Characterization of Xanthomonas euvesicatoria Strains Pathogens of Pepper in Serbia
Karakterizacija sojeva Xanthomonas euvesicatoria, patogena paprike u Srbiji
Pregled/ Otvaranje
Autor
Ignjatov, Maja
Gasic, Katarina
Ivanovic, Milan
Sevic, Milan
Obradovic, Aleksa
Milosevic, Mirjana
Ključne reči
PepperBacterial leaf spot
Xanthomonas complex
Xanthomonas euvesicatoria
Xanthomonas vesicatoria
Xanthomonas perforans
Xanthomonas gardneri
Physiological races
Resistance
Paprika
bakteriozna pegavost lista
fiziološke rase
rezistentnost
Metadata
Prikaz svih podataka o dokumentuApstrakt
During spring and summer of 2008, 101 bacterial strains was isolated from the diseased
pepper leaves collected from different pepper growing areas in the Republic of Serbia. The
aim of this research was to characterize the isolated strains and determine their taxonomic
position according to the most recent nomenclature.
Pathogenic, biochemical and physiological characteristics of isolated bacteria were
tested using standard bacteriological tests. The pathogen races were determined according
to the reaction of differential varieties of Early Calwonder (ECW), their isogenic lines
(ECW-10R, ECW-20R, ECW-30R) and Capsicum pubescens. The sensitivity of strains to bactericides
was studied in vitro by culturing bacteria on sucrose pepton agar (SPA) plates, amended
with filter-sterilized aqueous solution of streptomycin and kasugamycin (50, 100, 200
ppm) or copper-sulphate (100, 200 ppm).
Based on pathogenic, biochemical and physiological characteristics, the investigated
strains belonged to Xanthomonas euvesicatoria. The reaction of pepper differential varieties
indicated that these strains belonged to pepper races P1, P3, P7, P8. Streptomycin resistant
strains were not detected, but 6 strains were resistant to kasugamycin (50 ppm) and 13
strains to copper-sulphate (200 ppm), indicating bacterial resistance development. Tokom 2008. godine prikupljeni su uzorci obolelog lišća paprike sa simptomima bakteriozne
pegavosti iz različitih lokaliteta Republike Srbije. Izolacijom iz zaraženih listova dobijen
je 101 soj bakterija. Cilj ovog rada je proučavanje odlika i identifikacija izolovanih sojeva
bakterije u skladu sa najnovijom nomenklaturom. Patogene i biohemijsko-fiziološke karakteristike
sojeva proučene su korišćenjem standardnih bakterioloških testova. Određivanje fizioloških
rasa bakterijske populacije izvršeno je na osnovu reakcije diferencijalnih sorti paprike
Early Calwonder (ECW), njenih izogenih linija (ECW-10, ECW-20 ECW-30) i reakcijom
sorte Capsicum pubescens. Proučena je osetljivost sojeva u in vitro uslovima na streptomicin,
kasugamicin i bakar-sulfat. Rezultati proučavanja biohemijsko-fizioloških odlika sojeva ukazuju
da naši sojevi pripadaju genetičkoj grupi „A“, odnosno vrsti Xanthomonas euvesicatoria.
Proučavani sojevi, takođe, predstavljaju heterogenu populaciju u kojoj su zastupljene četiri
fiziološke rase bakterije X. euvesicatoria (P1, P3, P7, P8). Sojevi rezistentni na streptomicin nisu
detektovani ovim istraživanjima. Otpornost na 50 ppm kasugamicina utvrđena je kod 6
sojeva, a 13 sojeva je bilo otporno na 200 ppm bakar-sulfata. Prikazani rezultati ukazuju na
opasnost od razvoja rezistentnosti bakterija na ova jedinjenja.
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