A5048924727- Plant Pathogens and Fungal Diseases
- Mycorrhizal Fungi and Plant Interactions
- Plant Physiology and Cultivation Studies
- Plant Pathogens and Resistance
- Plant-Microbe Interactions and Immunity
- Plant and fungal interactions
- Plant Parasitism and Resistance
- Plant tissue culture and regeneration
- Plant and animal studies
- Yeasts and Rust Fungi Studies
- Plant Disease Management Techniques
- Nematode management and characterization studies
- Fungal Biology and Applications
- Plant and Fungal Interactions Research
- Agronomic Practices and Intercropping Systems
- Nail Diseases and Treatments
- Phytochemical Studies and Bioactivities
- Agriculture, Plant Science, Crop Management
- Wheat and Barley Genetics and Pathology
- Plant Pathogenic Bacteria Studies
- Phytochemicals and Antioxidant Activities
- Berry genetics and cultivation research
- Mycotoxins in Agriculture and Food
- Flowering Plant Growth and Cultivation
- Legume Nitrogen Fixing Symbiosis
Leibniz University Hannover
2005-2021
Herrenknecht (Germany)
2018
Institute of Plant Protection
1983-2007
Hanover College
2003
Institut für Pflanzenkultur (Germany)
1985-1987
Abstract Growth depression of Rosa plants at sites previously used to cultivate the same or closely related species is a typical symptom rose replant disease (RRD). Currently, limited information available on causes and etiology RRD compared apple (ARD). Thus, this study aimed analyzing growth characteristics, root morphology, metabolites, as well microbial communities in rhizosphere susceptible rootstock corymbifera ‘Laxa’ grown RRD-affected soil from two (Heidgraben Sangerhausen), either...
Abstract Apple replant disease (ARD) negatively affects growth and yield of apple plants worldwide. Fungi belonging to the Nectriaceae have often been isolated from roots grown in soils thus are proposed among others as one biotic cause complex. Microscopic analyses ARD-affected revealed characteristic symptoms associated with fungal infection sites. Here, two extraction methods such tissue sites were applied directly identify an unknown fungus that forms typical cauliflower-like structures...
Apple Replant Disease (ARD) is a significant problem in apple orchards that causes root tissue damage, stunted plant growth, and decline fruit quality, size, overall yield. Dysbiosis of root-associated microbiome selective richness Streptomyces species the rhizosphere typically concurs impairment associated with ARD. However, possible roles secondary metabolites within these observations remain unstudied. Therefore, we employed One Strain Many Compounds (OSMAC) approach coupled to...
Plant protection against soil-borne diseases has been a challenge in horticultural production of Ericaceae for long time. We tested the hypothesis that ericoid mycorrhizal fungi (ERMF) control root pathogens. Isolates ERMF previously obtained from Calluna vulgaris and Rhododendron hirsutum were selected based on growth inhibiting activity Oomycetes dual agar plate tests. In addition, we assessed their impact economically important Pythium spec. Phytophthora cinnamomi sterile plantlets liquid...
Abstract Replant disease is a worldwide phenomenon affecting various woody plant genera and species, especially within the Rosaceae. Compared to decades of intensive studies regarding replant apple (ARD), roses (RRD) has hardly been investigated. The etiology RRD also still unclear remedy desperately needed. In greenhouse pot trials with seedlings RRD-sensitive rootstock Rosa corymbifera ‘Laxa’ cultured in affected soils from two different locations, early symptom development was studied...
felder Sämling' showing symptoms of apple replant disease (ARD) were histologically examined to clarify the relationships microbial endophytes tisin Northern Germany or cultivated in greenhouse these three locations.Based on previous microscopic detection characteristic ARD whole roots, thin sections selected root segments crosis and blackening for colonization with a focus fungi Actinobacteria.Nectriaceae ing cell necrosis cortical tissue frequently present all tested samples ARD-affected...
Plant associated endophytic Acremonium species are capable of interacting with the host plant and altering its response towards pathogens pests. Specialized root-colonizing spp. can achieve biocontrol effects based on induced disease resistance in whole assays. However, these fungi hard to detect study root tissue by classical methods light microscopy or microbiology. To enable further progress investigations mechanisms defence plant, better visualization symbiont strictum was attempted use...
Abstract The use of 2‐hydroxyethyl‐methacrylate (GMA) as embedding medium for histological investigations in phytopathology A new plastic technique is described subsequent thin sectioning plant tissues. In comparison to the paraffinmethod GMA polymerization system less time consuming. excellent preservation well‐fixed tissue fully asserted, not removed from sections. lightmicroscopic studies convincing results were obtained with different staining procedures; specific evidence...
Garden rose production involves field culture for rootstock and cultivation of grafted plants. When roses are replanted at the same site, reduced growth, stunting discoloration roots observed. This phenomenon is well-known as replant disease (RRD), which results in considerable economic losses. Until now, causes RRD largely unknown measures to overcome lacking. In contrast apple, research on scarce. this study, we have carried out a greenhouse pot experiment, using either untreated or gamma...
Abstract Investigations for the race analysis of P. hordei (location Cologne, W.‐Germany) showed, that most resistant genotypes in International differential set with Pa 1 to 8 were ineffective purpose. Out 80 selected barley different degree resistance against field‐collection RG 1975 hosts a strongly differentiating effect chosen. This was done using three parameters: mean x̄w, its standard deviation x̄w and range z. They calculated from evaluating reaction types infected 116...
Abstract Effects of defense reactions on plant growth and yield in incompatible host‐parasite‐systems Investigations (barley – Erysiphe graminis lettuce Bremia lactucae ) were carried out to prove, whether the induction leads measurable effects performance plants. Permanent or frequent inoculations with avirulent races decreased barley remarkably, expressed reduced fresh weight drym, atter. Less grains produced their contents carbohydrates amino acids diminished significantly. In young...