Abstract
Plant growth-promoting endophytic fungi with gibberellin-producing ability were isolated from the roots of Carex kobomugi Ohwi, a common sand-dune plant, and bioassayed for plant growth-promotion. A new strain, Arthrinium phaeospermum KACC43901, promoted growth of waito-c rice and Atriplex gemelinii. Analysis of its culture filtrate showed the presence of bioactive GA1 (0.5 ng/ml), GA3 (8.8 ng/ml), GA4 (4.7 ng/ml) and GA7 (2.2 ng/ml) along with physiologically inactive GA5 (0.4 ng/ml), GA9 (0.6 ng/ml), GA12 (0.4 ng/ml), GA15 (0.4 ng/ml), GA19 (0.9 ng/ml) and GA24 (1.8 ng/ml). The fungal isolate was identified through sequence homology and phylogenetic analysis of 18S rDNA (internal transcribed region).
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Acknowledgment
This research is a part of ‘Eco-technopia 21 project’ supported by the Korea Ministry of Environment.
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Khan, S.A., Hamayun, M., Kim, Hy. et al. A new strain of Arthrinium phaeospermum isolated from Carex kobomugi Ohwi is capable of gibberellin production. Biotechnol Lett 31, 283–287 (2009). https://doi.org/10.1007/s10529-008-9862-7
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DOI: https://doi.org/10.1007/s10529-008-9862-7
Keywords
- Arthrinium phaeospermum
- Carex kobomugi Ohwi
- Gibberellin production
- Growth-promoting fungi
- Sand-dune flora