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STUDIES ON POTATO VIRUS X I. TYPES OF CHANGE IN POTATO VIRUS X INFECTIONS
Author(s) -
Matthews R. E. F.
Publication year - 1949
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1949.tb06941.x
Subject(s) - biology , infectivity , virus , strain (injury) , potato virus x , potato virus y , virology , solanaceae , host (biology) , tobacco etch virus , potyvirus , plant virus , genetics , gene , anatomy
In tobacco plants infected with mild strains of virus X , severe strains may arise as mutations which multiply locally. Several strains of virus X gradually lost infectivity for potato on continued culture in other hosts such as tobacco. Strains that are poorly infective or invasive for potato may take considerable time to move into the growing shoot from the tuber in detectable amounts. Pronounced and apparently spontaneous increases in the severity of the strain that dominates in potatoes may occur in field crops.