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A Geminivirus, Serologically Related to Maize Streak Virus, from Digitaria sanguinalis from Vanuatu

¹ IRHO/CIRAD, Laboratoire de Phytovirologie des Régions Chaudes, BP 5035, 34032 Montpellier Cedex, France
² Istituto di Fitovirologia Applicata, CNR, Via Vigliani 104, 10135 Torino, Italy
and³ Laboratoire de Virologie, Institut de Biologie Moléculaire et Cellulaire, 15 rue Descartes, 67084 Strasbourg, France

Electron microscopy of purified particles of a virus found in Digitaria sanguinalis from Vanuatu (formerly New Hebrides) indicated that it is a geminivirus. Preparations of virus particles contained one coat protein of mol. wt. about 27500 and circular and linear single-stranded DNA about 2350 nucleotides in length. In thin sections of infected cells, geminate particles were found in crystalline arrays both in nuclei and in the cytoplasm. The virus is serologically related to maize streak virus but differs from it with a serological differentiation index of 3.

Keywords: Digitaria sanguinalis, geminivirus, characterization

Received 29 October 1985; accepted 31 January 1986.

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