2007 Fiscal Year Final Research Report Summary
Investigation of functional rhizo-biocomplex on highly adverse soil-adapting plants and application of the functional rhizo-biocomplex to agro-technology.
| Project/Area Number |
16208032
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Boundary agriculture
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| Research Institution | Hokkaido University |
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Principal Investigator |
HASHIDOKO Yasuyuki Hokkaido University, Res.Fac.of Agriculture, Professor (40281795)
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| Co-Investigator(Kenkyū-buntansha) |
TAMAI Yutaka Hokkaido University, Res.Fac.of Agriculture, Associate Professor (50281796)
HARAGUCHI Akira Universityof Kitakyushu, Fac.of Environmental Engineering, Professor (50271630)
MATSUURA Hideyuki Hokkaido University, Res.Fac.of Agriculture, Associate Professor (20344492)
IWAHASHI Hitoshi National Institute of Advanced Industrial Science and Technology, Human Stress Signal Research Center, Institute Head (60356540)
TAWARAYA Keitarou Yamagata University, Fac.of Agriculture, Professor (70179919)
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| Project Period (FY) |
2004 – 2007
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| Keywords | Medium-strongly acidic tropical peat soil / Permafrost soil / Microbial growth-promoting principles / Free-living nitrogen-fixing bacteria / Plant-growth promoting non-mvcorrhizal fungi / Rhizo-biocomplex / Carbon-sink formation / Sphingomonad bacteria |
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| Research Abstract |
Using local peat soil from Central Kalimantan, Indonesia, a saprophytic soil fungus Penicillium sp. Isolate Y-1 from X. complanata seedbed was tested its seed-germination promotion activity. The seeds germinated well by means of inoculation with Y-1 fungus, but the resulting seedlings were all died after one month-incubation in the local peat soil bed. Only when the supernatant of the local soil suspension without sterilization was further inoculated to the seedbeds, the germinated seedlings that had been inoculated with Y-1 resulted in survival and normal growth of the seedlings over 6 month. This suggested that saprophytic fungi stimulate seed germination, while some soil bacteria provide nutrients to the germinated seedlings. On the other hand, in Siberian Taiga forest bed soil, oligotrophic Burkholderia and Pseudomonas occupied soil microflora, and they showed a relatively high acetylene reduction activity at 10-15℃,under a lower concentration of carbon source (0.02-0.05%). Including medium pH, these soil bacteria were highly adapted to culture conditions agreeable to the permafrost soil, so that physicochemical conditions similar to activated permafrost soil in summer seasons resulted in relatively higher nitrogen-fixing activity. Moreover, gellan gum as gel matrix allowed the bacteria to show maximal nitrogen-fixing potential. Under a field condition of newly accumulated volcanic ash soil accumulated extreme soil land in Mt. Usu, Hokkaido, the land allowed pioneer plants to possess mycorrhizal symbionts and grew dominantly. Particularly, those of willow tree saplings constitutively possessed ectomycorrhizal fungi, while herbivorous weeds, except horsetail and rasp, allowed symbiosis with arbuscular mycorrhizal fungi. Thus, it was found that pioneer plants distributing throughout fresh volcanic ash soil in Mt. Usu were dependent on mycorrhizal infection.
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Research Products
(55 results)
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[Journal Article] Emergence and behaviors acid-tolerant Janthinobacterium sp. that evolves N_2O from deforested tropical peatland2008
Author(s)
Y., Hashidoko, F., Takakai, Y., Toma, U., Darung, L., Melling, S., Tahara, R., Hatano
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Journal Title
Soil Biology and Biochemistry 40
Pages: 116-125
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Isolation and identification of potential phosphatase solubilizing bacteria from the rhizoplane of Oryza sativa L. cv. BR29 of Bangladesh2007
Author(s)
M.T., Islam,A., Deora,Y., Hashidoko,A., Rahman,T., Ito, S., Tahara
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Journal Title
Zeitschrift fur Naturforschung 62c
Pages: 103-110
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Screening of rhizobacteria from dipterocarp youngsters for promotion of early growth of Shorea selanica seedlings2007
Author(s)
I.R., Sitepu,Aryanto,N., Ogita,M., Osaki,E., Santoso,S., Tahara,Y., Hashidoko
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Journal Title
Tropics 16
Pages: 245-252
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Isolation and structure elucidation of Peronosporomycetes hyphal branching-inducing factors produced by Pseudomonas jessenii EC-S1012007
Author(s)
E., Hatano,Y., Hashidoko,A., Deora,Y., Fukushi,S., Tahara
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Journal Title
Bioscience, Biotechnology and Biochemistry 72
Pages: 1601-1605
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Requirement for particular seed-borne fungi for seed germination and seedling growth of Xyris complanata, a pioneer monocot in top soil-lost tropical peatland in Central Kalimantan, Indonesia.2007
Author(s)
R., Tamura, Y., Hashidoko, N., Ogita, S.H., Limin, S., Tahara
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Journal Title
Ecological Research
Pages: www
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Composition of culture medium influences zoosporogenesis and differentiation of Aphanomyces cochlioides2007
Author(s)
M.D., Islam, M., Sakasai, Y., Hashidoko, A., Deora, Y., Sakihama, S., Tahara
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Journal Title
Journal of General Plant Pathology 73
Pages: 324-329
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Presentation] Searching for potent nitrogen suppliers applicable to reforestation and plantation in tropical peat soil2007
Author(s)
Y., Hashidoko, I.R., Sitepu, L., Melling, N., Ogita, S., Tahara
Organizer
Soil Science Conference of Malaysia 2007
Place of Presentation
Mukah, Sarawak, Malaysia
Year and Date
20070417-19
Description
「研究成果報告書概要(和文)」より
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