Cladosporium sphaerospermum as a new plant growth-promoting endophyte from the roots of Glycine max (L.) Merr. |
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Authors: | Muhammad Hamayun Sumera Afzal Khan Nadeem Ahmad Dong-Sheng Tang Sang-Mo Kang Chae-In Na Eun-Young Sohn Young-Hyun Hwang Dong-Hyun Shin Byung-Hyun Lee Jong-Guk Kim In-Jung Lee |
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Institution: | (1) Division of Plant Biosciences, College of Agriculture and Life Science, Kyungpook National University, Daegu, Korea;(2) Centre of Biotechnology and Microbiology, University of Peshawar, Peshawar, Pakistan;(3) Division of Applied Life Science, Gyeongsang National University, Jinju, Korea;(4) Department of Life Science and Biotechnology, Kyungpook National University, Daegu, Korea |
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Abstract: | Endophytic fungi are plant symbionts that produce a variety of beneficial metabolites for plant growth and protection against
herbivory and pathogens. Fourteen fungal samples were isolated from the roots of soybean cultivar Daemangkong and screened
on waito-c rice for their plant growth-promoting capacity. Twelve of the fungal isolates promoted plant growth, while two
inhibited it. The fungal isolate DK-1-1 induced maximum plant growth in both waito-c rice and soybean. The plant growth promotion
capacity of DK-1-1 was higher than the wild type Gibberella fujikuroi. Gibberellin (GA) analysis of culture filtrate of DK-1-1 showed the presence of higher amounts of bioactive GA3, GA4, and GA7 (6.62, 2.1 and 1.26 ng/mL, respectively) along with physiologically inactive GA5, GA15, GA19, and GA24. Phylogenetic analysis of 18S rDNA sequence identified the fungal isolate as a new strain of Cladosporium sphaerospermum. Gibberellin production and plant growth-promoting ability of genus Cladosporium are reported for the first time in the present study.
Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users. |
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Keywords: | Cladosporium sphaerospermum Gibberellins Plant growth Endophytic fungi 18S rDNA Waito-c rice |
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