X-ray spectrometry in plant biologyKatarina Vogel-Mikuš
, Iztok Arčon
, Alojz Kodre
, Anja Kavčič
, Peter Kump
, Primož Pelicon
, 2018, objavljeni povzetek znanstvenega prispevka na konferenci (vabljeno predavanje)
Opis: Trace elements are essential components of living systems, but at the same time they can be toxic at concentrations beyond those necessary for their biological functions. In addition, the toxicity can be extended to other non-essential elements of very similar atomic characteristics that can mimic the properties of a trace element.
Trace element malnutrition affects more than half of the world’s population, while on the other hand industrialization, traffic and extensive use of fertilizers have resulted in exceedingly high concentrations of non-essential elements in food crops, posing risks to human health.
In order to be able to develop and improve phyto-technologies that enable production of safe and quality food, knowledge on the basic mechanisms involved in trace and non-essential element uptake, transport, accumulation and ligand environment in plants is needed.
Such studies are nowadays supported by highly sophisticated X-ray based techniques, such as synchrotron based X-ray fluorescence spectrometry, proton induced X-ray emission and X-ray absorption spectroscopy, enabling imaging of element distribution and determination of speciation and ligand environment of trace elements in biological tissues and cells with high spatial resolution and sensitivity.
Selected case studies of metal distribution and speciation in selected model and crop plants, achieved by interdisciplinary work, will be presented.
Ključne besede: X-ray spectrometry, plants, XANES, EXAFS
Objavljeno v RUNG: 12.09.2018; Ogledov: 3050; Prenosov: 0
Gradivo ima več datotek! Več...
Čuvari (Keepers)Peter Purg
, 2017, umetniška poustvaritev
Opis: The pavement reconstructions in the Belgrade University of the Arts area at Kosančičev venac had been going on for months, and heaps of cobblestone. Sand just kept being moved from one side of the rubble-filled street to the other. Suddenly one afternoon, on the 30th of March 2017, a little bed of dry (stonewall) plants appeared on the top of the biggest sand heap. They remained there for a whole month, somebody must have been caring for them... Soon after they suddenly disappeared, another big bright flower took their place immediately -- but on the very same day (April 28th), that flower disappeared, too.
The documentary photos were taken (in the order of gallery appearance) every couple of days throughout April 2017 -- special thanks to (photo by) Rastko Čirić and Danica Bojić
Ključne besede: analog, belgrade, Beograd, drywall, installation, intervention, plants, site-specific
Objavljeno v RUNG: 13.06.2017; Ogledov: 3605; Prenosov: 0