Arne Klingner

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Many plants form yellow coloured roots when colonized by arbuscular mycorrhizal (AM) fungi. In maize, a yellow pigment is first visible as small droplets in parenchyma cells of roots in the vicinity of arbuscules, 3–4 weeks after mycorrhizal colonization. During the course of the development of the plants, the yellow pigment spreads all over the cells of(More)
This study describes an advanced version of a two-compartment scale-down bioreactor that simulates inhomogeneities present in large-scale industrial bioreactors on the laboratory scale. The system is made of commercially available parts and is suitable for sterilization with steam. The scale-down bioreactor consists of a usual stirred tank bioreactor (STR)(More)
This communication compares some biochemical methods for quantifying colonization by arbuscular mycorrhizal (AM) fungi. The degree of mycorrhizal colonization can conveniently be measured by determining fungal specific sterols. AM-colonized plants show a specific synthesis of 24-methylene cholesterol and an enhanced level of campesterol (=24-methyl(More)
Marine bacteria form one of the largest living surfaces on Earth, and their metabolic activity is of fundamental importance for global nutrient cycling. Here, we explored the largely unknown intracellular pathways in 25 microbes representing different classes of marine bacteria that use glucose: Alphaproteobacteria, Gammaproteobacteria, and Flavobacteriia(More)
Nineteen patients with senile brain disease (including 2 with parkinsonian symptoms) were treated with amantadine in an oral dosage of 200--300 mg daily. Seven showed definite clinical benefits such as increased alertness and decreased agitation, and 2 others showed slight benefits. However, in only one instance was the benefit maintained without(More)
Diagnosing client health problems is a well-recognized task for nurses. This study examined the effects of nursing education and experience on that problem-solving process by comparing the performance of four groups of nurses. Junior and senior nursing students, nursing students who were parents, and pediatric nurses solved two computer-presented problems.(More)
In a comparative study of three treatment regimens in patients with obsessive-compulsive or phobic manifestations, the most favourable therapeutic findings were seen in the clomipramine (Anafranil, Geigy Pharmaceuticals) plus behaviour therapy group and the least favourable therapeutic findings in the clomipramine plus simulated behaviour therapy group. The(More)
Variables stemming from standard psychologic tests, psychophysiologic tests, and operant conditioning procedures were employed in assessing the status of 80 psychogeriatric patients with either organic brain syndromes or functional psychoses. Differences were observed in the responses between the two groups. In general, the performance of the patients with(More)