Molecular Plant-Microbe Interactions (2006) 19, 383-388

Fiona L. Goggin, Lingling Jia, Gowri Shah, Stephanie Hebert, Valerie M. Williamson and Diane E. Ullman (2006)
Heterologous expression of the Mi-1.2 gene from tomato confers resistance against nematodes but not aphids in eggplant
Molecular Plant-Microbe Interactions 19 (4), 383-388
Abstract: The Mi-1.2 gene in tomato (Solanum lycopersicum) is a member of the nucleotide-binding leucine-rich repeat (NB-LRR) class of plant resistance genes, and confers resistance against root-knot nematodes (Meloidogyne spp.), the potato aphid (Macrosiphum euphorbiae), and the sweet potato whitefly (Bemisia tabaci). Mi-1.2 mediates a rapid local defensive response at the site of infection, although the signaling and defensive pathways required for resistance are largely unknown. In this study, eggplant (S. melongena) was transformed with Mi-1.2 to determine whether this gene can function in a genetic background other than tomato. Eggplants that carried Mi-1.2 displayed resistance to the root-knot nematode Meloidogyne javanica but were fully susceptible to the potato aphid, whereas a susceptible tomato line transformed with the same transgene was resistant to nematodes and aphids. This study shows that Mi-1.2 can confer nematode resistance in another Solanaceous species. It also indicates that the requirements for Mi-mediated aphid and nematode resistance differ. Potentially, aphid resistance requires additional genes that are not conserved between tomato and eggplant.
(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): Fiona L. Goggin

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

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Macrosiphum euphorbiae	Eggplant (Solanum melongena)
	Macrosiphum euphorbiae	Tomato (Solanum lycopersicum)
	Meloidogyne javanica	Eggplant (Solanum melongena)
	Meloidogyne javanica	Tomato (Solanum lycopersicum)