Imidacloprid Insecticide Slows Development of Phony Peach and Plum Leaf Scald

Phony Peach and Peach Mosaic

XYLEM CHEMISTRY MEDIATION OF RESISTANCE TO PIERCE’S DISEASE Project Leader:

INTRODUCTION Xylella fastidiosa (Xf) is a Gram-negative xylem-limited bacterium that causes Pierce’s disease (PD), plum leaf scald, almond leaf scorch, phony peach disease and many other diseases. For many plant species there is no resistant germplasm. Xylem vessels may be filled with exopolysaccharides produced by the bacterium, and pectins, gums and tyloses produced by the plant. There has be...

Epidemiology of Leaf Scald in the Moreton District of Queensland

The incidence and geographic distribution of leaf scald (Xanthomonas albilineans (Ashby) Dowson) in the Moreton district between 1951 and 1975 is described. Most of the infection has been in 471. Increase in incidence of the disease appears to be favoured by periods of high rainfall followed by dry weather. A survey was made, at monthly intervals from January to June 1975, to try to determine l...

Gene expression during imidacloprid-induced hormesis in green peach aphid.

Imidacloprid-induced hormesis in the form of stimulated reproduction has previously been reported in green peach aphid, Myzus persicae. Changes in gene expression accompanying this hormetic response have not been previously investigated. In this study, expression of stress response (Hsp60), dispersal (OSD, TOL and ANT), and developmental (FPPS I) genes were examined for two generations during i...

Acute Human Self-Poisoning with Imidacloprid Compound: A Neonicotinoid Insecticide

BACKGROUND Deliberate self-poisoning with older pesticides such as organophosphorus compounds are commonly fatal and a serious public health problem in the developing world. The clinical consequences of self-poisoning with newer pesticides are not well described. Such information may help to improve clinical management and inform pesticide regulators of their relative toxicity. This study repor...