Fungi against insects and contrariwise as biological control models

Abstract

Background Biological control of insects is the current goal of modern researches to avoid using the harmful chemicals. Some fungi are capable of infecting and killing insects and, hence, are commonly known as entomopathogenic fungi (EPF). On the other hand, some insects can kill harmful fungal strains using their products such as peptides. Hence, the aim of this review article is to highlight the use of EPF as biocontrol tools against each other. Results EPF are generally characterized by having a wide range of hosts which made them the perfect candidate for biological control missions. They are existing in abundance in the environment and involved in plenty of environmental interactions. They have prestigious enzymatic machinery and toxins that contribute as killing tools. Moreover, after penetrating the insect, the expanded vegetative growth of hyphal bodies enabling the invasion of the fungi throughout the entire tissues of host insect cause physic, histolytic, and pathologic changes ultimately leading to the death of the host insect. On the other hand, some insects can kill harmful fungal strains using their secreted products such as peptides. Conclusion In this review, the use of fungi and insects as biological control agents against each other was described. Furthermore, the history of using EPF for this purpose, their killing mechanism, host range, and the factors affecting EPF virulence were highlighted. Moreover, the role of insect’s immunology and some insect’s products as antifungal agents was presented focusing on peptides with biological activities against fungi. Finally, future prospects concerning the use of insects and fungi in biological control process were discussed.

Entomopathogenic Fungi and their Potential Role in the Sustainable Biological Control of Storage Pests

“…In soil, the excessive proliferation and spread of EPF are limited. Soils with elevated levels of organic matter and more clay than sand have a more significant distribution of EPF whereas alkaline and sandy soils contain less of it (Elkhateeb, 2021). The population forms as a result of converting the materials within the deceased organism into spores capable of causing infection when released.…”

First Report of Clonostachys rosea as a Mycoparasite on Sclerotinia sclerotiorum Causing Head Rot of Cabbage in India

“…In general, Sclerotia are infested and destroyed in the field by a variety of mycoparasites, such as Sporidesmium sclerotivorum , Coniothyrium minitans , Clonostachys rosea , Talaromyces flavus , Trichoderma harzianum , etc., These parasitic fungi attack the surviving structures, pierce and invade the hard outer layer of the sclerotia, colonising the internal cells, and taking nutrients from them, causing them to die [ 10 ]. One of our primary goals was to identify the fungal strain that is selectively responsible for mycoparasitising and targets the pathogen’s resting structure.…”