SUMMARY The mitosporic fungus Spilocaea oleagina is an obligate biotroph of olive (Olea europaea) causing a scab disease associated with leaf fall and substantial losses in production. Using differential display we have identified 162 cDNA fragments corresponding to transcripts that show altered abundance during the defence response of a resistant olive cultivar to S. oleagina. Detailed analyse...

Events in a sequence may each be evaluated as good or bad. We propose that such good-bad evaluations evoke emotional responses that change current mood. A model of recurrent updating of current mood is developed and compared to a model of how a sequence of events evoking emotional responses is evaluated retrospectively. In Experiment 1, 149 undergraduates are presented sequences of lottery outc...

Macrophages treated with polystyrene beads of different sizes show adaptive responses but no inflammatory responses.

  Numerous studies conducted in laboratory animals and humans indicate that angiotensin converting enzyme inhibitors reinforce memory and learning. In this paper we study the effect of injection of enalapril into the cerebral ventricles on spatial memory of white mice in the double- y maze, following the induction of an Alzheimer- like amnestic model with scopolamine. To estimate the duration o...

ABSTRACT The effects of temperature and duration of wetness (relative humidity >/=95%) on infection of three peanut cultivars by Cercospora arachidicola were determined under controlled conditions. Plants of the Spanish cv. Spanco and the runner cvs. Florunner and Okrun were exposed to constant temperatures of 18 to 30 degrees C during 12-h periods of wetness each day that totaled 12 to 84 h fo...

Lolium perenne cultivars differing in their capacity to accumulate water soluble carbohydrates (WSCs) were infected with three strains of fungal Neotyphodium lolii endophytes or left uninfected. The endophyte strains differed in their alkaloid profiles. Plants were grown at two different levels of nitrogen (N) supply in a controlled environment. Metabolic profiles of blades were analyzed using ...

All organisms respond to environmental stresses (e.g., heavy metal, heat, UV irradiation, hyperoxia, food limitation, etc.) with coordinated adjustments in order to deal with the consequences and/or injuries caused by the severe stress. The nematode Caenorhabditis elegans often exerts adaptive responses if preconditioned with low concentrations of agents or stressor. In C. elegans, three types ...

in recent years most activities of rice research institute, has been focused on introduction of high yielding as well as high quality rice cultivars. in 1994, 185 lines introduced from international rice research institute (irri) to rice research institute of iran (rrii), were evaluated in observational and statistical experiments in rrii for two years, and eight lines were selected. these line...