You are invited to attend “Protein Persulfidation in Guard Cell ABA Signaling” ON January 25, 2024
You are receiving this e-mail because you subscribed to our seminars announcements and reminders service at [ https://maillist.psb.ugent.be/mailman/listinfo/seminars | https://maillist.psb.ugent.be/mailman/listinfo/seminars ] . “Protein Persulfidation in Guard Cell ABA Signaling” Prof Yanjie Xie Laboratory Center of Life Sciences College of Life Sciences Nanjing Agricultural University CHINA Thursday, January 25, 2024 11:00 Hydrogen sulfide ( H 2 S ) is a gaseous signaling molecule that regulates diverse cellular signaling pathways through persulfidation, which involves the post-translational modification of specific cysteine residues to form persulfides. However, the mechanisms that underlie this important redox-based modification remain poorly understood in higher plants. We have, therefore, analyzed how protein persulfidation acts as a specific and reversible signaling mechanism during the abscisic acid (ABA) response in Arabidopsis thaliana. We show that ABA stimulates the persulfidation of L-CYSTEINE DESULFHYDRASE 1 (DES1), an important endogenous H2S enzyme, at Cys44 and Cys205 in a redox-dependent manner. Moreover, sustainable H2S accumulation drives persulfidation of the NADPH oxidase RESPIRATORY BURST OXIDASE HOMOLOG PROTEIN D (RBOHD) at Cys825 and Cys890, enhancing its ability to produce reactive oxygen species. Physiologically, S-persulfidation-induced RBOHD activity is relevant to ABA-induced stomatal closure. Together, these processes form a negative feedback loop that fine-tunes guard cell redox homeostasis and ABA signaling. These findings not only expand our current knowledge of H2S function in the context of guard cell ABA signaling, but also demonstrate the presence of a rapid signal integration mechanism involving specific and reversible redox-based post-translational modifications that occur in response to changing environmental conditions. Jozef Schell seminar room Technologiepark 71 - 9052 Invited by Prof Yves Van de Peer and Prof Frank Van Breusegem If you do not wish to receive this information anymore, please unsubscribe from future mailings at [ https://maillist.psb.ugent.be/mailman/listinfo/seminars | https://maillist.psb.ugent.be/mailman/listinfo/seminars ] Genome editing, cutting-edge technology for a sustainable agriculture VIB-UGent Center for Plant Systems Biology Ghent University Technologiepark-Zwijnaarde 71 9052 Ghent-Belgium Phone: +32(0)9 331 38 00 [ http://www.psb.vib-ugent.be/ | https://www.psb.ugent.be/ ]
You are receiving this e-mail because you subscribed to our seminars announcements and reminders service at [ https://maillist.psb.ugent.be/mailman/listinfo/seminars | https://maillist.psb.ugent.be/mailman/listinfo/seminars ] . “ Harnessing plant metabolic diversity for food and health applications ” Prof Anne Osbourn John Innes Centre UNITED KINGDOM Thursday, February 22, 2024 11:00 Plants produce a wealth of natural products. The vast majority of the natural product diversity encoded by plant genomes remains as yet untapped. The explosion in plant genome sequence data, coupled with affordable DNA synthesis and new DNA assembly technologies, now offer unprecedented opportunities to harness the full breadth of plant natural product diversity and generate novel molecules in foreign hosts using synthetic biology approaches. The recent discovery that genes for the synthesis of different kinds of natural products are organised in biosynthetic gene clusters in plant genomes opens up opportunities for mining for new pathways and chemistries. This advance, in combination with powerful new transient plant expression technology, is enabling the development of rational strategies to produce known and new-to-nature chemicals tailored for food, health and industrial applications. This presentation will focus on our work on developing a translational synthetic biology pipeline for rapid preparative access to plant natural products and novel analogs using synthetic biology approaches, focusing in particular on the elucidation of the pathway for saponin vaccine adjuvants from the Chilean soapbark tree. Our results enable for the first time the production of soapbark vaccine adjuvants in a heterologous expression system and open the way for new routes to access and engineer natural and new-to-nature immunostimulants. Jozef Schell seminar room Technologiepark 71 - 9052 Invited by Prof Yves Van de Peer and Prof Alain Goossens If you do not wish to receive this information anymore, please unsubscribe from future mailings at [ https://maillist.psb.ugent.be/mailman/listinfo/seminars | https://maillist.psb.ugent.be/mailman/listinfo/seminars ] Genome editing, cutting-edge technology for a sustainable agriculture VIB-UGent Center for Plant Systems Biology Ghent University Technologiepark-Zwijnaarde 71 9052 Ghent-Belgium Phone: +32(0)9 331 38 00 [ http://www.psb.vib-ugent.be/ | https://www.psb.ugent.be/ ]
