- Seminars - maillist.psb.ugent.be

PSB event reminder
by contact＠psb.vib-ugent.be 02 Sep '11

02 Sep '11

Calendar Name: seminars Scheduled for: Friday, September 2 2011, 14:00 - 15:30 Event text: Dr Martin Crespi Institut des Sciences V�g�tales CNRS Universit� Paris Gif sur Yvette/Paris FRANCE Details: �Impact of non-coding RNAs in root developmental plasticity� ABSTRACT Long non-protein coding RNAs (npcRNA) represent an emerging class of riboregulators, which act either directly in this long form or are processed to shorter miRNA and siRNAs. Plant and animals use small RNAs (microRNAs and siRNAs) as guide for post-transcriptional and epigenetic regulation. In plants, miRNAs and trans-acting siRNA (tasiRNA) result from different biogenesis pathways but both interact with target transcripts to direct their cleavage. Genome-wide bioinformatic analysis of full-length cDNA databases allowed us to identify 76 Arabidopsis long npcRNAs. Eleven npcRNAs were antisense to protein-coding mRNAs whereas certain corresponded to miRNA or siRNA precursors. In addition, numerous 24-nt siRNAs matched to five different npcRNAs. To link them to root developmental plasticity, we have shown that abiotic stresses and hormone treatments in roots altered the accumulation of 22 of these npcRNAs. Functional studies are ongoing to understand the regulatory mechanisms involving npcRNAs and their interacting RNA binding proteins in root tissues. We have identified an RNA-binding protein that interacts with an npcRNA that accumulates in nuclear �speckles� and controls auxin responses. In addition, one npcRNA expressed in root tissues corresponded to TAS3a, a tasiRNA precursor target of miR390. A feedback mechanism involving miR390/tasiRNAs and their ARF targets quantitatively controls lateral root emergence. Finally, the npcRNA43 locus was transcribed in sense/antisense orientation and its overexpression led to a developmental phenotype suggesting a novel compensatory mechanism mediated by an antisense RNA to control gene expression. We think that environmental control of long and small npcRNAs through interactions with RBPs may fine tune expression patterns of regulatory genes to modulate root developmental plasticity.

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PSB event reminder
by contact＠psb.vib-ugent.be 31 Aug '11

31 Aug '11

Calendar Name: seminars Scheduled for: Friday, September 2 2011, 14:00 - 15:30 Event text: Dr Martin Crespi Institut des Sciences V�g�tales CNRS Universit� Paris Gif sur Yvette/Paris FRANCE Details: �Impact of non-coding RNAs in root developmental plasticity� ABSTRACT Long non-protein coding RNAs (npcRNA) represent an emerging class of riboregulators, which act either directly in this long form or are processed to shorter miRNA and siRNAs. Plant and animals use small RNAs (microRNAs and siRNAs) as guide for post-transcriptional and epigenetic regulation. In plants, miRNAs and trans-acting siRNA (tasiRNA) result from different biogenesis pathways but both interact with target transcripts to direct their cleavage. Genome-wide bioinformatic analysis of full-length cDNA databases allowed us to identify 76 Arabidopsis long npcRNAs. Eleven npcRNAs were antisense to protein-coding mRNAs whereas certain corresponded to miRNA or siRNA precursors. In addition, numerous 24-nt siRNAs matched to five different npcRNAs. To link them to root developmental plasticity, we have shown that abiotic stresses and hormone treatments in roots altered the accumulation of 22 of these npcRNAs. Functional studies are ongoing to understand the regulatory mechanisms involving npcRNAs and their interacting RNA binding proteins in root tissues. We have identified an RNA-binding protein that interacts with an npcRNA that accumulates in nuclear �speckles� and controls auxin responses. In addition, one npcRNA expressed in root tissues corresponded to TAS3a, a tasiRNA precursor target of miR390. A feedback mechanism involving miR390/tasiRNAs and their ARF targets quantitatively controls lateral root emergence. Finally, the npcRNA43 locus was transcribed in sense/antisense orientation and its overexpression led to a developmental phenotype suggesting a novel compensatory mechanism mediated by an antisense RNA to control gene expression. We think that environmental control of long and small npcRNAs through interactions with RBPs may fine tune expression patterns of regulatory genes to modulate root developmental plasticity.

