The chemical diversity, the attractant, anti-acetylcholinesterase, and antifungal activities of metabolites from biocontrol Trichoderma harzianum uncovered by OSMAC strategy.
Bioorg Chem
; 114: 105148, 2021 09.
Article
in En
| MEDLINE
| ID: mdl-34246973
ABSTRACT
Eight new compounds (1-8) were discovered from Trichoderma harzianum associated with edible mushroom by the one strain many compounds (OSMAC) strategy. Triharzianin A (1) is the first naturally scaffold characterized by a C13-prostaglandin skeleton. The configurations of 1-3, and 5 were determined by the Mosher's method, experimental and calculated ECD spectra, and plausible biosynthesis of stereospecific epoxidation. Most compounds indicated obvious feeding attractant activities to silkworm with attraction rates at 30-90%. Compound 7 showed anti-acetylcholinesterase (anti-AChE) activity with a ratio of 29% at a concentration of 50 µM for insecticidal potential. So 2,â3-âdialkylchromone (7) had potential of chemical entrapment and killing of insects. Compounds 2, 3 and 7-11 showed antifungal activities against Aspergillus fumigates, and Trichoderma sp. from mushroom with MICs ≤ 300 µM. The four fermentation extracts also indicated obvious feeding attractant activities to silkworm for the activities brought by active metabolites from T. harzianum. The material base of biocontrol induced by the interaction of host-fungal symbiont can be investigated by the antifungal metabolites against pathogen fungi.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Acetylcholinesterase
/
Aspergillus fumigatus
/
Trichoderma
/
Cholinesterase Inhibitors
/
Antifungal Agents
Limits:
Animals
Language:
En
Journal:
Bioorg Chem
Year:
2021
Document type:
Article