Physiology, Ecology and Biochemistry of Germination

Pesticide Biochemistry and Physiology

Type-II pyrethroids, including deltamethrin, are highly toxic to Paramecium tetraurelia, an organism that does not possess a voltage-sensitive sodium channel. Previous research has established that deltamethrin is toxic to P. tetraurelia in mortality bioassays at concentrations as low as 10210 and 10211 M under resting and depolarizing conditions, respectively. Deltamethrin, likewise, stimulate...

Platelets: physiology and biochemistry.

Platelets are specialized blood cells that play central roles in physiologic and pathologic processes of hemostasis, inflammation, tumor metastasis, wound healing, and host defense. Activation of platelets is crucial for platelet function that includes a complex interplay of adhesion and signaling molecules. This article gives an overview of the activation processes involved in primary and seco...

Microbial Physiology and Biochemistry

Pesticide Biochemistry and Physiology

Blattella germanica (L.) (Dictyoptera: Blattellidae) that were fed fipronil bait produced liquid excretions that were toxic to conspecifics. We have used a combination of analytical and behavioral assays to localize the source, to elucidate the time course, and to evaluate the role of these excretions in facilitation of secondary kill. Fipronil excretion coincided with the onset of the paralyti...

Pesticide Biochemistry and Physiology

CYP6D1 is the cytochrome P450 responsible for pyrethroid resistance in the LPR strain of house fly, which was originally collected from New York and was recently implicated as a mechanism of resistance in house flies from Georgia. We sequenced CYP6D1 from the NG98 strain of house fly from Georgia and found that the CYP6D1 allele in this strain is identical to that found in the LPR strain (CYP6D...