You are receiving this e-mail because you subscribed to our seminars announcements and reminders service at [ https://maillist.psb.ugent.be/mailman/listinfo/seminars | https://maillist.psb.ugent.be/mailman/listinfo/seminars ] . “ Activation and regulation of plant immunity by secreted signaling peptides ” Prof Cyril Zipfel Molecular and Cellular Plant Physiology Institute of Plant and Microbial Biology University of Zurich SWITZERLAND Thursday, February 29, 2024 11:00 Cyril Zipfel a,b a Institute of Plant and Microbial Biology, Zürich-Basel Plant Science Center, University of Zürich, 8008 Zürich, Switzerland. b The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, United Kingdom. Plant immunity relies on both cell-surface and intracellular immune receptors. In particular, receptor kinases act as pattern recognition receptors that sense microbial and host-derived molecular patterns. Part of this first-line immune response involves the dynamic production of immuno-modulatory secreted signaling peptides, termed phytocytokines. I will present our recent work on phytocytokines, their perception mechanisms, and their potential functions as both regulators and executioners of plant immunity. Jozef Schell seminar room Technologiepark 71 - 9052 Invited by Prof Yves Van de Peer, Prof Bert De Rybel, Prof Tom Beeckman, Prof Van Daniël Van Damme and Prof Jenny Russinova If you do not wish to receive this information anymore, please unsubscribe from future mailings at [ https://maillist.psb.ugent.be/mailman/listinfo/seminars | https://maillist.psb.ugent.be/mailman/listinfo/seminars ] Genome editing, cutting-edge technology for a sustainable agriculture VIB-UGent Center for Plant Systems Biology Ghent University Technologiepark-Zwijnaarde 71 9052 Ghent-Belgium Phone: +32(0)9 331 38 00 [ http://www.psb.vib-ugent.be/ | https://www.psb.ugent.be/ ]
REMINDER Van: "Delphine Verspeel" <delphine.verspeel@psb.vib-ugent.be> Aan: "meetings" <meetings@psb.vib-ugent.be> Verzonden: Vrijdag 19 januari 2024 17:56:18 Onderwerp: You are invited to attend “Activation and regulation of plant immunity by secreted signaling peptides” ON February 29, 2024 You are receiving this e-mail because you subscribed to our seminars announcements and reminders service at [ https://maillist.psb.ugent.be/mailman/listinfo/seminars | https://maillist.psb.ugent.be/mailman/listinfo/seminars ] . “ Activation and regulation of plant immunity by secreted signaling peptides ” Prof Cyril Zipfel Molecular and Cellular Plant Physiology Institute of Plant and Microbial Biology University of Zurich SWITZERLAND Thursday, February 29, 2024 11:00 Cyril Zipfel a,b a Institute of Plant and Microbial Biology, Zürich-Basel Plant Science Center, University of Zürich, 8008 Zürich, Switzerland. b The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, United Kingdom. Plant immunity relies on both cell-surface and intracellular immune receptors. In particular, receptor kinases act as pattern recognition receptors that sense microbial and host-derived molecular patterns. Part of this first-line immune response involves the dynamic production of immuno-modulatory secreted signaling peptides, termed phytocytokines. I will present our recent work on phytocytokines, their perception mechanisms, and their potential functions as both regulators and executioners of plant immunity. Jozef Schell seminar room Technologiepark 71 - 9052 Invited by Prof Yves Van de Peer, Prof Bert De Rybel, Prof Tom Beeckman, Prof Van Daniël Van Damme and Prof Jenny Russinova If you do not wish to receive this information anymore, please unsubscribe from future mailings at [ https://maillist.psb.ugent.be/mailman/listinfo/seminars | https://maillist.psb.ugent.be/mailman/listinfo/seminars ] Genome editing, cutting-edge technology for a sustainable agriculture VIB-UGent Center for Plant Systems Biology Ghent University Technologiepark-Zwijnaarde 71 9052 Ghent-Belgium Phone: +32(0)9 331 38 00 [ http://www.psb.vib-ugent.be/ | https://www.psb.ugent.be/ ]
