Peroxidase activity during susceptible and resistant interactions between cassava (Manihot esculenta) and Xanthomonas axonopodis pv. manihotis and Xanthomonas cassavae
Lf. Pereira et al., Peroxidase activity during susceptible and resistant interactions between cassava (Manihot esculenta) and Xanthomonas axonopodis pv. manihotis and Xanthomonas cassavae, J PHYTOPATH, 148(11-12), 2000, pp. 575-577
Citations number
10
Categorie Soggetti
Plant Sciences
Journal title
JOURNAL OF PHYTOPATHOLOGY-PHYTOPATHOLOGISCHE ZEITSCHRIFT
Phenolic compounds have been implicated in the resistance of cassava (Manih
ot esculenta) to xanthomonads. Cassava cultivars MCOL 22 and CM 523-7 were
inoculated with Xanthomonas axonopodis pv. manihotis and Xanthomonas cassav
ae. CM523-7 was susceptible to both pathogens, whereas MCOL 22 was suscepti
ble to X. a. pv. manihotis and resistant to X. cassavae. In the resistant i
nteraction, no disease symptoms were observed in the leaf, bacterial growth
was greatly reduced, and there was a twofold increase in cell wall-bound p
eroxidase activity, which may be related to lignin deposition.