Plant Resistance to Arthropods: Molecular and Conventional by C. Michael Smith

By C. Michael Smith

Arthropod resistant vegetation lessen pesticide toxins, alleviate starvation and increase human nutrients. Plant Resistance to Arthropods - Molecular and traditional methods synthesizes new information regarding the environmental benefits of plant resistance, transgenic resistance, the molecular bases of resistance, and using molecular markers to map resistance genes. Readers are offered in-depth descriptions of innovations to quantify resistance, components affecting resistance expression, and the deployment of resistance genes. New information regarding gene-for-gene interactions among resistant vegetation and arthropod biotypes is mentioned in addition to the new examples of utilizing arthropod resistant crops in built-in pest administration structures.

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Taiwan Sugar Exp. Sta. Rep. 19:53–56. Chapman, R. F. 1974. The chemical inhibition of feeding by phytophagous insects: a review. Bull. Entomol. Res. 64: 339–363. Chapman, R. F. 1988. Sensory aspects of host-plant recognition by Acridoidea: Questions associated with the multiplicity of receptors and variability of response. J. Insect Physiol. 34:167–174. Chapman, R. , and W. M. Blaney. 1979. How animals perceive secondary compounds. In: G. A. Rosenthal and D. H. ), Herbivores: Their Interaction with Secondary Metabolites.

Thorsteinson (1960) proposed that host selection be based on arthropod responses to both non-nutrient and nutrient phytochemicals. Their theories stemmed from the fact that many arthropods can be stimulated to feed by nutrient chemicals such as amino acids, carbohydrates, and vitamins (House 1969, Hsiao 1969). The Dual Discrimination Theory, proposed by Kennedy, continues to guide contemporary thinking about arthropod host plant selection. In 1970, Roger Whittaker synthesized the concepts of nutrient and non-nutritive plant allelochemicals, as well as the different ideas about their primary or secondary function, by introducing the term allelochemical to replace secondary plant substances (Whittaker 1970).

The upper epidermal cells of susceptible cultivars collapse during mite feeding, while those of the resistant cultivar buckle locally, but remain intact. ANTIXENOSIS - ADVERSE EFFECTS 37 Stems thickened by increased layers of epidermal cells deter or limit entrance of stem damaging arthropods of some cultivars of rice, sugarcane, and wheat (Fiori and Dolan 1981, Patanakamjorn and Pathak 1967, Martin et al. 1975, Wallace et al. 1974). Thick cortex layers in the stems of the wild tomato, Lycopersicon hirsutum Dunal, deter feeding by the potato aphid, Macrosiphum euphorbiae (Thomas) (Quiras et al.

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