BEGIN:VCALENDAR PRODID:-//eluceo/ical//2.0/EN VERSION:2.0 CALSCALE:GREGORIAN BEGIN:VEVENT UID:1bcf731d37a703b354b7fae007f653cf DTSTAMP:20240718T051744Z SUMMARY:Mass spectrometric imaging of plants\, insects and bacteria: lookin g for semiochemicals DESCRIPTION:Understanding of cellular structure of whole organism or organs was achieved in past by optical microscopy accompanied with a specific st aining. Nowadays fluorescence microscopy can even resolve subcellular stru ctures. Alternatively\, infrared and Raman microscopy can beside the morph ological information provide insight on chemical classes of molecules abun dant in cells.\nMass spectrometry (MS) is one of the most sensitive analyt ical methods available today with a wide range of attainable analytes from simple ions to large proteins or their complexes with DNA. MS data can pr ovide information on molecular composition and if tandem MS is performed w e can predict molecular structure of the analyte in question.\nPerforming measurement of MS spectra from many spots of the sample enable constructin g chemical maps of abundance for all masses we are able to resolve. This m ethod\, named MS imaging (MSI)\, enhance information on cellular organizat ion with a chemical contrast and identify even low-abundant compounds as s emiochemicals on/in organisms.\nIn my lecture I will summarize our researc h on MSI of plants\, insects and bacteria focusing on deciphering chemical structure of semiochemicals and their spatial distributions on studied sa mples. These data were correlated with biological observations and on many cases lead to new insights to chemical ecology. URL:https://www.leibniz-hki.de/de/veranstaltung/348.html DTSTART:20151209T161500 DTEND:20151209T161500 LOCATION:Hörsaal 5\, Ernst-Abbe-Platz END:VEVENT BEGIN:VTIMEZONE TZID:Europe/Berlin BEGIN:STANDARD DTSTART:20151209T161500 TZNAME:CET TZOFFSETTO:+0100 TZOFFSETFROM:+0100 END:STANDARD END:VTIMEZONE END:VCALENDAR