Rh. Li et al., Differentiation of dasheen mosaic potyvirus isolates based on variability in the apparent size of the capsid protein in Western blots, J PHYTOPATH, 147(6), 1999, pp. 359-364
Citations number
33
Categorie Soggetti
Plant Sciences
Journal title
JOURNAL OF PHYTOPATHOLOGY-PHYTOPATHOLOGISCHE ZEITSCHRIFT
The capsid protein (CP) sizes of seven dasheen mosaic virus (DsMV) isolates
and one isolate of vanilla mosaic virus were estimated to be 38-47 kDa and
47 kDa, respectively, based on Western blot analyses using DsMV polyclonal
antiserum. The CP sizes of 12 other potyviruses were estimated to be 31-36
kDa. Apparent CP sizes of the DsMV isolates extracted from their original
hosts were 47 kDa (Xanthosoma caracu), 45 kDa (Colocasia esculenta, Zantede
schia aethiopica), and 38-46 kDa (Caludium hortulanum). Propagation in seed
lings of Philodendron selloum did not affect the CP sizes of any of the ind
ividual DsMV isolates. The same characteristic CP sizes were also detected
in Western blot analyses of these isolates, using polyclonal antisera of ei
ght other potyviruses, or using Agdia Poty 1 monoclonal antiserum, and usin
g three monoclonal antisera of papaya ringspot virus type W. The apparent C
P size and pattern of apparent breakdown products as revealed by Western bl
ots of extracts from infected aroids may be used in the characterization an
d differentiation of DsMV isolates.