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http://nopr.niscpr.res.in/handle/123456789/20951| Title: | Indole-3-acetic acid from filamentous cyanobacteria: screening, strain identification and production |
| Authors: | Babu, S Venkatesh Ashokkumar, B Sivakumar, N Sudhakarsamy, P Varalakshmi, P |
| Keywords: | Geitlerinema sp.;Indole-3-acetic acid;Leptolyngbya sp. |
| Issue Date: | Sep-2013 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | This study presents Filamentous cyanobacterial isolates for their ability to produce phytohormone indole-3-acetic acid (IAA) by Salkowski’s colorimetric assay method. Among 15 isolates screened, two of them produced auxin-like secretions significantly in BG11/ ASN III media containing 4 mg/ml of tryptophan. Based on 16S rDNA sequence analysis, strains that produce maximum IAA were most closely related to Geitlerinema sp. (99.0% similarity) and Leptolyngbya sp. (95.0% similarity). IAA production was maximum (51.06 μg/ml) when strain Leptolyngbya sp. was cultivated in BG11 media at pH 9.0, whereas Geitlerinema sp. produced a maximum of 67.87 μg/ml in ASN III media at pH 9.0 in 14 days of incubation. This is the first report of IAA production by Geitlerinema sp. and Leptolyngbya sp. |
| Page(s): | 581-584 |
| ISSN: | 0975-1084 (Online); 0022-4456 (Print) |
| Appears in Collections: | JSIR Vol.72(09-10) [September-October 2013] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| JSIR 72(9-10) 581-584.pdf | 206.4 kB | Adobe PDF | View/Open |
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