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Plant growth promotion abilities and microscale bacterial dynamics in the rhizosphere of Lupin analysed by phytate utilization ability
| Title: | Plant growth promotion abilities and microscale bacterial dynamics in the rhizosphere of Lupin analysed by phytate utilization ability |
| Authors: | Unno, Yusuke Browse this author | | Okubo, Kenzo Browse this author | | Wasaki, Jun Browse this author | | Shinano, Takuro4 Browse this author | | Osaki, Mitsuru Browse this author →KAKEN DB |
| Authors(alt): | 信濃, 卓郎4 |
| Issue Date: | Mar-2005 |
| Publisher: | Blackwell Publishing |
| Journal Title: | Environmental Microbiology |
| Volume: | 7 |
| Issue: | 3 |
| Start Page: | 396 |
| End Page: | 404 |
| Publisher DOI: | 10.1111/j.1462-2920.2004.00701.x |
| PMID: | 15683400 |
| Abstract: | In the rhizosphere, phosphorus (P) levels are low due to P uptake into the roots. Rhizobacteria live on carbon (C) exuded from roots, and may contribute to plant nutrition by liberating P from organic compounds such as phytates. We isolated over 300 phytate (Na-inositol hexa-phosphate; Na-IHP)-utilizing bacterial strains from the rhizosheath and the rhizoplane of Lupinus albus (L.). Almost all of the isolates were classified as Burkholderia based on 16S rDNA sequence analysis. Rhizosheath isolates cultured with Na-IHP as the only source of C and P showed lower P uptake at the same extracellular phytase activity than rhizoplane strains, suggesting that bacteria from the rhizosheath utilized phytate as a C source. Many isolates also utilized insoluble phytate (Al-IHP and/or Fe-IHP). In co-culture with Lotus japonicus seedlings, some isolates promoted plant growth significantly. |
| Rights: | (c)2005 Blackwell Publishing Ltd. and The Society for Applied Microbiology. Published jointly with the Society for Applied Microbiology |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/539 |
| Appears in Collections: | 創成研究機構 (Creative Research Institution) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 信濃 卓郎
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