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Transfer of mycotoxins from soil into agricultural useful plants using the example of Alternaria toxins and wheat plants

Project


Project code: BfR-SiN-08-1322-678
Contract period: 01.06.2017 - 31.12.2017
Purpose of research: Applied research

Mycotoxins are, in many cases, virulence factors for phytopathogenic fungi, i. e. the mycotoxins are essential for the infection of the respective host plant. In most of these cases, the symptoms of the infestation are clearly recognizable. However, mycotoxins are also detected in plants which show no visible external fungal attack. There could be various reasons for this: the production of mycotoxins by endophytic fungi (then, the infestation can`t be visually observed) or the uptake of mycotoxins from the soil via the roots into the plant. The transfer from the soil has already been intensively explored for another group of fungal secondary metabolites, namely for some antibiotics. For mycotoxins, there exist no or only a few inadequate data, for example for the transfer of aflatoxins, so that the importance of this intake path can`t be assessed at present. These studies are crucial to better understand, predict and minimize the causes of the accumulation of harmful mycotoxins in agricultural crops. For the group of the Alternaria toxins no studies have been carried out so far for the transfer into the plant, although fungi of the genera Alternaria are ubiquitous in the environment and Alternaria toxins contain a multitude of chemical structures as well as a high toxic potential in humans and animals as well as in (crop) plants. In the proposed project the entry of Alternaria toxins in wheat plants, a type of cereals of great importance as food and feed, should be investigated. In addition to the general studies concerning the transfer and accumulation of these toxins in different wheat varieties using hydroponics, the influence of abiotic factors such as temperature and pH on this transfer should also be investigated. The aim of the project is the assessment of the importance of this entry path and its contribution to the total accumulation of Alternaria toxins in wheat plants for a better understanding of the system

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Subjects

Framework programme

BMEL - research cluster

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