You are receiving this e-mail because you subscribed to our seminars announcements and reminders service at [ https://maillist.psb.ugent.be/mailman/listinfo/seminars | https://maillist.psb.ugent.be/mailman/listinfo/seminars ] . “ Molecular path into plant cellular reprogramming” Prof Keiko Sugimoto RIKEN Center for Sustainable Resource Science JAPAN & Department of Biological Sciences Graduate School of Science The University of Tokyo JAPAN Thursday, February 8, 2024 11:00 Plants display remarkable developmental plasticity and regenerate new tissues and/or organs after injury. Local signals produced by wounding trigger cellular reprogramming in regeneration but molecular mechanisms underlying this control remain poorly understood. We investigate how wound stress activates new transcription to initiate cell fate reprogramming and how chromatin-based mechanisms modulate these transcriptional changes. A group of AP2/ERF transcription factors named WOUND INDUCED DEDIFFERENTIATION1-4 (WIND1-4) act as central regulators of wound-induced cellular reprogramming and our recent work demonstrated that WINDs activate a diverse set of genes to protect and rebuild plant tissues after injury. We have also shown that wounding induces dynamic changes in histone acetylation status to modify gene expression. In this talk I will discuss our latest findings on how histone acetylation and deacetylation modulate gene expression to reprogramme cell fate in regeneration. Jozef Schell seminar room Technologiepark 71 - 9052 Invited by Prof Yves Van de Peer and Prof Lieven De Veylder If you do not wish to receive this information anymore, please unsubscribe from future mailings at [ https://maillist.psb.ugent.be/mailman/listinfo/seminars | https://maillist.psb.ugent.be/mailman/listinfo/seminars ] Genome editing, cutting-edge technology for a sustainable agriculture VIB-UGent Center for Plant Systems Biology Ghent University Technologiepark-Zwijnaarde 71 9052 Ghent-Belgium Phone: +32(0)9 331 38 00 [ http://www.psb.vib-ugent.be/ | https://www.psb.ugent.be/ ]
REMINDER Van: "Delphine Verspeel" <delphine.verspeel@psb.vib-ugent.be> Aan: "meetings" <meetings@psb.vib-ugent.be> Verzonden: Maandag 22 januari 2024 11:17:21 Onderwerp: You are invited to attend “Molecular path into plant cellular reprogramming” ON February 8, 2024 You are receiving this e-mail because you subscribed to our seminars announcements and reminders service at [ https://maillist.psb.ugent.be/mailman/listinfo/seminars | https://maillist.psb.ugent.be/mailman/listinfo/seminars ] . “ Molecular path into plant cellular reprogramming” Prof Keiko Sugimoto RIKEN Center for Sustainable Resource Science JAPAN & Department of Biological Sciences Graduate School of Science The University of Tokyo JAPAN Thursday, February 8, 2024 11:00 Plants display remarkable developmental plasticity and regenerate new tissues and/or organs after injury. Local signals produced by wounding trigger cellular reprogramming in regeneration but molecular mechanisms underlying this control remain poorly understood. We investigate how wound stress activates new transcription to initiate cell fate reprogramming and how chromatin-based mechanisms modulate these transcriptional changes. A group of AP2/ERF transcription factors named WOUND INDUCED DEDIFFERENTIATION1-4 (WIND1-4) act as central regulators of wound-induced cellular reprogramming and our recent work demonstrated that WINDs activate a diverse set of genes to protect and rebuild plant tissues after injury. We have also shown that wounding induces dynamic changes in histone acetylation status to modify gene expression. In this talk I will discuss our latest findings on how histone acetylation and deacetylation modulate gene expression to reprogramme cell fate in regeneration. Jozef Schell seminar room Technologiepark 71 - 9052 Invited by Prof Yves Van de Peer and Prof Lieven De Veylder If you do not wish to receive this information anymore, please unsubscribe from future mailings at [ https://maillist.psb.ugent.be/mailman/listinfo/seminars | https://maillist.psb.ugent.be/mailman/listinfo/seminars ] Genome editing, cutting-edge technology for a sustainable agriculture VIB-UGent Center for Plant Systems Biology Ghent University Technologiepark-Zwijnaarde 71 9052 Ghent-Belgium Phone: +32(0)9 331 38 00 [ http://www.psb.vib-ugent.be/ | https://www.psb.ugent.be/ ]
REMINDER Van: "Delphine Verspeel" <delphine.verspeel@psb.vib-ugent.be> Aan: "meetings" <meetings@psb.vib-ugent.be> Verzonden: Vrijdag 19 januari 2024 17:18:04 Onderwerp: You are invited to attend “Harnessing plant metabolic diversity for food and health applications” ON February 22, 2024 You are receiving this e-mail because you subscribed to our seminars announcements and reminders service at [ https://maillist.psb.ugent.be/mailman/listinfo/seminars | https://maillist.psb.ugent.be/mailman/listinfo/seminars ] . “ Harnessing plant metabolic diversity for food and health applications ” Prof Anne Osbourn John Innes Centre UNITED KINGDOM Thursday, February 22, 2024 11:00 Plants produce a wealth of natural products. The vast majority of the natural product diversity encoded by plant genomes remains as yet