University of Belgrade

Institute for
Multidisciplinary Research

Project information

Barley genotypes with contrasting tolerance to biotic and abiotic stresses: Do chloroplast derived redox signals mediate the trade-off strategy

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Project ID Bilateralni SRB-GER
Project Title Barley genotypes with contrasting tolerance to biotic and abiotic stresses: Do chloroplast derived redox signals mediate the trade-off strategy

Project Leader
IMSI Status Manages the subproject / Participates

Financial Source Ministry of Education, Science and Technological Development, DAAD (German Academic Exchange Service)


Category of Project Bilateral cooperation

 

PROJECT DESCRIPTION

Plants are exposed to a variety of abiotic as well as biotic stresses during their life cycle. To cope with these stresses, plants have to invest energy and resources for defence. Strong tolerance towards one of the stresses might entail a strong sensitivity towards other stresses and/or yield penalties as a tradeoff. On the other hand, crop plants are selected for rapid growth and yield characteristics, and eventually have lost plasticity during the breeding processes. In plant ecology, this dilemma has been described as “growth or defend”-hypothesis. The project will contribute to better understanding of the basic cellular and physiological mechanisms of resource allocation into different defence strategies. This knowledge will help to assist rationale breeding towards crops with improved stress tolerance. We will use selected lines from a large panel of barley genotypes already characterized for their response against powdery mildew as a biotic stress, as well as low-temperature acclimation as a form of abiotic stress. Selected lines with contrasting tolerance to stresses will be the basis for the project and the samples will be jointly analysed by using the complementary expertise of both labs. A transient disturbance of redox homeostasis in chloroplast upon illumination by high photosynthetically active radiation (PAR) will be applied to follow kinetic of changes in redox status of ascorbate and glutathione with aim to find interrelation to different phenylpropanoid pathways specific to stress type. We hypothesize that increase in accumulation of particular phenylpropanoids reflects the time-point when the plant switches its allocation strategy. To proof this, we will establish if barley genotypes different in their adaptation towards various stresses also differ in their phenylpropanoid accumulation patterns. This hypothesis has so far not been studied. We will also include chloroplast proteome analysis providing the information on the enzymatic redox components and posttranslational modified proteins, as well as stress adaptation of the plastids in general.


PROJECT DURATION

 

From: 01.01.2019.   To: 01.01.2021.

 

PARTNERS

 

 

PARTICIPANTS


No. Participant Institution