- Seminars - maillist.psb.ugent.be

Upcoming seminars May
by Delphine Verspeel 02 May '11

02 May '11

Dear All, Enclosed you can find our upcoming seminars for May. Kind regards, Delphine ____________________________________________ Delphine Verspeel Administrative Assistant VIB, Department of Plant Systems Biology Ghent University Technologiepark 927 9052 Gent Belgium Phone: +32/9/33.13.800 Fax: +32/33.13.809 <Http://www.psb.ugent.be> Http://www.psb.ugent.be <mailto:nahau@psb.vib-ugent.be> despe(a)psb.vib-ugent.be

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PSB event reminder
by contact＠psb.vib-ugent.be 29 Apr '11

29 Apr '11

Calendar Name: seminars Scheduled for: Friday, April 29 2011, 11:00 - 12:30 Event text: Prof Roman Ulm Department of Botany and Plant Biology University of Geneva Sciences III Geneva 4 SWITZERLAND Details: �UV-B perception and signalling in Arabidopsis� ABSTRACT To optimize their growth and survival, plants perceive and respond to UV-B radiation. However, neither the molecular identity of the UV-B photoreceptor nor the photoperception mechanism is known. An early molecular response to UV-B radiation involves the direct interaction between UVR8 and COP1, two key factors regulating UV-B-induced photomorphogenesis. This pathway secures plant acclimation to UV-B and thus endurance under sunlight. I will present our current understanding of COP1 and UVR8 function in UV-B perception and signalling.

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PSB event reminder
by contact＠psb.vib-ugent.be 27 Apr '11

27 Apr '11

Calendar Name: seminars Scheduled for: Friday, April 29 2011, 11:00 - 12:30 Event text: Prof Roman Ulm Department of Botany and Plant Biology University of Geneva Sciences III Geneva 4 SWITZERLAND Details: �UV-B perception and signalling in Arabidopsis� ABSTRACT To optimize their growth and survival, plants perceive and respond to UV-B radiation. However, neither the molecular identity of the UV-B photoreceptor nor the photoperception mechanism is known. An early molecular response to UV-B radiation involves the direct interaction between UVR8 and COP1, two key factors regulating UV-B-induced photomorphogenesis. This pathway secures plant acclimation to UV-B and thus endurance under sunlight. I will present our current understanding of COP1 and UVR8 function in UV-B perception and signalling.

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Seminar Prof Roman Ulm 29/04
by Delphine Verspeel 05 Apr '11

05 Apr '11

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. If you do not wish to receive this information anymore, please unsubscribe from future mailings at <https://maillist.psb.ugent.be/mailman/options/seminars> https://maillist.psb.ugent.be/mailman/options/seminars. cid:946540515@15122008-0D1C PSB cid:946540515@15122008-0D23 VIB - Department of Plant Systems Biology Technologiepark 927 B - 9052 Gent/Zwijnaarde Phone: +32 9 33 13 800 Fax: +32 9 33 13 809 Http://www.psb.vib-ugent.be

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PSB event reminder
by contact＠psb.vib-ugent.be 01 Apr '11

01 Apr '11

Calendar Name: seminars Scheduled for: Friday, April 1 2011, 14:00 - 15:30 Event text: Dr Jos� R. Dinneny Temasek Life Sciences Laboratory National University of Singapore SINGAPORE Details: �Towards a spatiotemporal understanding of environmental response in roots� ABSTRACT The response of plant roots to environmental change serves as an excellent model for understanding the dynamic regulation of gene expression in a multicellular context. To shed light on the spatiotemporal regulation of the salt stress response in roots, we are utilizing tools common to both developmental and systems biology. Our studies have revealed that the salt stress response is characterized by waves of transcriptional activity, which are associated with dynamic changes in morphology and growth rates. We have recently extended our interest of environmental responses into the role that moisture plays in locally regulating root growth and development. In a process we term �hydropatterning�, we have discovered that contact of the root tip with moisture elicits a cascade of changes in root development including the suppression of hair initiation, activation of lateral root development and changes in gravity response. The mechanisms for hydropatterning are currently being investigated and will be discussed during the seminar.

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PSB event reminder
by contact＠psb.vib-ugent.be 30 Mar '11

30 Mar '11

Calendar Name: seminars Scheduled for: Friday, April 1 2011, 14:00 - 15:30 Event text: Dr Jos� R. Dinneny Temasek Life Sciences Laboratory National University of Singapore SINGAPORE Details: �Towards a spatiotemporal understanding of environmental response in roots� ABSTRACT The response of plant roots to environmental change serves as an excellent model for understanding the dynamic regulation of gene expression in a multicellular context. To shed light on the spatiotemporal regulation of the salt stress response in roots, we are utilizing tools common to both developmental and systems biology. Our studies have revealed that the salt stress response is characterized by waves of transcriptional activity, which are associated with dynamic changes in morphology and growth rates. We have recently extended our interest of environmental responses into the role that moisture plays in locally regulating root growth and development. In a process we term �hydropatterning�, we have discovered that contact of the root tip with moisture elicits a cascade of changes in root development including the suppression of hair initiation, activation of lateral root development and changes in gravity response. The mechanisms for hydropatterning are currently being investigated and will be discussed during the seminar.

