Uncovering the soil microbial community structure based on humus-metaboilzing activity of actinomycetes
| Project/Area Number |
24580128
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Applied microbiology
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| Research Institution | Nihon University |
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Principal Investigator |
UEDA Kenji 日本大学, 生物資源科学部, 教授 (00277401)
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| Co-Investigator(Kenkyū-buntansha) |
TAKANO Hideaki 日本大学, 生物資源科学部, 助教 (50385994)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | Streptomyces / humic acid / respiration / electron transfer / differentiation / secondary metabolism / humus |
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| Outline of Final Research Achievements |
This study aimed at elucidating how the soil-dwelling gram-positive bacteria actinomycetes contributes to the construction of microbial community structure. Some actinomycetes strains exhibited a marked humus-coagulating and decolorizing activity． The isolation of humus-decolorizing activity of Streptomyces coelicolor A3(2) showed the possible involvement of a membrane-associating diaphorase． The presence of similar extracytoplasmic diaphorase activity in the diverged actinomycetes strains suggested the wide occurrence of energy metabolism based on the reduction of a humic substance(s)． Overall，the evidence suggests that some actinomycetes metabolites widely support the growth and expression of specific functions in other organisms，and that actinomycetes contributes to the construction of a global soil microbial community structure by effectively associating with the formation and dynamics of humus，the substance derived from dead plant that constitutes rich soil environment.
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Report
(4 results)
Research Products
(6 results)
