What does the published scientific research say about Clonostachys rosea?

Clonostachys rosea — also indexed in older literature under the synonyms Gliocladium roseum and Acrostalagmus roseus — is the subject of 8 PubMed records in this catalog's scientific literature index. The peer-reviewed body of work covers its biology, molecular mechanisms, and agricultural applications as a saprophytic filamentous fungus in phylum Ascomycota.

Research on Clonostachys rosea biocontrol consistently focuses on mycoparasitism of fungal plant pathogens. Published studies document activity against Botrytis cinerea (gray mold on tomato), Rhizoctonia solani, Sclerotinia sclerotiorum, and Ganoderma boninense (basal stem rot of oil palm). The literature cites three overlapping mechanisms: secretion of cell-wall-degrading enzymes, production of antifungal secondary metabolites, and induction of plant defense systems. Transcriptomic work has begun mapping the specific gene sets — including glucanase- and chitinase-encoding genes — activated during mycoparasitism.

Researchers have isolated novel secondary metabolites called asperphenalenones from C. rosea cultures; two showed moderate in vitro antibacterial activity against methicillin-resistant Staphylococcus aureus in one study. Plant-growth-promoting effects — increased biomass and nutrient uptake in oil palm seedlings — are also reported in peer-reviewed research, alongside observations of C. rosea acting as a plant endophyte.