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Chery M, Berrissou C, Humbert N, Hummel G, Mely Y, Salinas-Giegé T, Drouard L. The Arabidopsis tDR Ala forms G-quadruplex structures that can be unwound by the DExH1 DEA(D/H)-box RNA helicase. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 118:124-140. [PMID: 38113339 DOI: 10.1111/tpj.16596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 11/05/2023] [Accepted: 12/04/2023] [Indexed: 12/21/2023]
Abstract
As in many other organisms, tRNA-derived RNAs (tDRs) exist in plants and likely have multiple functions. We previously showed that tDRs are present in Arabidopsis under normal growth conditions, and that the ones originating from alanine tRNAs are the most abundant in leaves. We also showed that tDRs Ala of 20 nt produced from mature tRNAAla (AGC) can block in vitro protein translation. Here, we report that first, these tDRs Ala (AGC) can be found within peculiar foci in the cell that are neither P-bodies nor stress granules and, second, that they assemble into intermolecular RNA G-quadruplex (rG4) structures. Such tDR Ala rG4 structures can specifically interact with an Arabidopsis DEA(D/H) RNA helicase, the DExH1 protein, and unwind them. The rG4-DExH1 protein interaction relies on a glycine-arginine domain with RGG/RG/GR/GRR motifs present at the N-terminal extremity of the protein. Mutations on the four guanine residues located at the 5' extremity of the tDR Ala abolish its rG4 structure assembly, association with the DExH1 protein, and foci formation, but they do not prevent protein translation inhibition in vitro. Our data suggest that the sequestration of tDRs Ala into rG4 complexes might represent a way to modulate accessible and functional tDRs for translation inhibition within the plant cell via the activity of a specific RNA helicase, DExH1.
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Affiliation(s)
- Marjorie Chery
- Institut de Biologie Moléculaire des Plantes - CNRS, Université de Strasbourg, 12 rue du général Zimmer, F-67084, Strasbourg, France
| | - Christina Berrissou
- Institut de Biologie Moléculaire des Plantes - CNRS, Université de Strasbourg, 12 rue du général Zimmer, F-67084, Strasbourg, France
| | - Nicolas Humbert
- Laboratoire de Bioimagerie et Pathologies - CNRS, UMR 7021, Faculté de Pharmacie, Université de Strasbourg, 74 route du Rhin, 67401, Illkirch, France
| | - Guillaume Hummel
- Institut de Biologie Moléculaire des Plantes - CNRS, Université de Strasbourg, 12 rue du général Zimmer, F-67084, Strasbourg, France
| | - Yves Mely
- Laboratoire de Bioimagerie et Pathologies - CNRS, UMR 7021, Faculté de Pharmacie, Université de Strasbourg, 74 route du Rhin, 67401, Illkirch, France
| | - Thalia Salinas-Giegé
- Institut de Biologie Moléculaire des Plantes - CNRS, Université de Strasbourg, 12 rue du général Zimmer, F-67084, Strasbourg, France
| | - Laurence Drouard
- Institut de Biologie Moléculaire des Plantes - CNRS, Université de Strasbourg, 12 rue du général Zimmer, F-67084, Strasbourg, France
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Zheng M, Song Y, Wang L, Yang D, Yan J, Sun Y, Hsu YF. CaRH57, a RNA helicase, contributes pepper tolerance to heat stress. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 205:108202. [PMID: 37995575 DOI: 10.1016/j.plaphy.2023.108202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 10/19/2023] [Accepted: 11/16/2023] [Indexed: 11/25/2023]
Abstract
RNA helicases (RHs) are required for most aspects of RNA metabolism and play an important role in plant stress tolerance. Heat stress (HS) causes the deleterious effects on plant cells, such as membrane disruption and protein misfolding, which results in the inhibition of plant growth and development. In this study, CaRH57 was identified from pepper (Capsicum annuum) and encodes a DEAD-box RH. CaRH57 was induced by HS, and overexpression of CaRH57 in Atrh57-1 rescued the glucose-sensitive phenotype of Atrh57-1, suggesting the functional replacement of CaRH57 to AtRH57. The nucleolus-localized CaRH57 possessed a RH activity in vitro. CaRH57 knockdown impaired pepper heat tolerance, showing severe necrosis and enhanced ROS accumulation in the region of the shoot tip. Additionally, accumulation of aberrant-spliced CaHSFA1d and CaHSFA9d was enhanced, and the corresponding mature mRNA levels were reduced in the TRV2 (Tobacco rattle virus)-CaRH57-infected plants compared with the control plants under HS. Overall, these results suggested that CaRH57 acted as a RH to confer pepper heat tolerance and was required for the proper pre-mRNA splicing of some HS-related genes.
