title: Viral RNA synthesis is renewed in protoplasts isolated from TMV-infected Xanthi tobacco leaves in an advanced stage of virus infection.
abstract: TMV-RNA synthesis was shown to be renewed in protoplasts isolated from TMV-infected Xanthi tobacco leaves in which virus synthesis has already slowed down or stopped. This was demonstrated by the use of isotope techniques in three different disease situations: (a) in primarily infected leaves 8-10 days after infection, (b) in secondarily infected leaves 2 mo after infection, and (c) in stable green areas ("true dark green islands" according to the terminology of Atkinson and Matthews, 1970) of leaves exhibiting mosaic symptoms.
authors.affiliation: Institute of Plant Physiology, Biological Research Center, Hungarian Academy of Sciences, H-6701 Szeged, Hungary.
authors.forename: F J
authors.initials: FJ
authors.lastname: Föglein
authors.forename: C
authors.initials: C
authors.lastname: Kalpagam
authors.forename: D C
authors.initials: DC
authors.lastname: Bates
authors.forename: G
authors.initials: G
authors.lastname: Premecz
authors.forename: A
authors.initials: A
authors.lastname: Nyitrai
authors.forename: G L
authors.initials: GL
authors.lastname: Farkas