untapped. The explosion in plant genome sequence data, coupled with affordable DNA synthesis and new DNA assembly technologies, now offer unprecedented opportunities to harness the full breadth of plant natural product diversity and generate novel molecules in foreign hosts using synthetic biology approaches. The recent discovery that genes for the synthesis of different kinds of natural products are organised in biosynthetic gene clusters in plant genomes opens up opportunities for mining for new pathways and chemistries. This advance, in combination with powerful new transient plant expression technology, is enabling the development of rational strategies to produce known and new-to-nature chemicals tailored for food, health and industrial applications. This presentation will focus on our work on developing a translational synthetic biology pipeline for rapid preparative access to plant natural products and novel analogs using synthetic biology approaches, focusing in particular on the elucidation of the pathway for saponin vaccine adjuvants from the Chilean soapbark tree. Our results enable for the first time the production of soapbark vaccine adjuvants in a heterologous expression system and open the way for new routes to access and engineer natural and new-to-nature immunostimulants. Jozef Schell seminar room Technologiepark 71 - 9052 Invited by Prof Yves Van de Peer and Prof Alain Goossens If you do not wish to receive this information anymore, please unsubscribe from future mailings at [ https://maillist.psb.ugent.be/mailman/listinfo/seminars | https://maillist.psb.ugent.be/mailman/listinfo/seminars ] Genome editing, cutting-edge technology for a sustainable agriculture VIB-UGent Center for Plant Systems Biology Ghent University Technologiepark-Zwijnaarde 71 9052 Ghent-Belgium Phone: +32(0)9 331 38 00 [ http://www.psb.vib-ugent.be/ | https://www.psb.ugent.be/ ]
REMINDER Van: "Delphine Verspeel" <delphine.verspeel@psb.vib-ugent.be> Aan: "meetings" <meetings@psb.vib-ugent.be> Verzonden: Dinsdag 12 december 2023 17:14:36 Onderwerp: You are invited to attend “Protein Persulfidation in Guard Cell ABA Signaling” ON January 25, 2024 You are receiving this e-mail because you subscribed to our seminars announcements and reminders service at [ https://maillist.psb.ugent.be/mailman/listinfo/seminars | https://maillist.psb.ugent.be/mailman/listinfo/seminars ] . “Protein Persulfidation in Guard Cell ABA Signaling” Prof Yanjie Xie Laboratory Center of Life Sciences College of Life Sciences Nanjing Agricultural University CHINA Thursday, January 25, 2024 11:00 Hydrogen sulfide ( H 2 S ) is a gaseous signaling molecule that regulates diverse cellular signaling pathways through persulfidation, which involves the post-translational modification of specific cysteine residues to form persulfides. However, the mechanisms that underlie this important redox-based modification remain poorly understood in higher plants. We have, therefore, analyzed how protein persulfidation acts as a specific and reversible signaling mechanism during the abscisic acid (ABA) response in Arabidopsis thaliana. We show that ABA stimulates the persulfidation of L-CYSTEINE DESULFHYDRASE 1 (DES1), an important endogenous H2S enzyme, at Cys44 and Cys205 in a redox-dependent manner. Moreover, sustainable H2S accumulation drives persulfidation of the NADPH oxidase RESPIRATORY BURST OXIDASE HOMOLOG PROTEIN D (RBOHD) at Cys825 and Cys890, enhancing its ability to produce reactive oxygen species. Physiologically, S-persulfidation-induced RBOHD activity is relevant to ABA-induced stomatal closure. Together, these processes form a negative feedback loop that fine-tunes guard cell redox homeostasis and ABA signaling. These findings not only expand our current knowledge of H2S function in the context of guard cell ABA signaling, but also demonstrate the presence of a rapid signal integration mechanism involving specific and reversible redox-based post-translational modifications that occur in response to changing environmental conditions. Jozef Schell seminar room Technologiepark 71 - 9052 Invited by Prof Yves Van de Peer and Prof Frank Van Breusegem If you do not wish to receive this information anymore, please unsubscribe from future mailings at [ https://maillist.psb.ugent.be/mailman/listinfo/seminars | https://maillist.psb.ugent.be/mailman/listinfo/seminars ] Genome editing, cutting-edge technology for a sustainable agriculture VIB-UGent Center for Plant Systems Biology Ghent University Technologiepark-Zwijnaarde 71 9052 Ghent-Belgium Phone: +32(0)9 331 38 00 [ http://www.psb.vib-ugent.be/ | https://www.psb.ugent.be/ ]
participants (1)
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Delphine Verspeel