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The Root-Knot Nematode Resistance Gene Mi-1.2 of Tomato Is Responsible for Resistance Against the Whitefly Bemisia tabaci

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Nombela, Gloria, Williamson, Valerie M., Muñiz, Mariano·2003·Molecular Plant-Microbe Interactions®

Abstract

The tomato gene Mi-1.2 confers resistance against root-knot nematodes and some isolates of potato aphid. Resistance to the whitefly Bemisia tabaci previously has been observed in Mi-bearing commercial tomato cultivars, suggesting that Mi, or a closely linked gene, is responsible for the resistance. The response of two biotypes of B. tabaci to tomato carrying the cloned Mi was compared with that of the isogenic untransformed tomato line Moneymaker. Our results indicate that Mi-1.2 is responsible for the resistance in tomato plants to both B- and Q- biotypes. Mi-1.2 is unique among characterized resistance genes in its activity against three very different organisms (root-knot nematodes, aphids, and whiteflies). These pests are among the most important on tomato crops worldwide, making Mi a valuable resource in integrated pest management programs.

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Metadata

Authors
Nombela, G., Williamson, V. M., & Muñiz, M.
Venue
Molecular Plant-Microbe Interactions®
Published
2003-07
Volume
16
Issue
7
Pages
645-649
ISSN
  • 0894-0282 (ISSN-L)
  • 1943-7706
OpenAlex
W1990778234
Cited by
401
References
0
FWCI
18.21
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: The Root-Knot Nematode Resistance Gene Mi-1.2 of Tomato Is Responsible for Resistance Against the Whitefly Bemisia tabaci. https://app.cochat.ai/papers/10.1094/mpmi.2003.16.7.645
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Nombela, G., Williamson, V. M., & Muñiz, M. (2003). The Root-Knot Nematode Resistance Gene Mi-1.2 of Tomato Is Responsible for Resistance Against the Whitefly Bemisia tabaci. Molecular Plant-Microbe Interactions®. https://doi.org/10.1094/mpmi.2003.16.7.645

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