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Affiliation(s)
- Min Zheng
- School of Life Sciences, Southwest University, Chongqing, China.
| | - Yu Song
- School of Life Sciences, Southwest University, Chongqing, China
| | - Lingyu Wang
- School of Life Sciences, Southwest University, Chongqing, China
| | - Dandan Yang
- School of Life Sciences, Southwest University, Chongqing, China
| | - Jiawen Yan
- School of Life Sciences, Southwest University, Chongqing, China
| | - Yutao Sun
- School of Life Sciences, Southwest University, Chongqing, China
| | - Yi-Feng Hsu
- School of Life Sciences, Southwest University, Chongqing, China.
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3
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Monti MM, Mancini I, Gualtieri L, Domingo G, Beccaccioli M, Bossa R, Bracale M, Loreto F, Ruocco M. Volatilome and proteome responses to Colletotrichum lindemuthianum infection in a moderately resistant and a susceptible bean genotype. PHYSIOLOGIA PLANTARUM 2023; 175:e14044. [PMID: 37882283 DOI: 10.1111/ppl.14044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 09/07/2023] [Accepted: 10/02/2023] [Indexed: 10/27/2023]
Abstract
We analyzed the changes in the volatilome, proteome, stomatal conductance, salicylic and jasmonic acid contents of a susceptible and a moderately resistant genotype of common bean, Phaseoulus vulgaris L., challenged with Colletotrichum lindemuthianum, the causal agent of fungal anthracnose. Our results indicate differences at both proteome and volatilome levels between the two genotypes, before and after the infection, and different defense strategies. The moderately resistant genotype hindered pathogen infection, invasion, and replication mainly by maintaining epidermal and cell wall structure. The susceptible genotype was not able to limit the early stages of pathogen infection. Rather, stomatal conductance increased in the infected susceptible genotype, and enhanced synthesis of Green Leaf Volatiles and salicylic acid was observed, together with a strong hypersensitive response. Proteomic investigation provided a general framework for physiological changes, whereas observed variations in the volatilome suggested that volatile organic compounds may principally represent stress markers rather than defensive compounds per se.
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Affiliation(s)
- Maurilia M Monti
- Istituto per la Protezione Sostenibile delle Piante, CNR, Portici, Napoli, Italy
| | - Ilaria Mancini
- Dipartimento di Biotecnologie e Scienze della Vita, Università degli Studi dell'Insubria, Varese, Italy
| | - Liberata Gualtieri
- Istituto per la Protezione Sostenibile delle Piante, CNR, Portici, Napoli, Italy
| | - Guido Domingo
- Dipartimento di Biotecnologie e Scienze della Vita, Università degli Studi dell'Insubria, Varese, Italy
| | - Marzia Beccaccioli
- Dipartimento di Biologia Ambientale, Università Sapienza Roma, Roma, Italy
| | - Rosanna Bossa
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Naples, Italy
| | - Marcella Bracale
- Dipartimento di Biotecnologie e Scienze della Vita, Università degli Studi dell'Insubria, Varese, Italy
| | - Francesco Loreto
- Istituto per la Protezione Sostenibile delle Piante, CNR, Portici, Napoli, Italy
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Naples, Italy
| | - Michelina Ruocco
- Istituto per la Protezione Sostenibile delle Piante, CNR, Portici, Napoli, Italy
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Mierzejewska J, Kowalska P, Marlicka K, Dworakowska S, Sitkiewicz E, Trzaskowski M, Głuchowska A, Mosieniak G, Milner-Krawczyk M. Exploring Extracellular Vesicles of Probiotic Yeast as Carriers of Biologically Active Molecules Transferred to Human Intestinal Cells. Int J Mol Sci 2023; 24:11340. [PMID: 37511103 PMCID: PMC10379187 DOI: 10.3390/ijms241411340] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 07/04/2023] [Accepted: 07/09/2023] [Indexed: 07/30/2023] Open
Abstract
Extracellular vesicles (EVs) are nanoparticles containing various bioactive cargos-e.g., proteins, RNAs, and lipids-that are released into the environment by all cell types. They are involved in, amongst other functions, intercellular communication. This article presents studies on EVs produced by the probiotic yeast Saccharomyces boulardii CNCM I-745. The size distribution and concentration of EVs in the liquid culture of yeast were estimated. Moreover, the vesicles of S. boulardii were tested for their cytotoxicity against three model human intestinal cell lines. This study did not show any significant negative effect of yeast EVs on these cells under tested conditions. In addition, EVs of S. boulardii were verified for their ability to internalize in vitro with human cells and transfer their cargo. The yeast vesicles were loaded with doxorubicin, an anticancer agent, and added to the cellular cultures. Subsequently, microscopic observations revealed that these EVs transferred the compound to human intestinal cell lines. A cytotoxicity test confirmed the activity of the transferred doxorubicin. Detailed information about the proteins present in EVs might be important in terms of exploring yeast EVs as carriers of active molecules. Thus, proteomic analysis of the EV content was also conducted within the present study, and it allowed the identification of 541 proteins after matching them to the Saccharomyces Genome Database (SGD). Altogether, this study provides strong evidence that the EVs of the probiotic CNCM I-745 strain could be considered a drug delivery system.
