INVESTIGADORES
VOJNOV Adrian Alberto
artículos
Título:
Surface barriers of mandarin cv. 'Okitsu' leaves make a major contribution to canker disease resistance.
Autor/es:
FAVARO MA; MICHELOUD NG; ROESCHLIN RA; CHIESA MA; CASTAGNARO AP; VOJNOV AA; GMITTER F; GADEA VACAS J; RISTA LM; GARIGLIO NF; MARANO MR.
Revista:
PHYTOPATHOLOGY
Editorial:
AMER PHYTOPATHOLOGICAL SOC
Referencias:
Año: 2014 vol. 104 p. 970 - 976
ISSN:
0031-949X
Resumen:
Field evaluations have shown that Satsuma mandarin (Citrus unshiu) cv. ´Okitsu´ is one of the mandarin cultivars that shows substantial resistance to Xanthomonas citri subsp. citri (X. citri), the causal agent of citrus bacterial canker disease. However, the mechanisms underlying this resistance are not well understood. In this study we have shown that ´Okitsu´ leaves are nevertheless susceptible to X. citri infection during a period of their development, but this period is shorter than that seen in the susceptible mandarin cv. ´Clemenules´ (Citrus clementina). Under controlled growth conditions the resistance of ´Okitsu´ cultivar to X. citri was associated with the age of the leaf and was evident in spray-inoculated plants but not in those inoculated by infiltration. Furthermore, X. citri showed reduced attachment and biofilm formation in ´Okitsu´ leaves as compared to ´Clemenules´. Taken together, our data suggest that structural features of the ´Okitsu´ leaf surface, such as the physical properties of the cuticle, are involved in the resistance to X. citri.