Mycobiology.  2008 Dec;36(4):242-248. 10.4489/MYCO.2008.36.4.242.

Inhibitory Effect of Algal Extracts on Mycelial Growth of the Tomato-Wilt Pathogen, Fusarium oxysporum f. sp. lycopersici

• Kim J
• Kim JD

• KMID: 1487353
• DOI: http://doi.org/10.4489/MYCO.2008.36.4.242

Abstract

The present study was undertaken to explore the inhibitory effect of cyanobacterial extracts of Nostoc commune FA-103 against the tomato-wilt pathogen, Fusarium oxysporum f. sp. lycopersici. In an optimal medium, cell growth, antifungal activity, and antifungal compound production could be increased 2.7-fold, 4.1-fold, and 13.4-fold, respectively. A crude algal extract had a similar effect as mancozeb at the recommended dose, both in laboratory and pot tests. In vitro and in vivo fungal growth, spore sporulation and fungal infection of wilt pathogen in tomato seeds were significantly inhibited by cyanobacterial extracts. Nostoc commune FA-103 extracts have potential for the suppression of Fusarium oxysporum f. sp. lycopersici.

Keyword

Algae; Algal extract; Antifungal activity; Cyanobacteria; Fusarium oxysporum f. sp. lycopersici; Nostoc commune; Tomato

MeSH Terms

Azepines
Cyanobacteria
Fluoroquinolones
Fusarium
Lycopersicon esculentum
Maneb
Nostoc commune
Seeds
Spores
Zineb
Azepines
Fluoroquinolones
Maneb
Zineb