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Affiliation(s)
- Jolanta Mierzejewska
- Chair of Drug and Cosmetics Biotechnology, Faculty of Chemistry, Warsaw University of Technology, 00-664 Warsaw, Poland
| | - Patrycja Kowalska
- Chair of Drug and Cosmetics Biotechnology, Faculty of Chemistry, Warsaw University of Technology, 00-664 Warsaw, Poland
| | - Klaudia Marlicka
- Chair of Drug and Cosmetics Biotechnology, Faculty of Chemistry, Warsaw University of Technology, 00-664 Warsaw, Poland
| | - Sara Dworakowska
- Chair of Drug and Cosmetics Biotechnology, Faculty of Chemistry, Warsaw University of Technology, 00-664 Warsaw, Poland
| | - Ewa Sitkiewicz
- Mass Spectrometry Laboratory, Institute of Biophysics and Biochemistry, Polish Academy of Science, 02-106 Warsaw, Poland
| | - Maciej Trzaskowski
- Center for Advanced Materials and Technology, Warsaw University of Technology, 02-822 Warsaw, Poland
| | - Agata Głuchowska
- Nencki Institute of Experimental Biology, Polish Academy of Science, 02-093 Warsaw, Poland
| | - Grażyna Mosieniak
- Nencki Institute of Experimental Biology, Polish Academy of Science, 02-093 Warsaw, Poland
| | - Małgorzata Milner-Krawczyk
- Chair of Drug and Cosmetics Biotechnology, Faculty of Chemistry, Warsaw University of Technology, 00-664 Warsaw, Poland
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Ryan CS, Schröder M. The human DEAD-box helicase DDX3X as a regulator of mRNA translation. Front Cell Dev Biol 2022; 10:1033684. [PMID: 36393867 PMCID: PMC9642913 DOI: 10.3389/fcell.2022.1033684] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 10/07/2022] [Indexed: 08/27/2023] Open
Abstract
The human DEAD-box protein DDX3X is an RNA remodelling enzyme that has been implicated in various aspects of RNA metabolism. In addition, like many DEAD-box proteins, it has non-conventional functions that are independent of its enzymatic activity, e.g., DDX3X acts as an adaptor molecule in innate immune signalling pathways. DDX3X has been linked to several human diseases. For example, somatic mutations in DDX3X were identified in various human cancers, and de novo germline mutations cause a neurodevelopmental condition now termed 'DDX3X syndrome'. DDX3X is also an important host factor in many different viral infections, where it can have pro-or anti-viral effects depending on the specific virus. The regulation of translation initiation for specific mRNA transcripts is likely a central cellular function of DDX3X, yet many questions regarding its exact targets and mechanisms of action remain unanswered. In this review, we explore the current knowledge about DDX3X's physiological RNA targets and summarise its interactions with the translation machinery. A role for DDX3X in translational reprogramming during cellular stress is emerging, where it may be involved in the regulation of stress granule formation and in mediating non-canonical translation initiation. Finally, we also discuss the role of DDX3X-mediated translation regulation during viral infections. Dysregulation of DDX3X's function in mRNA translation likely contributes to its involvement in disease pathophysiology. Thus, a better understanding of its exact mechanisms for regulating translation of specific mRNA targets is important, so that we can potentially develop therapeutic strategies for overcoming the negative effects of its dysregulation.
