and the important role of the UPS in ABA signaling, it is highly possible that other ABA-responsive E3 ligases would be further discovered to influence ABA-mediated stress responses.…”

Section: Reinforcement Intersection Of the Ups With Aba In Abiotic Stmentioning

confidence: 99%

The Ubiquitin Switch in Plant Stress Response

Doroodian

Hua

2021

Plants

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Ubiquitin is a 76 amino acid polypeptide common to all eukaryotic organisms. It functions as a post-translationally modifying mark covalently linked to a large cohort of yet poorly defined protein substrates. The resulting ubiquitylated proteins can rapidly change their activities, cellular localization, or turnover through the 26S proteasome if they are no longer needed or are abnormal. Such a selective modification is essential to many signal transduction pathways particularly in those related to stress responses by rapidly enhancing or quenching output. Hence, this modification system, the so-called ubiquitin-26S proteasome system (UPS), has caught the attention in the plant research community over the last two decades for its roles in plant abiotic and biotic stress responses. Through direct or indirect mediation of plant hormones, the UPS selectively degrades key components in stress signaling to either negatively or positively regulate plant response to a given stimulus. As a result, a tightly regulated signaling network has become of much interest over the years. The ever-increasing changes of the global climate require both the development of new crops to cope with rapid changing environment and new knowledge to survey the dynamics of ecosystem. This review examines how the ubiquitin can switch and tune plant stress response and poses potential avenues to further explore this system.

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“…However, it is important to note that SUMOylation and ubiquitylation intersect in multiple pathways and interact with various hormonal signalling pathways leading to antagonistic, synergistic, and even more complex outcomes [ 38 ]. In the case of abiotic stress tolerance, the ABA signalling pathway may be considered the primary target, which is modulated and regulated by Ub-SUMO systems [ 39 , 40 , 41 ].…”

Section: Small Ubiquitin Like-modifiers (Sumo) and The Role In Salini...mentioning

confidence: 99%

The Role of Plant Ubiquitin-like Modifiers in the Formation of Salt Stress Tolerance

Dabravolski,

Isayenkov

2024

Plants

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The climate-driven challenges facing Earth necessitate a comprehensive understanding of the mechanisms facilitating plant resilience to environmental stressors. This review delves into the crucial role of ubiquitin-like modifiers, particularly focusing on ATG8-mediated autophagy, in bolstering plant tolerance to salt stress. Synthesising recent research, we unveil the multifaceted contributions of ATG8 to plant adaptation mechanisms amidst salt stress conditions, including stomatal regulation, photosynthetic efficiency, osmotic adjustment, and antioxidant defence. Furthermore, we elucidate the interconnectedness of autophagy with key phytohormone signalling pathways, advocating for further exploration into their molecular mechanisms. Our findings underscore the significance of understanding molecular mechanisms underlying ubiquitin-based protein degradation systems and autophagy in salt stress tolerance, offering valuable insights for designing innovative strategies to improve crop productivity and ensure global food security amidst increasing soil salinisation. By harnessing the potential of autophagy and other molecular mechanisms, we can foster sustainable agricultural practices and develop stress-tolerant crops resilient to salt stress.

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AtPPRT3, a novel E3 ubiquitin ligase, plays a positive role in ABA signaling

Cited by 10 publications

References 42 publications

A novel wheat S1-bZIP gene, TabZIP11 confers stress resistance in Arabidopsis

A novel wheat S1-bZIP gene, TabZIP11 confers stress resistance in Arabidopsis

The Ubiquitin Switch in Plant Stress Response

The Role of Plant Ubiquitin-like Modifiers in the Formation of Salt Stress Tolerance

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