- Seminars - maillist.psb.ugent.be

seminar Alisdair Fernie
by Nathalie Vanden Hautte 14 Sep '10

14 Sep '10

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> . 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 06 Sep '10

06 Sep '10

Calendar Name: seminars Scheduled for: Monday, September 6 2010, 11:00 - 12:30 Event text: Prof Maria Helena S. Goldman Department of Biology, FFCLRP, University of S�o Paulo BRAZIL Details: "SCI1, A TISSUE-SPECIFIC CELL CYCLE REGULATOR THAT CONTROLS STIGMA/STYLE DEVELOPMENT" ABSTRACT The success of plant reproduction depends on the appropriate development of the reproductive organs, which involves general and specific regulatory networks. We have characterized a gene, SCI1 (stigma/style cell cycle inhibitor 1), encoding a nuclear small lysine-rich protein that exerts an inhibitory action on cell cycle. qRT-PCR and in situ hybridization experiments showed that SCI1 is stigma/style-specific and developmentally regulated. SCI1 RNAi knockdown and overexpression transgenic plants exhibited stigmas/styles with remarkably enlarged and reduced areas, respectively, due to differences in cell numbers. Alterations on SCI1 expression affected cell divisions on the stigmatic secretory zone (SSZ) and the differentiation timing of the papillar cells. Taken together, our results reveal that SCI1 is a novel tissue-specific negative cell cycle regulator that couples stigma cell division and differentiation. Additionally, two-hybrid and BiFC experiments showed that SCI1 interacts with A-type cyclins. We conclude that SCI1 represents a novel developmentally regulated tissue-specific gene that controls cell proliferation/differentiation, probably as a component of a signaling pathway involved in upper pistil development.

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PSB event reminder
by contact＠psb.vib-ugent.be 04 Sep '10

04 Sep '10

Calendar Name: seminars Scheduled for: Monday, September 6 2010, 11:00 - 12:30 Event text: Prof Maria Helena S. Goldman Department of Biology, FFCLRP, University of S�o Paulo BRAZIL Details: "SCI1, A TISSUE-SPECIFIC CELL CYCLE REGULATOR THAT CONTROLS STIGMA/STYLE DEVELOPMENT" ABSTRACT The success of plant reproduction depends on the appropriate development of the reproductive organs, which involves general and specific regulatory networks. We have characterized a gene, SCI1 (stigma/style cell cycle inhibitor 1), encoding a nuclear small lysine-rich protein that exerts an inhibitory action on cell cycle. qRT-PCR and in situ hybridization experiments showed that SCI1 is stigma/style-specific and developmentally regulated. SCI1 RNAi knockdown and overexpression transgenic plants exhibited stigmas/styles with remarkably enlarged and reduced areas, respectively, due to differences in cell numbers. Alterations on SCI1 expression affected cell divisions on the stigmatic secretory zone (SSZ) and the differentiation timing of the papillar cells. Taken together, our results reveal that SCI1 is a novel tissue-specific negative cell cycle regulator that couples stigma cell division and differentiation. Additionally, two-hybrid and BiFC experiments showed that SCI1 interacts with A-type cyclins. We conclude that SCI1 represents a novel developmentally regulated tissue-specific gene that controls cell proliferation/differentiation, probably as a component of a signaling pathway involved in upper pistil development.

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PSB event reminder
by contact＠psb.vib-ugent.be 26 Aug '10

26 Aug '10

Calendar Name: seminars Scheduled for: Thursday, August 26 2010, 11:00 - 12:30 Event text: Prof Ian Small Director, ARC Centre of Excellence in Plant Energy Biology University of Western Australia AUSTRALIA Details: "Perfectly Prepared RNA: getting transcripts ready for translation" ABSTRACT Ian Small ARC Centre of Excellence in Plant Energy Biology, University of Western Australia, Crawley 6009 WA, Australia Organelle gene expression involves a series of more or less coupled processes from transcription through transcript processing to translation. Many of the events that occur during these processes require sequence recognition by RNA processing factors. It has become abundantly clear over the last decade that in plants, pentatricopeptide repeat (PPR) proteins are the most numerous of these factors, with a bewildering array of 450+ family members in most angiosperms studied to date. The development of screens for RNA processing defects has enabled the identification of the functions of some of these proteins by reverse genetics; several other PPR genes have been singled out by forward genetic screens for phenotypes that involve defects in organelle function. The RNA targets and molecular functions for over 40 PPR proteins have been characterised, allowing the first generalisations to be drawn concerning their modes of action. Although the functions of over 90% of the PPR family are still to be worked out, it is becoming clear that certain subclasses of the family have a strong tendency to be associated with particular molecular processes such as transcription, splicing or RNA editing. Progress is being made at modelling the structure of PPR proteins and understanding how they recognise specific RNA sequences, offering hope that they could form the basis for a new way of designing custom-made RNA binding proteins for biotechnology

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upcoming seminars September
by Nathalie Vanden Hautte 24 Aug '10

24 Aug '10

Dear All Enclosed you can find our upcoming seminars for September. Kind regards Nathalie ____________________________________________ Nathalie Vanden Hautte 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 nahau(a)psb.vib-ugent.be

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PSB event reminder
by contact＠psb.vib-ugent.be 24 Aug '10

24 Aug '10

Calendar Name: seminars Scheduled for: Thursday, August 26 2010, 11:00 - 12:30 Event text: Prof Ian Small Director, ARC Centre of Excellence in Plant Energy Biology University of Western Australia AUSTRALIA Details: "Perfectly Prepared RNA: getting transcripts ready for translation" ABSTRACT Ian Small ARC Centre of Excellence in Plant Energy Biology, University of Western Australia, Crawley 6009 WA, Australia Organelle gene expression involves a series of more or less coupled processes from transcription through transcript processing to translation. Many of the events that occur during these processes require sequence recognition by RNA processing factors. It has become abundantly clear over the last decade that in plants, pentatricopeptide repeat (PPR) proteins are the most numerous of these factors, with a bewildering array of 450+ family members in most angiosperms studied to date. The development of screens for RNA processing defects has enabled the identification of the functions of some of these proteins by reverse genetics; several other PPR genes have been singled out by forward genetic screens for phenotypes that involve defects in organelle function. The RNA targets and molecular functions for over 40 PPR proteins have been characterised, allowing the first generalisations to be drawn concerning their modes of action. Although the functions of over 90% of the PPR family are still to be worked out, it is becoming clear that certain subclasses of the family have a strong tendency to be associated with particular molecular processes such as transcription, splicing or RNA editing. Progress is being made at modelling the structure of PPR proteins and understanding how they recognise specific RNA sequences, offering hope that they could form the basis for a new way of designing custom-made RNA binding proteins for biotechnology

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seminar Prof Maria-Helana Goldman 06/09
by Nathalie Vanden Hautte 23 Aug '10

23 Aug '10

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> . 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 Nathalie Vanden Hautte 23 Aug '10

23 Aug '10

Dear All Enclosed you can find our upcoming seminars for September. Kind regards Nathalie ____________________________________________ Nathalie Vanden Hautte 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 nahau(a)psb.vib-ugent.be

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seminar Prof Ian Small 26/08
by Nathalie Vanden Hautte 16 Aug '10

16 Aug '10

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> . 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 Nathalie Vanden Hautte 16 Aug '10

16 Aug '10

Dear All Enclosed you can find our upcoming seminar in August. Kind regards Nathalie ____________________________________________ Nathalie Vanden Hautte 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 nahau(a)psb.vib-ugent.be

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