Abstract
Organogermanium compound, carboxyethylgermanium sesquioxide (Ge-132), greatly inhibited the number of local lesions produced on leaves of Samsun NN tobacco inoculated with TMV. However, no remarkable inhibition of TMV multiplication in Samsun tobacco or CMV multiplication in cucumber were observed. It was apparent that Ge-132 treatment of these plants which were not inoculated with viruses, caused the leaf deformities and other symptoms resembling those of some virus diseases. In Ge-132 treated leaves, nucleic acid and protein synthesis were more effectively inhibited in ribosomal fraction than that in TMV fraction. In addition, Ge-132 was found to induce necrotic lesions on N. glutinosa leaves systemically infected with TMV at 30 C, as does actinomycin D.
