• Journal of Applied Biological Chemistry
• /
• v.43 no.2
• /
• pp.104-108
• /
• 2000

The plant growth-promoting activity of Acremonium strictum MJN1 isolated from roots of Panox ginseng was explored. The myceliaI extract of A. strictum MJN1 enhanced the rice seedling growth by 14.5 and 9.0% in the dried weight of shoots and roots, and the growth of red pepper by 54 and 85% in the top length and the dried weight in pot experiments, respectively. The plant growth-promoting substances in the myceliaI extract of Acremonium strictum MJN1 were identified as D-adenosine and glycerol. Both commercial D-adenosine and glycerol also promoted significantly the rice seedling growth but, unlike the mycelial extract of A. strictum MJN1, hardly affected the yields of plants grown in pots or field. Therefore, it is possible that other plant growth-promoting substances are produced by A. strictum MJN1. However, this study shows that A. strictum MJN1 has a great potential as a biofertilizer.

• Journal of Microbiology and Biotechnology
• /
• v.12 no.2
• /
• pp.327-330
• /
• 2002

A plant growth-promoting substance, FM001, was isolated from the culture broth of Acremonium strictum MJN1. The purification steps included solvent extraction, adsorption chromatography using Diaion HP20, TLC on silica, and HLPC using a C-18 column. The purified FM001 enhanced rice seedling growth by $11.1\%\;and\;34.0\%$ of the dried weight of the shoots and roots, and also radish growth by $26.5\%\;and\;23.7\%$ of the top length and dried weight. FM001 also significantly promoted the growth of red pepper by increasing $32.7\%$ of fruit weight and $11.3\%$ as regards the height. FM001 consisted of C, H, O, N, and S, and its molecular weight was determined to be 537.78 Da. The structure of FM001 resembled brassinosteriods, and it would appear to have great potential as an effective bio-fertilizer.