Fitopatologia Brasileira (2002) 27, 33-41

Silvaldo F. Silveira and Acelino C. Alfenas (2002)
Análise de proteínas e isoenzimas de isolados de Rhizoctonia spp. patogênicos a Eucalyptus
[Protein and isozyme analysis of isolates of Rhizoctonia spp. pathogenic to Eucalyptus]
Fitopatologia Brasileira 27 (1), 33-41
Abstract: Isolates of Rhizoctonia solani (anastomosis groups AG1 and AG4) and binucleate isolates of other unidentified species, all pathogenic to Eucalyptus in Brazil, were characterized by protein and isozyme (ACP, 6-PGDH, LAP, SOD, MDH e IDH) analysis. Japanese strains of R. solani AG1 and other Brazilian isolates from others hosts were also included for comparison. Differences in protein patterns and isozyme phenotypes were observed between binucleate and multinucleate isolates, and among isolates of different anastomosis groups and subgroups. The protein patterns and isozyme phenotypes of Japanese isolates of R. solani AG1 differed from those of Brazilian isolates of the same anastomosis groups and the same morphological subgroups. Some Brazilian isolates morphologically similar to R. solani AG1-IB presented high similarity in protein patterns and isozyme phenotypes. This similarity was independent of the host plant and geographical origin. Polymorphisms in protein and isozyme patterns were also observed within the Brazilian R. solani AG4 group. We discuss the usefulness of protein and isozyme analyses for characterization of Rhizoctonia spp. isolates and for genetic and phylogenetic studies of fungi of this genus.
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(original language: Portuguese)
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Database assignments for author(s): Acelino C. Alfenas

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
molecular biology - genes

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Rhizoctonia solani	Eucalypt (Eucalyptus)	Brazil (south)
	Rhizoctonia solani	Eucalypt (Eucalyptus)	Brazil (NE)
	Binucleate Rhizoctonia	Eucalypt (Eucalyptus)	Brazil (south)
	Binucleate Rhizoctonia	Eucalypt (Eucalyptus)	Brazil (NE)