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Bunyaviral N Proteins Localize at RNA Processing Bodies and Stress Granules: The Enigma of Cytoplasmic Sources of Capped RNA for Cap Snatching. Viruses 2022; 14:v14081679. [PMID: 36016301 PMCID: PMC9414089 DOI: 10.3390/v14081679] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/18/2022] [Accepted: 07/26/2022] [Indexed: 11/17/2022] Open
Abstract
Most cytoplasmic-replicating negative-strand RNA viruses (NSVs) initiate genome transcription by cap snatching. The source of host mRNAs from which the cytoplasmic NSVs snatch capped-RNA leader sequences has remained elusive. Earlier reports have pointed towards cytoplasmic-RNA processing bodies (P body, PB), although several questions have remained unsolved. Here, the nucleocapsid (N) protein of plant- and animal-infecting members of the order Bunyavirales, in casu Tomato spotted wilt virus (TSWV), Rice stripe virus (RSV), Sin nombre virus (SNV), Crimean-Congo hemorrhagic fever virus (CCHFV) and Schmallenberg virus (SBV) have been expressed and localized in cells of their respective plant and animal hosts. All N proteins localized to PBs as well as stress granules (SGs), but extensively to docking stages of PB and SG. TSWV and RSV N proteins also co-localized with Ran GTPase-activating protein 2 (RanGAP2), a nucleo-cytoplasmic shuttling factor, in the perinuclear region, and partly in the nucleus when co-expressed with its WPP domain containing a nuclear-localization signal. Upon silencing of PB and SG components individually or concomitantly, replication levels of a TSWV minireplicon, as measured by the expression of a GFP reporter gene, ranged from a 30% reduction to a four-fold increase. Upon the silencing of RanGAP homologs in planta, replication of the TSWV minireplicon was reduced by 75%. During in vivo cap-donor competition experiments, TSWV used transcripts destined to PB and SG, but also functional transcripts engaged in translation. Altogether, the results implicate a more complex situation in which, besides PB, additional cytoplasmic sources are used during transcription/cap snatching of cytoplasmic-replicating and segmented NSVs.
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Mokdadi M, Abdelkrim YZ, Banroques J, Huvelle E, Oualha R, Yeter-Alat H, Guizani I, Barhoumi M, Tanner NK. The In Silico Identification of Potential Members of the Ded1/DDX3 Subfamily of DEAD-Box RNA Helicases from the Protozoan Parasite Leishmania infantum and Their Analyses in Yeast. Genes (Basel) 2021; 12:212. [PMID: 33535521 PMCID: PMC7912733 DOI: 10.3390/genes12020212] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 01/27/2021] [Accepted: 01/29/2021] [Indexed: 12/14/2022] Open
Abstract
DEAD-box RNA helicases are ubiquitous proteins found in all kingdoms of life and that are associated with all processes involving RNA. Their central roles in biology make these proteins potential targets for therapeutic or prophylactic drugs. The Ded1/DDX3 subfamily of DEAD-box proteins is of particular interest because of their important role(s) in translation. In this paper, we identified and aligned the protein sequences of 28 different DEAD-box proteins from the kinetoplast-protozoan parasite Leishmania infantum, which is the cause of the visceral form of leishmaniasis that is often lethal if left untreated, and compared them with the consensus sequence derived from DEAD-box proteins in general, and from the Ded1/DDX3 subfamily in particular, from a wide variety of other organisms. We identified three potential homologs of the Ded1/DDX3 subfamily and the equivalent proteins from the related protozoan parasite Trypanosoma brucei, which is the causative agent of sleeping sickness. We subsequently tested these proteins for their ability to complement a yeast strain deleted for the essential DED1 gene. We found that the DEAD-box proteins from Trypanosomatids are highly divergent from other eukaryotes, and consequently they are suitable targets for protein-specific drugs.
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Affiliation(s)
- Molka Mokdadi
- Expression Génétique Microbienne, UMR8261 CNRS, Université de Paris, Institut de Biologie Physico-Chimique, 13 rue Pierre et Marie Curie, 75005 Paris, France; (M.M.); (Y.Z.A.); (J.B.); (E.H.); (H.Y.-A.)
