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Identification of auxin from pseudomonas sp. P7014 for the rapid growth of pleurotus eryngii myceliumopen access
- Authors
- Kang, Y.M.; Cho, K.M.
- Issue Date
- 2014
- Publisher
- Microbiological Society of Korea
- Keywords
- Bioassay; Growth promotion; Indole acetic acid; Pleurotus eryngii; Pseudomonas sp. P7014
- Citation
- Korean Journal of Microbiology, v.50, no.1, pp 15 - 21
- Pages
- 7
- Indexed
- SCOPUS
KCI
- Journal Title
- Korean Journal of Microbiology
- Volume
- 50
- Number
- 1
- Start Page
- 15
- End Page
- 21
- ISSN
- 0440-2413
- Abstract
- The promoting effect of Pseudomonas sp. P7014 on the mycelia growth of Pleurotus eryngii was investigated. An ethyl acetate fraction (F5) from the culture supernatant of the bacteria was confirmed to contain the growth promoting compound (GPC). The GPC was identified to be indole acetic acid (IAA) by TLC, HPLC, MS/MS, and NMR analyses. P. eryngii mycelia grew rapidly both on PDA and in PDB after the treatment of GPC. The promoting concentration of GPC was as low as 1.0 nM. Tryptophan, the aminated form of IAA, was confirmed to be the precursor of IAA. These results suggested that bacterial secreted compound was IAA and plays an important role in promoting growth of mushroom mycelia. ? 2014, The Microbiological Society of Korea.
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