We want to know about the authentic reports/work done on hyper-parasitism on different bio-agents like, Trichoderma, Baeuveria, Metarrhizium, Licanicilium etc. in nature or any other kind of microbial competitors (saprophytic fungi, bacteria, myceliophagous nematode, insects etc) which adversely affect the efficacy of bio-agents under field conditions.
Hyperparasitism is the parasitic habit of one species upon another .You can have the information from the following references:
Ref-
1.Compendium of soil fungi. Volume 1.
2.GC Papavizas, RD Lumsden - Annual Review of Phytopathology, 1980
3. R Baker - Annual Review of Phytopathology, 1968 - annualreviews.org
4. M Gerlagh - Netherlands Journal of Plant Pathology, 1968 - Springer
5. The biology of symbiotic fungi. 1977 pp.xi + 282 pp.
I believe the synthesis review work of Gary Harman at Cornell University is unparalleled for work on Trichoderma as it applies to hyperparasitism and application for plant stimulation. Google Scholar him and review this work.
Hyperparasitism takes place when a parasite lives at the expense of another parasite, either on or inside it. Hyper parasitism is often used in biological plant protection as an alternative to chemical methods. Hyperparasitism has recently been introduced to control‘‘choke disease’’ of grasses .Recently i found an article in Journal of Plant diseases and protection in Sep 2018 which may be helpful.
"Influence of the fungal hyperparasite Trichoderma harzianum on the growth of Epichloë typhina, an agent of choke disease in grasses."
Hyperparisitism was revealed by modification on mycelia and conidia of phytopathogen agents particularly ont soil born as Phytophthora, Rhizoctonia, Fusarium and Botrytis.
Séverac studies showed lysis, destroyed and digestion of contain of structures.
My work was on native Trichoderma spp. which was best for crop protection without harm environment.
All sound like nematode parasites! Article Fungal communities associated with Heterodera glycines and t...
You can see the reference: Compendium of Soil Fungi by: Domsch et. al. 1980.
With regards.
Some bioagent fungi such as Trichoderma spp. can parasite on the pathogenic fungi such as Fusarium spp., Rhizoctonia solani , Pythium spp..etc.
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