- PSL Research University, 75005 Paris, France
- Laboratory of Molecular Epidemiology and Experimental Pathology (LR16IPT04), Institut Pasteur de Tunis, Université de Tunis El Manar, 13 Place Pasteur, BP74 Tunis-Belvédère 1002, Tunisia; (R.O.); (I.G.)
- Institut National des Sciences Appliquées et Technologies, Université de Carthage, CEDEX, Tunis 1080, Tunisia
| | - Yosser Zina Abdelkrim
- Expression Génétique Microbienne, UMR8261 CNRS, Université de Paris, Institut de Biologie Physico-Chimique, 13 rue Pierre et Marie Curie, 75005 Paris, France; (M.M.); (Y.Z.A.); (J.B.); (E.H.); (H.Y.-A.)
- Laboratory of Molecular Epidemiology and Experimental Pathology (LR16IPT04), Institut Pasteur de Tunis, Université de Tunis El Manar, 13 Place Pasteur, BP74 Tunis-Belvédère 1002, Tunisia; (R.O.); (I.G.)
| | - Josette Banroques
- Expression Génétique Microbienne, UMR8261 CNRS, Université de Paris, Institut de Biologie Physico-Chimique, 13 rue Pierre et Marie Curie, 75005 Paris, France; (M.M.); (Y.Z.A.); (J.B.); (E.H.); (H.Y.-A.)
- PSL Research University, 75005 Paris, France
| | - Emmeline Huvelle
- Expression Génétique Microbienne, UMR8261 CNRS, Université de Paris, Institut de Biologie Physico-Chimique, 13 rue Pierre et Marie Curie, 75005 Paris, France; (M.M.); (Y.Z.A.); (J.B.); (E.H.); (H.Y.-A.)
- PSL Research University, 75005 Paris, France
| | - Rafeh Oualha
- Laboratory of Molecular Epidemiology and Experimental Pathology (LR16IPT04), Institut Pasteur de Tunis, Université de Tunis El Manar, 13 Place Pasteur, BP74 Tunis-Belvédère 1002, Tunisia; (R.O.); (I.G.)
| | - Hilal Yeter-Alat
- Expression Génétique Microbienne, UMR8261 CNRS, Université de Paris, Institut de Biologie Physico-Chimique, 13 rue Pierre et Marie Curie, 75005 Paris, France; (M.M.); (Y.Z.A.); (J.B.); (E.H.); (H.Y.-A.)
- PSL Research University, 75005 Paris, France
| | - Ikram Guizani
- Laboratory of Molecular Epidemiology and Experimental Pathology (LR16IPT04), Institut Pasteur de Tunis, Université de Tunis El Manar, 13 Place Pasteur, BP74 Tunis-Belvédère 1002, Tunisia; (R.O.); (I.G.)
| | - Mourad Barhoumi
- Laboratory of Molecular Epidemiology and Experimental Pathology (LR16IPT04), Institut Pasteur de Tunis, Université de Tunis El Manar, 13 Place Pasteur, BP74 Tunis-Belvédère 1002, Tunisia; (R.O.); (I.G.)
| | - N. Kyle Tanner
- Expression Génétique Microbienne, UMR8261 CNRS, Université de Paris, Institut de Biologie Physico-Chimique, 13 rue Pierre et Marie Curie, 75005 Paris, France; (M.M.); (Y.Z.A.); (J.B.); (E.H.); (H.Y.-A.)
