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Biology and biocontrol potential of Ampelomyces mycoparasites, natural antagonists of powdery mildew fungi
Ampelomyces mycoparasites have now become one of the most advanced in terms of commercial development of a fungal biocontrol agent, although there is still a need for more development work to produce a product with reliability approaching that of conventional chemical treatments.
Genetic diversity of Ampelomyces mycoparasites isolated from different powdery mildew species in China inferred from analyses of rDNA ITS sequences
The ITS sequences of some isolates obtained in China were identical with those of some European and/or North American isolates which indicates a global distribution of these mycoparasite, and no correlation was found between the ITS sequences and the host fungi and host plants where they came from.
Ampelomyces mycoparasites from apple powdery mildew identified as a distinct group based on single-stranded conformation polymorphism analysis of the rDNA ITS region.
P. leucotricha starts its life-cycle early in the season, usually in March-April, while most powdery mildews are active in the same environments only late in the year, and may be because the main growth period of Ampelomyces mycoparasites in apple Powdery mildew is isolated in time from that of Am Pelomyces isolates that occur in other species of the Erysiphaceae.
Paecilomyces farinosus destroys powdery mildew colonies in detached leaf cultures but not on whole plants
- Orsolya Szentiványi, K. Varga, R. Wyand, H. Slatter, L. Kiss
- BiologyEuropean Journal of Plant Pathology
- 23 May 2006
It is concluded that P. farinosus cannot be considered as a promising BCA of powdery mildew infections although it can destroy powderY mildew colonies in detached leaf cultures and can be a menace during the maintenance of such cultures of cereal, apple, cucurbit and tomato powdery Mildew isolates.
Powdery mildew on snowberry in Hungary caused by Erysiphe symphoricarpi (syn. Microsphaera symphoricarpi)
Overwintering of Ampelomyces mycoparasites on apple trees and other plants infected with powdery mildews
It is demonstrated that Ampelomyces mycoparasites can survive the winter in the field as pycnidia and as resting hyphae in the dried mycelia of their mycohosts.
Spread of the North American snowberry powdery mildew fungus, Erysiphe symphoricarpi (syn. Microsphaera symphoricarpi), to Europe
A phylogenetic analysis of the internal transcribed spacer (ITS) sequences of the ribosomal DNA (rDNA) of an English and a North American snowberry powdery mildew fungus showed that they are conspecific.
Microcyclic conidiogenesis in powdery mildews and its association with intracellular parasitism by Ampelomyces
Microcyclic conidiogenesis (MC), a process defined as the production of conidia on a spore without any, or only a minimal, involvement of hyphal growth, has recently been reported in a little known…
Infection of bean with cucumber powdery mildew, Podosphaera fusca
First report of powdery mildew on Sedum alboroseum in Europe
Based on phological characteristics, the pathogen was identified as a powdery mildew anamorph belonging to the genus E. coli (E.coli), sold as potted ornamental plants in Budapest, causing severe defoliation.