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A Hormone—Plant Style

Published on 29. Mai 2020

Researchers develop biotechnological production process 

How can chemistry be used to produce plant hormones? This is the subject of a new study being carried out by doctoral student Jana Löwe and the two professors, Dr Harald Gröger and Dr Karl-Josef Dietz (from left to right). Photo: Bielefeld University
Plants produce the hormone jasmonic acid as a defence response when challenged. This is how they ensure that their predators no longer like the taste of their leaves. Biologists want to find out whether biological precursors and other variants of jasmonic acid lead to similar or different effects. But such derivatives of the hormone have so far been too expensive for experiments and difficult to come by. Researchers from the Faculties of Chemistry and Biology at Bielefeld University have now found a method that might make the production of a biologically significant precursor of jasmonic acid more efficient and cheaper. Their innovation: they imitate how plants produce the hormone. The result is 12-OPDA, a central precursor of jasmonic acid. In the long term, it could also be a potential precursor for high-quality perfume. The researchers present their method today (29.05.2020) in the research journal Advanced Science.

 

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Posted by JHeeren in General

A Non-Destructive Method of Analysing Molecules in Cells

Published on 29. Mai 2020

Fibre laser microscopy to be used in clinical applications

The fibre-based microscope – the setup pictured here is in Bielefeld. Future versions of the device are intended to be made small enough to be portable. Photo: Bielefeld University/J. Kopp
When investigating how tumors grow, or how pharmaceuticals affect different types of cells, researchers have to understand how molecules within a cell react – and interact. This is possible with modern laser microscopy. Until now, however, molecules in cell specimens had to be labelled with fluorescent substances in order to make them visible, and this can distort the very behavior of the molecules. Research groups from Bielefeld University and the University of Hong Kong have developed a laser microscope that works without having to label the molecules. For this, the researchers innovated a unique compact fibre laser instead of the solid-state lasers that had previously been used. The new microscope generates far less noise when in use than customary designs, making it suitable for use in operating rooms. The researchers presented their innovative technology in the journal ‘Light: Science and Applications,’ which is published by Springer Nature.

 

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Posted by JHeeren in General
Tags: fo

How news becomes false news

Published on 15. Mai 2020
New ZiF research group on the effects of digital media

Social media is changing communication just as much as the dissemination of news. Radical positions that used to be voiced in the private sphere can now reach a worldwide audience. The research group "Multimodal Rhetoric in Online Media Communications" at the Center for Interdisciplinary Research (ZiF) at Bielefeld University will investigate how sub-communities and other interested parties create, manage and disseminate information across media platforms. The researchers will focus specifically on the role of language, images and videos in this process. The group starts on May 18, with a virtual opening conference. The aim is to develop analysis tools that will allow us track the development and flow of different kinds of information, particularly false information, across media platforms.[Weiterlesen]
Posted by JBömer in General
Tags: homepage

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