Fifteen pesticides were tested in laboratory bioassays on Galendromus occidentalis (Nesbitt), the principal phytoseiid mite predator in Washington apple orchards. We developed a rating system for pesticides using lethal and sublethal effects, and applied the rating system to our results. At the 1 dose, only spinetoram and lambda-cyhalothrin caused >75% acute mortality of females. Carbaryl, azin...

Escherichia coli ingested by PMN promptly stop growing and form no colonies in nutrient agar, but metabolize near normally for up to several hours. The bactericidal/permeability increasing protein (BPI) of PMN also inhibits E. coli growth without initial metabolic impairment. We recently showed that BPI-treated E. coli, although unable to grow in normal nutrient agar, can form colonies in this ...

Escherichia coli ingested by PMN promptly stop growing and form no colonies in nutrient agar, but metabolize near normally for up to several hours. The bactericidal/permeability increasing protein (BPI) ofPMN also inhibits E. coli growth without initial metabolic impairment. We recently showed that BPItreated E. coli, although unable to grow in normal nutrient agar, can form colonies in this me...

BACKGROUND Chlorantraniliprole formulated as a 350 g kg(-1) WG (Altacor 35WG) for management of apple maggot Rhagoletis pomonella (Walsh), blueberry maggot R. mendax Curran and cherry fruit fly R. cingulata (Loew) (Diptera: Tephritidae) was evaluated in laboratory assays and field trials. RESULTS A tarsal contact toxicity bioassay showed that a surface residue of 500 mg L(-1) of chlorantranil...

Chromosomal aberrations induced by x-rays in synchronized Chinese hamster cells correlated well with mortality as the radiosensitivity was made to vary by a factor of 4 by treating the cells with colcemid or 5-bromodeoxyuridine and by irradiating the cells in different parts of the cell cycle. 37% survival was observed when the cells sustained about one aberration per cell. Furthermore, the pos...

The expression of hsp 27 mRNA and protein was determined in cultured human proximal tubule (HPT) cells exposed to lethal and sublethal concentrations of Cd2+ under both acute and extended conditions. Initial procedures demonstrated that HPT cells display the classic stress response following physical and chemical stress. Heat stress (42.5 degrees C for 1 hr) caused an increase in both hsp 27 mR...