- PSL Research University, 75005 Paris, France
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Urquidi-Camacho RA, Lokdarshi A, von Arnim AG. Translational gene regulation in plants: A green new deal. WILEY INTERDISCIPLINARY REVIEWS. RNA 2020; 11:e1597. [PMID: 32367681 PMCID: PMC9258721 DOI: 10.1002/wrna.1597] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 03/31/2020] [Accepted: 04/01/2020] [Indexed: 01/09/2023]
Abstract
The molecular machinery for protein synthesis is profoundly similar between plants and other eukaryotes. Mechanisms of translational gene regulation are embedded into the broader network of RNA-level processes including RNA quality control and RNA turnover. However, over eons of their separate history, plants acquired new components, dropped others, and generally evolved an alternate way of making the parts list of protein synthesis work. Research over the past 5 years has unveiled how plants utilize translational control to defend themselves against viruses, regulate translation in response to metabolites, and reversibly adjust translation to a wide variety of environmental parameters. Moreover, during seed and pollen development plants make use of RNA granules and other translational controls to underpin developmental transitions between quiescent and metabolically active stages. The economics of resource allocation over the daily light-dark cycle also include controls over cellular protein synthesis. Important new insights into translational control on cytosolic ribosomes continue to emerge from studies of translational control mechanisms in viruses. Finally, sketches of coherent signaling pathways that connect external stimuli with a translational response are emerging, anchored in part around TOR and GCN2 kinase signaling networks. These again reveal some mechanisms that are familiar and others that are different from other eukaryotes, motivating deeper studies on translational control in plants. This article is categorized under: Translation > Translation Regulation RNA Structure and Dynamics > Influence of RNA Structure in Biological Systems RNA Interactions with Proteins and Other Molecules > Protein-RNA Interactions: Functional Implications.
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Affiliation(s)
- Ricardo A. Urquidi-Camacho
- UT-ORNL Graduate School of Genome Science and Technology, The University of Tennessee, Knoxville, TN 37996
| | - Ansul Lokdarshi
- Department of Biochemistry & Cellular and Molecular Biology, University of Tennessee, Knoxville, TN 37996
| | - Albrecht G von Arnim
- Department of Biochemistry & Cellular and Molecular Biology and UT-ORNL Graduate School of Genome Science and Technology, University of Tennessee, Knoxville, TN 37996
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Merret R, Bousquet-Antonelli C. Immunity gate-keepers. NATURE PLANTS 2020; 6:608-609. [PMID: 32483331 DOI: 10.1038/s41477-020-0679-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Affiliation(s)
- Rémy Merret
- CNRS-UMR5096, Plant Genome and Development Laboratory, Perpignan, France
- UPVD-UMR5096, Plant Genome and Development Laboratory, Perpignan, France
| | - Cécile Bousquet-Antonelli
- CNRS-UMR5096, Plant Genome and Development Laboratory, Perpignan, France.
- UPVD-UMR5096, Plant Genome and Development Laboratory, Perpignan, France.
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Chantarachot T, Sorenson RS, Hummel M, Ke H, Kettenburg AT, Chen D, Aiyetiwa K, Dehesh K, Eulgem T, Sieburth LE, Bailey-Serres J. DHH1/DDX6-like RNA helicases maintain ephemeral half-lives of stress-response mRNAs. NATURE PLANTS 2020; 6:675-685. [PMID: 32483330 DOI: 10.1038/s41477-020-0681-8] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 04/29/2020] [Indexed: 05/21/2023]
Abstract
Gene transcription is counterbalanced by messenger RNA decay processes that regulate transcript quality and quantity. We show here that the evolutionarily conserved DHH1/DDX6-like RNA hellicases of Arabidopsis thaliana control the ephemerality of a subset of cellular mRNAs. These RNA helicases co-localize with key markers of processing bodies and stress granules and contribute to their subcellular dynamics. They function to limit the precocious accumulation and ribosome association of stress-responsive mRNAs involved in auto-immunity and growth inhibition under non-stress conditions. Given the conservation of this RNA helicase subfamily, they may control basal levels of conditionally regulated mRNAs in diverse eukaryotes, accelerating responses without penalty.
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Affiliation(s)
- Thanin Chantarachot
- Center for Plant Cell Biology, Department of Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA
| | - Reed S Sorenson
- School of Biological Sciences, University of Utah, Salt Lake City, UT, USA
| | - Maureen Hummel
- Center for Plant Cell Biology, Department of Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA
| | - Haiyan Ke
- Center for Plant Cell Biology, Department of Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA
| | - Alek T Kettenburg
- Center for Plant Cell Biology, Department of Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA
| | - Daniel Chen
- Center for Plant Cell Biology, Department of Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA
| | - Karen Aiyetiwa
- Center for Plant Cell Biology, Department of Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA
| | - Katayoon Dehesh
- Center for Plant Cell Biology, Department of Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA
| | - Thomas Eulgem
- Center for Plant Cell Biology, Department of Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA
| | - Leslie E Sieburth
- School of Biological Sciences, University of Utah, Salt Lake City, UT, USA
| | - Julia Bailey-Serres
- Center for Plant Cell Biology, Department of Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA.
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