11 research outputs found
Thymocyte Stimulating Activity of the Serum of Rats in the Early Phase After 2-Acetylaminofluorene (AAF)-Treatment
No full textElectron microscopic immunocytochemistry of prolactin secreting cells (PRL-cells) and growth hormone secreting cells (GH-cells) in the anterior pituitary gland of partially hepatectomized rats
No full textTechniques in Measuring DNA Synthesis and Mitosis Induced by Tumor Promoters in Hepatocyte Primary Cultures
No full textInsulin and glucagon concentrations in the portal and peripheral blood in liver-injured and partially hepatectomized rats
No full textLateral hypothalamic lesions facilitate hepatic regeneration after partial hepatectomy in rats
No full textThe valency state of absorbed iron appearing in the portal blood and ceruloplasmin substitution
No full textQuantification of rat hepatocyte transferrin receptors with poly- and monoclonal antibodies and protein A
No full textGrowth Stimulation Mediated by G Protein Coupled Receptors in Hepatocytes: Synergism with Epidermal Growth Factor and Mechanisms of Signal Transduction
No full textThermotolerance of Fungal Conidia
No full textConidia of entomopathogenic fungi (EF) are the propagules most frequently used in arthropod biocontrol programs. This anamorphic form is essential for the infection process, including spore germination, penetration, vegetative growth, conidiogenesis and dissemination. Most EF are mesophilic and can develop between 10 and 40 °C, but optimal growth is between 25 and 35 °C. Abiotic factors, especially temperature (high or low) can determine their viability, virulence and success or failure of infection process. Temperature has the highest impact on conidial stress inhibiting metabolic processes, such as decreased morphogenesis during germination, protein denaturation and membrane disorganization. Several studies show that some strains of Beauveria spp., Metarhizium spp., and Isaria spp. exhibit conidial survival even when grown at high temperatures, indicating a relationship between conidial thermotolerance and their geographical isolation origin. Moreover, the high variability in fungal thermotolerance is also dependent of the culture media composition and growth condition. EF that grow at high temperatures do not grow at low temperatures and vice versa. Moreover, when growth conditions are not set at optimal temperatures, EF development is affected and their effectiveness in biological control programs of arthropods is reduced. Thermal stress directly impacts on fungal strains ability to target arthropods and their environmental activity performance. The screening for fungal strains with a higher thermotolerance and the improvement on conidial formulations may aid in optimizing the conditions for biocontrol agent application.Fil: PaixĂŁo, Flávia R. S.. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - La Plata. Instituto de Investigaciones BioquĂmicas de La Plata "Prof. Dr. Rodolfo R. Brenner". Universidad Nacional de la Plata. Facultad de Ciencias MĂ©dicas. Instituto de Investigaciones BioquĂmicas de La Plata "Prof. Dr. Rodolfo R. Brenner"; ArgentinaFil: Fernandes, Éverton. Universidade Federal de Goiás; BrasilFil: Pedrini, Nicolás. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - La Plata. Instituto de Investigaciones BioquĂmicas de La Plata "Prof. Dr. Rodolfo R. Brenner". Universidad Nacional de la Plata. Facultad de Ciencias MĂ©dicas. Instituto de Investigaciones BioquĂmicas de La Plata "Prof. Dr. Rodolfo R. Brenner"; Argentin
