The nematode resistance gene Mi of tomato confers resistance against the potato aphid
Magdalena Rossi,Fiona L. Goggin,Stephen B. Milligan,Isgouhi Kaloshian,Diane E. Ullman,Valerie M. Williamson +5 more
TLDR
It is shown 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.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.read more
Citations
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Plant pathogens and integrated defence responses to infection.
TL;DR: The current knowledge of recognition-dependent disease resistance in plants is reviewed, and a few crucial concepts are included to compare and contrast plant innate immunity with that more commonly associated with animals.
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Systemic acquired resistance
W.E. Durrant,Xinnian Dong +1 more
TL;DR: A model describing the sequence of events leading from initial infection to the induction of defense genes is presented and exciting new data suggest that the mobile signal for SAR might be a lipid molecule.
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Plant Immunity to Insect Herbivores
Gregg A. Howe,Georg Jander +1 more
TL;DR: A detailed understanding of plant immunity to arthropod herbivores will provide new insights into basic mechanisms of chemical communication and plant-animal coevolution and may also facilitate new approaches to crop protection and improvement.
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Induced systemic resistance by beneficial microbes
Corné M. J. Pieterse,Christos Zamioudis,Roeland L. Berendsen,David M. Weller,Saskia C. M. Van Wees,Peter A. H. M. Bakker +5 more
TL;DR: This review focuses on molecular processes at the interface between plant roots and ISR-eliciting mutualists, and on the progress in the understanding of ISR signaling and systemic defense priming.
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The Myriad Plant Responses to Herbivores.
TL;DR: Differential expression of plant genes in response to closely related insect species suggest that some elicitors generated by phloem-feeding insects are species-specific and are dependent on the herbivore's developmental stage.
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Applied Demography for Biologists: with Special Emphasis on Insects
TL;DR: This chapter discusses the development of Demographic Population Models for Two-Sex and Multiregional Demography, as well as its applications in Population I and II.