Gene silencing in tobacco protoplastsNigul, Lenne; Sarmiento Guerin, Maria Cecilia; Truve, ErkkiBiology of Plant-Microbe Interactions : proceedings of the 9th International Congress on Molecular Plant-Microbe Interactions, Amsterdam, the Netherlands, July 25-30, 19992000 / p. 140-141 Gene silencing in tobacco protoplastsSarmiento Guerin, Maria Cecilia; Nigul, Lenne; Aader, Ants; Kuusksalu, Anne; Truve, Erkki11th International Congress of Virology : Sydney, 19991999 / p. 163