Fakhro, Ahmad:
ISBN 9783899599954

Berliner ökophysiologische und phytomedizinische Schriften Bd. 9 # Pb., 170 S., 19 Abb., davon 3 in Farbe, 7 Tab.

SCHLAGWORTE:
Pepino mosaic virus
Piriforma spora indica
Tomate
Genexpression

Resistenz, induzierte
induced resistance
groth promotion
Wachstumsförderung

The plant virus PepMV is a serious problem for tomato production worldwide concerning yield and quality. The ability to confine this pathogen is limited for several reasons. Firstly, no tolerant or resistant tomato cultivar was found. Instead, all tomato lines tested responded with a decrease in biomass production. Secondly, the virus can be transmitted through the nutrient solution. A very low concentration is sufficient to infect healthy plant roots. Thirdly, the virus could be detected for the first time in Syria indicating its further global spread. Searching for fungal biological agents resulted in a disaster, since P. aphanidermatum, P. oligandrum, and P. indica enhanced the concentration of virus particles. However, it turned out, that this might be due to limited growth conditions, such as low light. Providing sufficient light, as tested for P. indica, some biological agents are promising to confine the spread of PepMV in tomato. Moreover, P. indica showed a significant effect to promote vegetative plant growth and fruit biomass. Future experiments have to confirm these effects and are needed to test, if such biological agents can be transferred to tomato produced under commercial conditions.

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