The nematode resistance gene Mi of tomato confers resistance against the potato aphid.
| Publication details |
| Title | The nematode resistance gene Mi of tomato confers resistance against the potato aphid. |
| Series name | Proceedings of the National Academy of Sciences of the United States of America |
| Volume | 95 |
| Issue | 17 |
| Year | 1998 |
| Pages | 9750-4 |
| Authors | Rossi, M. Goggin, FL. Milligan, SB. Kaloshian, I. Ullman, DE. Williamson, VM |
| Abstract | Resistance against the aphid Macrosiphum euphorbiae previously was observed in tomato and attributed to a novel gene, designated Meu-1, tightly linked to the nematode resistance gene, Mi. Recent cloning of Mi allowed us to determine whether Meu-1 and Mi are the same gene. We show that Mi is expressed in leaves, that aphid resistance is isolate-specific, and that susceptible tomato transformed with Mi is resistant to the same aphid isolates as the original resistant lines. We conclude that Mi and Meu-1 are the same gene and that Mi mediates resistance against both aphids and nematodes, organisms belonging to different phyla. Mi is the first example of a plant resistance gene active against two such distantly related organisms. Furthermore, it is the first isolate-specific insect resistance gene to be cloned and belongs to the nucleotide-binding, leucine-rich repeat family of resistance genes. |
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