Alteration in cell wall composition and structure in viroid-infected cells

摘要: The isolated walls from CEV (citrus exocortis viroid) infected cells have a higher proportion of arabinosyl and galactosyl residues lower xylosyl, mannosyl glucosyl residues, as well proteins, than do corresponding healthy cells. These differences become more significant at the early stationary phase growth. Three kinds hydroxyproline, indicators wall extensin, were consistently in CEV-infectcd those tomato It is proposed that arabinogalactans, comprising an undetermined extensin non-extensin components, are significantly accumulated CEV-infected to extent which may impair loosening process. In addition implied accumulation greater content 3-linked (2,4,6-tri-O-methyl- D -glucose) detected This change correlates with specific β-1,3-endoglucanase effect for improved release protoplasts CEV-infected, suspension-cultured composition characteristics be correlated fundamental distinctions associated expansive cell growth surface properties exist between CEV-containing tissues.