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http://dx.doi.org/10.4489/KJM.2015.43.1.71

Gibberellins Production and Identification of Endophytic Fungi Isolated from Aquatic Plant in Fresh Water  

You, Young-Hyun (School of Life Science, Kyungpook National University)
Kang, Sang-Mo (School of Applied Biosciences, Kyungpook National University)
Choi, Yu-Mi (National Agrobiodiversity Center, National Academy of Agricultural Science, RDA)
Lee, Myung-Chul (National Agrobiodiversity Center, National Academy of Agricultural Science, RDA)
Kim, Jong-Guk (School of Life Science, Kyungpook National University)
Publication Information
The Korean Journal of Mycology / v.43, no.1, 2015 , pp. 71-76 More about this Journal
Abstract
Aquatic plant Hydrocharis dubia (Blume) Backer was collected from the Dalsung wetland in Daegu. Sixteen endophytic fungi with different colony morphologies were isolated from the roots of aquatic plants. Waito-c rice (WR) seedlings were treated with fungal culture filtrates (FCF) for screening plant growth-promoting activity. In the results, HD1008 strain isolated from aquatic plant showed highest plant growth-promoting activity. The FCF of HD1008 strain was analyzed using gas chromatography mass spectrometry (GC/MS) with selected ion monitoring (SIM). Analysis of the FCF of HD1008 strain found that it contained gibberellins (GA) ($GA_1$, 1.2 ng/100 mL; $GA_4$, 5 ng/100 mL). Phylogenetic tree of HD1008 strain was constructed by partial internal transcribed spacer (ITS) region and partial beta-tubulin gene sequences. Therefore, we describe HD1008 strain as a new gibberellin-producing Penicillium trzebinskii based on morphological and molecular characteristics.
Keywords
Endophytic fungi; Fresh water; Gibberellin; Penicillium trzebinskii; Plant growth-promoting activity;
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Times Cited By KSCI : 4  (Citation Analysis)
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