2014 Fiscal Year Final Research Report
Study on the characteristics of the survival strategy and symbiotic microorganisms of plants under drought stress
| Project/Area Number |
24780151
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Forest science
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| Research Institution | Tottori University |
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Principal Investigator |
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| Research Collaborator |
IMADA Shogo
ISOBE Kazuo
YAMANAKA Norikazu
MAIMAITI Ailijiang
ALLEN Michael F.
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | 乾燥ストレス / 共生微生物 / 窒素 / 菌根菌 / メタゲノム解析 / 乾燥地 / 浸透圧調節物質 |
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| Outline of Final Research Achievements |
Plant physiology and root endophytic microorganisms were examined in rainy season and dry season to obtain knowledge about the relationship between mechanism of drought stress tolerance of plants and the symbiotic microorganisms. In order to examine the effect of summer rain, plant physiology and soil microbes after water addition in dry season were also examined. Microbial activity drastically increased after water addition. Increase in nitrogen-fixing bacteria and ammonia oxidizing bacteria were observed. Net nitrification rate and net nitrogen mineralization rate were increased after water addition, but ammonium nitrogen in soil were decreased under the canopy of Larrea tridentata, indicating that the nitrogen was absorbed by the plant. The result indicates that summer rain is important not only for plant water uptake but also nitrogen uptake.
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| Free Research Field |
微生物生態学
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