Journal of Phytopathology - Phytopathologische Zeitschrift (1995) 143, 165-168

R. Buonaurio and N.N. Umesh Kumar (1995)
Active oxygen-producing and -scavenging enzymes in pepper leaves infected with Xanthomonas campestris pv. vesicatoria
Journal of Phytopathology - Phytopathologische Zeitschrift 143 (3), 165-168
Abstract: Lipoxygenase (LOX), peroxidase (POX), superoxide dismutase (SOD) and catalase (CAT) activities were determined in pepper (Capsicum annuum) leaves infected with Xanthomonas campestris pv. vesicatoria, from 3 to 15 days after inoculation, before symptom appearance and during the development of the disease. Strong Stimulation of LOX and POX activities was observed in infected leaves at an advanced stage of the disease (12-15 days after inoculation), when bacterial water-soaked spots and a slight chlorosis of the inoculated leaf areas were evident and a decrease in chlorophyll content of infected tissue was detected. The infection also induced a significant increase in CAT activity at the day 9 and a decrease in SOD and CAT activities at the day 12. On the basis of the changes observed, uncontrolled production of active oxygen species at advanced stages of infection is hypothesized.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Roberto Buonaurio

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host
molecular biology - genes

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Xanthomonas campestris pv. vesicatoria	Green pepper/chilli (Capsicum)