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Seminar Dr José R. Dinneny 01/04
by Delphine Verspeel 22 Mar '11

22 Mar '11

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. If you do not wish to receive this information anymore, please unsubscribe from future mailings at <https://maillist.psb.ugent.be/mailman/options/seminars> https://maillist.psb.ugent.be/mailman/options/seminars. cid:946540515@15122008-0D1C PSB cid:946540515@15122008-0D23 VIB - Department of Plant Systems Biology Technologiepark 927 B - 9052 Gent/Zwijnaarde Phone: +32 9 33 13 800 Fax: +32 9 33 13 809 Http://www.psb.vib-ugent.be

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Upcoming seminars April
by Delphine Verspeel 22 Mar '11

22 Mar '11

Dear All Enclosed you can find our upcoming seminars for April. Kind regards, Delphine ____________________________________________ Delphine Verspeel Administrative Assistant VIB, Department of Plant Systems Biology Ghent University Technologiepark 927 9052 Gent Belgium Phone: +32/9/33.13.800 Fax: +32/33.13.809 <Http://www.psb.ugent.be> Http://www.psb.ugent.be <mailto:nahau@psb.vib-ugent.be> despe(a)psb.vib-ugent.be

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PSB event reminder
by contact＠psb.vib-ugent.be 17 Mar '11

17 Mar '11

Calendar Name: seminars Scheduled for: Thursday, March 17 2011, 11:00 - 12:30 Event text: Dr John Runions Oxford Brookes University School of Life Sciences Oxford UK Details: "Plant cell membrane protein dynamics" ABSTRACT Cell membrane proteins play a key role in the ability of plants to sense and respond to their environments. We have been utilizing live-cell imaging techniques to study protein interactions within and across the plasma membrane. A clue to the way in which membrane proteins associate with each other is in the way in which they diffuse within the plasma membrane. Using photoactivation and photobleaching of fluorescent proteins, we have been able to determine that different types of proteins have differing mobility and we are now working to determine how protein conformation and insertion into membranes govern mobility characteristics. I will illustrate the technique that we have developed by describing three recent case studies. Plants regulate plasma membrane viscosity by altering their fatty acid composition in response to temperature fluctuations. We have determined, however, by examining diffusion of the membrane marker LTI6b-GFP that these alterations maintain homeostasis of membrane viscosity. Secondly, the plasma membrane protein formin1 is an actin cytoskeleton regulatory protein that remains relatively immobile and we have determined that it is anchored through association with the cell wall. This is the first report of a protein bridging between the cytoskeleton and the cell wall. Finally, a new study with colleagues at VIB, Gent has revealed that lateral mobility of PIN proteins and ultimately their asymmetrical distribution in polarized cells is controlled by interactions with the extracellular matrix. These findings should be of general interest to physiologists, cell biologists and developmental biologists alike. Understanding the mechanisms of protein associations at the cell membrane will be key to new discoveries in these fields.

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PSB event reminder
by contact＠psb.vib-ugent.be 15 Mar '11

15 Mar '11

Calendar Name: seminars Scheduled for: Thursday, March 17 2011, 11:00 - 12:30 Event text: Dr John Runions Oxford Brookes University School of Life Sciences Oxford UK Details: "Plant cell membrane protein dynamics" ABSTRACT Cell membrane proteins play a key role in the ability of plants to sense and respond to their environments. We have been utilizing live-cell imaging techniques to study protein interactions within and across the plasma membrane. A clue to the way in which membrane proteins associate with each other is in the way in which they diffuse within the plasma membrane. Using photoactivation and photobleaching of fluorescent proteins, we have been able to determine that different types of proteins have differing mobility and we are now working to determine how protein conformation and insertion into membranes govern mobility characteristics. I will illustrate the technique that we have developed by describing three recent case studies. Plants regulate plasma membrane viscosity by altering their fatty acid composition in response to temperature fluctuations. We have determined, however, by examining diffusion of the membrane marker LTI6b-GFP that these alterations maintain homeostasis of membrane viscosity. Secondly, the plasma membrane protein formin1 is an actin cytoskeleton regulatory protein that remains relatively immobile and we have determined that it is anchored through association with the cell wall. This is the first report of a protein bridging between the cytoskeleton and the cell wall. Finally, a new study with colleagues at VIB, Gent has revealed that lateral mobility of PIN proteins and ultimately their asymmetrical distribution in polarized cells is controlled by interactions with the extracellular matrix. These findings should be of general interest to physiologists, cell biologists and developmental biologists alike. Understanding the mechanisms of protein associations at the cell membrane will be key to new discoveries in these fields.

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