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Diversity and Plant Growth Promotion of Fungal Endophytes in Five Halophytes from the Buan Salt Marsh

Journal of Microbiology and Biotechnology 2021년 31권 3호 p.408 ~ 418
Khalmuratova Irina, 최두호, 윤혁준, Yoon Tae-Myung, 김종국,
소속 상세정보
 ( Khalmuratova Irina ) - Kyungpook National University School of Life Sciences and Biotechnology
최두호 ( Choi Doo-Ho ) - Kyungpook National University School of Life Sciences and Biotechnology
윤혁준 ( Yoon Hyeok-Jun ) - Kyungpook National University School of Life Science and Biotechnology
 ( Yoon Tae-Myung ) - Kyungpook National University Department of Horticultural Science
김종국 ( Kim Jong-Guk ) - Kyungpook National University School of Life Science and Biotechnology

Abstract


The diversity and plant growth-promoting ability of fungal endophytes that are associated with five halophytic plant species (Phragmites australis, Suaeda australis, Limonium tetragonum, Suaeda glauca Bunge, and Suaeda maritima) growing in the Buan salt marsh on the west coast of South Korea have been explored. About 188 fungal strains were isolated from these plant samples’ roots and were then studied with the use of the internal transcribed spacer (ITS) region (ITS1-5.8S-ITS2). The endophytic fungal strains belonged to 33 genera. Alternaria (18%) and Fusarium (12.8%), of the classes Dothideomycetes and Sordariomycetes, were most rampant in the coastal salt marsh plants. There was a higher diversity in fungal endophytes that are isolated from S. glauca Bunge than in isolates from other coastal salt marsh plants. Plant growth-promoting experiments with the use of Waito-C rice seedlings show that some of the fungal strains could encourage a more efficient growth than others. Furthermore, gibberellins (GAs) GA1, GA3, and GA9 were seen in the Sa-1-4-3 isolate (Acrostalagmus luteoalbus) culture filtrate with a gas chromatography/mass spectrometry.

키워드

Coastal salt marsh plants; fungal endophytes; Buan salt marsh; growth promotion; gibberellin

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