Abstract
IT has already been shown that the rough dwarf disease of maize, so far known only from Italy, Spain and Israel, is caused by a virus1. Since this virus has a pronounced dwarfing effect on maize seedlings, which in most cases proves lethal, it would be expected that certain physiological abnormalities could be determined at a rather early stage of infection. The effect of this virus on the balance of free amino-acids in infected maize plants is being studied in our laboratory. During the course of this work an abnormal accumulation of asparagine was noticed in all plants bearing the virus infection symptoms, whereas in all healthy plants of the same age this amide was at the most only faintly detectable by the method of two-dimensional paper chromatography which we used2. Moreover, when l-asparagine was added to the sap extracted from diseased plants and chromatographed, its spot coincided with the one suspected to be that amide.
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HARPAZ, I., APPLEBAUM, S. Accumulation of Asparagine in Maize Plants infected by Maize Rough Dwarf Virus and its Significance in Plant Virology. Nature 192, 780–781 (1961). https://doi.org/10.1038/192780a0
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DOI: https://doi.org/10.1038/192780a0
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