Pyrenocine A is a fungal metabolite that has been found inP. terrestrisand has diverse biological activities.1It inhibits the asexual spore germination of the plantpathogenic fungiF. oxysporum,F. solani,M. hiemalis, andR. stolonifer(EC50s = 14, 20, 20, and 25 μg ml, respectively). Pyrenocine A is active againstB. subtilis,S. aureus, andE. coli(IC50s = 30, 45, and 200 μg ml, respectively). It inhibits onion seedling elongation (EC50= 4 μg ml). Pyrenocine A is also a phytotoxin that inhibits lettuce seed germination and rice seedling elongation.2,3 1.Sparace, S.A., Reeleder, R.D., and Khanizadeh, S.Antibiotic activity of the pyrenocinesCan. J. Microbiol.33(4)327-330(1987) 2.Sato, H., Konoma, K., and Sakamura, S.Phytotoxins produced by onion pink root fungus, Pyrenochaeta terrestrisAgric. BioI. Chem.43(11)2409-2411(1979) 3.Sato, H., Konoma, K., Sakamura, S., et al.X-Ray crystal structure of pyrenocine A, a phytotoxin from Pyrenochaeta terrestrisAgric. BioI. Chem.45(3)795-797(1981)
OM173-αA is a quinone bacterial metabolite that inhibits the growth of the bacteria M. gallisepticum, M. pneumoniae, and S. aureus. OM173-αA also inhibits the growth of the plantpathogenicfungus P. oryzae and several species of Trichophyton.
Ascochin, an isocoumarin derivative and fungal metabolite identified in Ascochyta, demonstrates antimicrobial activity. At a concentration of 0.5 mg disc, it inhibits Bacillus megaterium (the bacterium), Mycosphaerella violaceum (the plantpathogenicfungus), and Chlorella fusca (the alga) in agar diffusion assays.
Piliformic acid is a fungal metabolite that has been found inN. pseudotrichiaand has diverse biological activities.1,2It is cytotoxic to BC-1 human breast cancer cells (IC50= 5 μg ml).2Piloformic acid is active againstL. braziliensisamastigotes (IC50= 78.5 μM). It is also active against the plantpathogenic fungiC. gloeosporioides(MIC = 292 μM).1 1.Elias, L.M., Fortkamp, D., Sartori, S.B., et al.The potential of compounds isolated from Xylaria spp. as antifungal agents against anthracnoseBraz. J. Microbiol.49(4)840-847(2018) 2.Cota, B.B., Tunes, L.G., Maia, D.N.B., et al.Leishmanicidal compounds of Nectria pseudotrichia, an endophytic fungus isolated from the plant Caesalpinia echinata (Brazilwood)Mem. Inst. Oswaldo Cruz113(2)102-110(2018)
Flutolanil is a benzanilide fungicide. It is active against a panel of 241 field isolates of the plantpathogenicfungus R. solani when grown in flutolanil-enriched growth media. Flutolanil inhibits R. solani hyphal growth and infection cushion formation on rice plant leaf sheaths. It is toxic to zebrafish embryos, larvae, and adults. Formulations containing flutolanil have been used to control fungal infections on rice crops.
Linearmycin A is a polyene antibiotic that has been found inStreptomyces.1It is active against the bacteriaS. aureusandE. coli(MICs = 3.1 and 1.6 μg disc, respectively), the fungiS. cerevisiaeandC. albicans(MICs = 0.1 and 1.6 μg disc, respectively), and the plantpathogenicfungusA. nigerin disc assays (MIC = 0.2 μg disc). Linearmycin A induces lysis and degradation ofB. subtilisas a component ofStreptomycesMg1 extract.2 1.Sakuda, S., Guce-Bigol, U., Itoh, M., et al.Novel linear polyene antibiotics: LinearmycinsJ. Chem. Soc., Perkin Trans. 1182315-2319(1996) 2.Stubbendieck, R.M., and Straight, P.D.Escape from lethal bacterial competition through coupled activation of antibiotic resistance and a mobilized subpopulationPLoS Genet.11(12)e1005722(2015)
Kushenol I is a GABAA receptor modulator, it exhibits inhibitory activity against Sodium-dependent glucose cotransporter 2(SGLT2).Kushenol I is shown to be active against the plantpathogenicfungus Cladosporium cucumerinum.