Cell wall preparations (elicitors) from Phytophthora megasperma var. sojae increase C(2)H(4) formation, phenylalanine ammonia lyase activity, and glyceollin accumulation in soybean cotyledons within about 1.5, 3, and 6 hours after treatment, respectively. The immediate precursor of C(2)H(4), 1-aminocyclopropane-1-carboxylic acid, stimulates C(2)H(4) formation like the elicitor within 1.5 hours ...

Behavior Representations for Self-Assessment Scott A. Wallace Washington State University Vancouver 14204 NE Salmon Creek Ave. Vancouver, WA 98686 [email protected]

The study of knowledge has always been one of the central issues of the AI research. The general belief has been that "the more you have it the better you are." It was well understood that incorrect knowledge is harmful and should be avoided, but correct knowledge had been mostly considered beneficial. The potential harmfulness of correct knowledge received attention in very few early works but...

Introduction: Bacteria have at least one sigma factor (σ-factor) that transcribes the genes required for cell viability. Usually, transcription of σ-factors occurs and changes in response to a variety of environmental stresses. Expression of σ-factors is one of the strategies which is used in response to different stress conditions. This study was aimed to evaluate the effects...

We present the results of a wide-field survey for H -emitting galaxies in the cluster AC 114 at z = 0:32. Spectra centred on H at the cluster redshift have been obtained for 586 galaxies to Itot 22 out to a radius of 2 h−1 50 Mpc. At most, only 10% of these were found to be H –emitting cluster members. These objects are predominantly blue and of late-type spiral morphology, consistent with them...