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Seminar Dr Martin Crespi 02/09
by Delphine Verspeel 26 Aug '11

26 Aug '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 September
by Delphine Verspeel 26 Aug '11

26 Aug '11

Dear all, Enclosed you can find our upcoming seminars for September. 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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FW: Seminar Prof Peter Tompa 16/08
by Delphine Verspeel 12 Aug '11

12 Aug '11

Dear All, The seminar of Prof Peter Tompa has been cancelled. 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 despe(a)psb.vib-ugent.be <mailto:nahau@psb.vib-ugent.be> From: Delphine Verspeel [mailto:despe@psb.ugent.be] Sent: woensdag 3 augustus 2011 17:21 To: meetings(a)psb.vib-ugent.be Subject: Seminar Prof Peter Tompa 16/08 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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Seminar Prof Peter Tompa 16/08
by Delphine Verspeel 03 Aug '11

03 Aug '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 seminar August
by Delphine Verspeel 03 Aug '11

03 Aug '11

Dear All, Enclosed you can find our upcoming seminar for August. 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 despe(a)psb.vib-ugent.be <mailto:nahau@psb.vib-ugent.be>

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FW: Seminar Prof Uli Schurr 28/06
by Delphine Verspeel 28 Jun '11

28 Jun '11

Dear All, Prof Uli Schurr and Fabio Fiorani will be a little bit later because of traffic. The seminar will start at 11u30 instead of 11u00. 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 despe(a)psb.vib-ugent.be <mailto:nahau@psb.vib-ugent.be> From: Delphine Verspeel [mailto:despe@psb.ugent.be] Sent: woensdag 1 juni 2011 11:25 To: 'meetings(a)psb.vib-ugent.be' Subject: Seminar Prof Uli Schurr 28/06 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 28 Jun '11

28 Jun '11

Calendar Name: seminars Scheduled for: Tuesday, June 28 2011, 11:00 - 12:30 Event text: Prof Uli Schurr Forschungszentrum J�lich ICG-3: Phytosphere J�lich GERMANY Details: �Phenotyping: Quantitative Analysis of Structure and Function of Plants� ABSTRACT Plant phenotyping is often a bottleneck for the identification of gene function. The talk will illustrate, how modern technologies can be used to quantify plant growth, transport, photosynthesis and exchange processes at a mechanistic, high-throughput and finally on a field level. An integrated concept of plant phenotyping of dynamic plant function and structure based on defined genetic material, adequate environmental simulation and monitoring as well as novel, mostly non-invasive sensors will be presented. Integration into automated systems increases throughput and accuracy of the results. Systematic approaches for the development of phenotyping technologies and protocols as well as their integration into databases will be presented. The role of heterogeneous and dynamic environments will be highlighted as one of the crucial aspects of plant phenotyping for the identification of relevant functions. An outlook will be presented on future technologies and the integration of non-invasive and invasive analysis of plants.

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PSB event reminder
by contact＠psb.vib-ugent.be 26 Jun '11

26 Jun '11

Calendar Name: seminars Scheduled for: Tuesday, June 28 2011, 11:00 - 12:30 Event text: Prof Uli Schurr Forschungszentrum J�lich ICG-3: Phytosphere J�lich GERMANY Details: �Phenotyping: Quantitative Analysis of Structure and Function of Plants� ABSTRACT Plant phenotyping is often a bottleneck for the identification of gene function. The talk will illustrate, how modern technologies can be used to quantify plant growth, transport, photosynthesis and exchange processes at a mechanistic, high-throughput and finally on a field level. An integrated concept of plant phenotyping of dynamic plant function and structure based on defined genetic material, adequate environmental simulation and monitoring as well as novel, mostly non-invasive sensors will be presented. Integration into automated systems increases throughput and accuracy of the results. Systematic approaches for the development of phenotyping technologies and protocols as well as their integration into databases will be presented. The role of heterogeneous and dynamic environments will be highlighted as one of the crucial aspects of plant phenotyping for the identification of relevant functions. An outlook will be presented on future technologies and the integration of non-invasive and invasive analysis of plants.

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