Brassinosteroids Regulate Circadian Oscillation via the BES1/TPL-CCA1/LHY Module in Arabidopsis thaliana

Lee, Hong Gil; Won, Jin Hoon; Choi, Yee-Ram; Lee, Kyoung-Hee; Seo, Pil Joon

doi:10.1016/j.isci.2020.101528

Cited by 11 publications

(10 citation statements)

References 64 publications

(109 reference statements)

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“…The bioactive form of BR, brassinolide (BL), enhances the interaction of BRI1 and BAK1 [136]. BAK1 triggers the intracellular signaling pathways that include the protein phosphatase BSU1, the serine/threonine-protein kinase BSK1, protein phosphatase 2A (PP2A) phosphatases, the Glycogen synthase kinase 3 (GSK3)-like kinase Brassinosteroid-insensitive 2 (BIN2), and BZR1 family TFs [8,137]. Therefore, mutations in genes encoding the BR synthesis and signaling pathways' main components cause limited plant yield and fertility, impaired growth and development of the organ, and severe dwarfism [7,35].…”

Section: Brs Signaling In Plantsmentioning

confidence: 99%

Brassinosteroids (BRs) Role in Plant Development and Coping with Different Stresses

Manghwar

Hussain

Gao

et al. 2022

IJMS

131

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Plants are vulnerable to a number of abiotic and biotic stresses that cause a substantial decrease in the production of plants. Plants respond to different environmental stresses by experiencing a series of molecular and physiological changes coordinated by various phytohormones. The use of phytohormones to alleviate abiotic stresses has recently achieved increasing interest. Brassinosteroids (BRs) are a group of polyhydroxylated steroidal phytohormones that are required for the development, growth, and productivity of plants. These hormones are involved in regulating the division, elongation, and differentiation of numerous cell types throughout the entire plant life cycle. BR studies have drawn the interest of plant scientists over the last few decades due to their flexible ability to mitigate different environmental stresses. BRs have been shown in numerous studies to have a positive impact on plant responses to various biotic and abiotic stresses. BR receptors detect the BR at the cell surface, triggering a series of phosphorylation events that activate the central transcription factor (TF) Brassinazole-resistant 1 (BZR1), which regulates the transcription of BR-responsive genes in the nucleus. This review discusses the discovery, occurrence, and chemical structure of BRs in plants. Furthermore, their role in the growth and development of plants, and against various stresses, is discussed. Finally, BR signaling in plants is discussed.

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Section: Brs Signaling In Plantsmentioning

confidence: 99%

Brassinosteroids (BRs) Role in Plant Development and Coping with Different Stresses

Manghwar

Hussain

Gao

et al. 2022

IJMS

131

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“…Since TPL/TPR proteins have redundant functions (Zhu et al , 2010; Harvey et al , 2020; Plant et al , 2021), we expected an overlap in binding targets between TPL and TPR1. Indeed, TPR1-GFP was enriched at several TPL targets found with ChIP-qPCR such as Constans (Goralogia et al , 2017), Apetala 3 (Gorham et al , 2018), Circadian clock associated 1 , Leafy and others (Lee et al , 2020) in both TPR1 Col or TPR1 eds1 (Fig. S4).…”

Section: Resultsmentioning

confidence: 96%

“…More specifically, the TPR1 eds1 ChIP-seq profile might be informative for studies of TPL/TPR-chromatin interactions in growth and development (Fig. S4; (Goralogia et al , 2017; Gorham et al , 2018; Lee et al , 2020; Plant et al , 2021)) since autoimmunity effects are lost in this line (Fig. 1).…”

Section: Discussionmentioning

confidence: 99%

ArabidopsisTopless-related 1 mitigates physiological damage and growth penalties of induced immunity

Griebel

Lapin

Locci

et al. 2021

Preprint

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Transcriptional corepressors of the Topless family are important regulators of plant hormone and immunity signaling. The lack of a genome-wide profile of their chromatin associations limits understanding of transcriptional regulation in plant immune responses. Chromatin immunoprecipitation with sequencing (ChIP-seq) was performed on GFP-tagged Topless-related 1 (TPR1) expressed in Arabidopsis thaliana lines with and without constitutive immunity dependent on Enhanced Disease Susceptibility 1 (EDS1). RNA-seq profiling of pathogen-infected tpl/tpr mutants and assessments of growth and physiological parameters were employed to determine TPL/TPR roles in transcriptional immunity and defense homeostasis. TPR1 bound to promoter regions of ~1,400 genes and ~10% of the detected binding required EDS1 immunity signaling. A tpr1 tpl tpr4 (t3) mutant displayed mildly enhanced defense-related transcriptional reprogramming upon bacterial infection but not increased bacterial resistance. Bacteria or pep1 phytocytokine-challenged t3 plants exhibited, respectively, photosystem II dysfunction and exacerbated root growth inhibition. Transgenic expression of TPR1 restored the t3 physiological defects. We propose that TPR1 and TPL-family proteins function in Arabidopsis to reduce detrimental effects associated with activated transcriptional immunity.

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“…For transient expression assays using Arabidopsis protoplasts, reporter and effector plasmids were employed [ 17 , 24 , 25 ]. The reporter plasmid contained a minimal 35S promoter sequence as well as the GUS gene [ 26 ].…”

Section: Methodsmentioning

confidence: 99%

The Arabidopsis JMJ29 Protein Controls Circadian Oscillation through Diurnal Histone Demethylation at the CCA1 and PRR9 Loci

Lee

Seo

2021

Genes

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The circadian clock matches various biological processes to diurnal environmental cycles, such as light and temperature. Accumulating evidence shows that chromatin modification is crucial for robust circadian oscillation in plants, although chromatin modifiers involved in regulating core clock gene expression have been limitedly investigated. Here, we report that the Jumonji C domain-containing histone demethylase JMJ29, which belongs to the JHDM2/KDM3 group, shapes rhythmic changes in H3K4me3 histone marks at core clock loci in Arabidopsis. The evening-expressed JMJ29 protein interacts with the Evening Complex (EC) component EARLY FLOWERING 3 (ELF3). The EC recruits JMJ29 to the CCA1 and PRR9 promoters to catalyze the H3K4me3 demethylation at the cognate loci, maintaining a low-level expression during the evening time. Together, our findings demonstrate that interaction of circadian components with chromatin-related proteins underlies diurnal fluctuation of chromatin structures to maintain circadian waveforms in plants.

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Brassinosteroids Regulate Circadian Oscillation via the BES1/TPL-CCA1/LHY Module in Arabidopsis thaliana

Cited by 11 publications

References 64 publications

Brassinosteroids (BRs) Role in Plant Development and Coping with Different Stresses

Brassinosteroids (BRs) Role in Plant Development and Coping with Different Stresses

ArabidopsisTopless-related 1 mitigates physiological damage and growth penalties of induced immunity

The Arabidopsis JMJ29 Protein Controls Circadian Oscillation through Diurnal Histone Demethylation at the CCA1 and PRR9 Loci

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