Role of thioredoxins in acclimation of plants to light and low temperature

Por Peter Geigenberger, Ludwig Maximilian University of Munich, Alemania

Master Inter-universitario de Agrobiología Ambiental (UPNA y UPV-EHU), Institute for Innovation & Sustainable Development in Food Chain (IS-FOOD) e Institute for Multidisciplinary Research in Applied Biology (IMAB-UPNA) organizan esta conferencia que será presencial, en lengua inglesa, y se emitirá también online mediante zoom a través del enlace:
https://unavarra.zoom.us/j/4238966469

Lugar: Sala de conferencias del edificio Jerónimo de Ayanz(UPNA)

Hora: 12,00h.

Abstract

Thioredoxins are thiol-disulfide oxidoreductases found in all organisms, including bacteria, fungi, animals and plants. They are key-players in thiol-based redox-regulation of many target proteins, involved in diverse functions. Plants have the most elaborated thioredoxin system among organisms containing a multiplicity of isoforms and different reduction systems. In this talk I will discuss the in-vivo role of plastid localized thioredoxins in dynamic acclimation to changing light intensities and low temperatures, down to freezing conditions. We found that NADPH dependent thioredoxin reductase C (NTRC) is indispensable to acclimate to high-light and fluctuating light and crucial for cold acclimation and freezing tolerance in Arabidopsis plants. Using proteomics and metabolomics, combined with reverse genetic approaches, mechanisms underlying these responses are currently being analyzed. To investigate the role of NTRC in heterotrophic plant tissues and crops, transgenic tomato plants are analyzed with fruit specific silencing of NTRC.  

CV Peter Geigenberger

since 2009      Professor of Plant Metabolism at the Ludwig-Maximilians-University Munich (LMU)

2008-2009      Research Group Leader at the Leibniz-Institute of Vegetable and Ornamental Crops in Großbeeren, Germany

2001-2007      Research Group Leader at the Max-Planck-Institute of Molecular Plant Physiology in Golm, Germany

1998-2000      Assistant Professor at the Botanical Institute, University of Heidelberg

1994-1998      Postdoctoral Fellow at the Botanical Institute, University of Heidelberg, Germany

1990-1994      PhD at University of Bayreuth under supervision of Prof. Mark Stitt

1983-1990      Study of biology at the University of Bayreuth, Germany

Volver