Local and Systemic Changes in Squash Gene Expression in Response to Silverleaf Whitefly Feeding

AUTOR(ES)

van de Ven, Wilhelmina T. G.

FONTE

American Society of Plant Physiologists

RESUMO

Squash genes (SLW1 and SLW3) induced systemically after silverleaf whitefly feeding were identified. Differences in the local and systemic expression of SLW1 and SLW3 after feeding by the closely related silverleaf and sweetpotato whiteflies were observed. Temporal and spatial studies showed that SLW1 and SLW3 were induced when second, third, and fourth nymphal instars were feeding. Although only barely detected after wounding and bacterial infection, SLW1 and SLW3 RNAs were abundant during water-deficit stress. Treatments with wound/defense signal molecules showed that SLW1 RNAs accumulated in response to methyl jasmonate and ethylene, whereas SLW3 was not regulated by known wound/defense signals, suggesting utilization of a novel mechanism for defense signal transduction. SLW1 RNAs accumulated during floral and fruit development, whereas SLW3 RNAs were not detected during vegetative or reproductive development. The potential roles of SLW1, an M20b peptidase–like protein, and SLW3, a β-glucosidase–like protein, in defense and the leaf-silvering disorder are discussed.

Documentos Relacionados

• Differential Gene Expression in Response to Mechanical Wounding and Insect Feeding in Arabidopsis
• Silverleaf whitefly-resistant common beans: an investigation of antibiosis and/or antixenosis
• Gene expression changes in response to E2F1 activation
• Global Changes in Gene Expression in Response to High Light in Arabidopsis1[w]
• Local and systemic antibody response to oral administration of glucosyltransferase antigen complex.