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Role of the Salicylic Acid signalling pathway in the Mi-1-mediated resistance of tomato to whitefly Bemisia tabaci

AuthorsNombela, Gloria ; Rodriguez, C.I.; Kaloshian, I.; Muñiz, Mariano
Issue Date2008
CitationXXIII International Congress of Entomology (ICE). Durban (Sudáfrica
AbstractPlant defense responses to pests, pathogens or wounding are usually dependent on either the salicylic acid (SA) pathway or jasmonic acid (JA) and ethylene-dependent pathways. In Arabidopsis, the B-biotype of Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) induced SA defenses and suppressed JA defenses. In tomato, resistance to B. tabaci is mediated by the Mi-1 gene, which also regulates resistance to potato aphid Macrosiphum euphorbiae and 3 species of root-knot nematodes (Meloidogyne spp.). A role for the SA signaling pathway in Mi-1-mediated resistances to root-knot nematodes and aphids has been previously identified. In the present work, the NahG transgene that eliminates endogenous salicylic acid (by degradation to catechol) was used to test the role of the SA pathway in the resistance mediated by Mi-1 gene to B. tabaci (B and Q biotypes).
Appears in Collections:(ICA) Comunicaciones congresos
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