2021 Fiscal Year Final Research Report
how insect immunity affect symbiotic bacteria in Plautia stali
Project/Area Number |
19K06080
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 39050:Insect science-related
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Research Institution | National Agriculture and Food Research Organization |
Principal Investigator |
Nishide Yudai 国立研究開発法人農業・食品産業技術総合研究機構, 生物機能利用研究部門, 主任研究員 (50558096)
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Project Period (FY) |
2019-04-01 – 2022-03-31
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Keywords | 共生 / 抗菌性タンパク質 / 液性免疫 / Defensin |
Outline of Final Research Achievements |
The relationship between symbiotic bacteria and humoral immunity in the brown-winged stink bug Plautia stali was investigated. Since the symbiotic bacteria in P. stali can be replaced, I evaluated the expression of antimicrobial proteins when the bacteria were replaced. The results showed that the expression of various antimicrobial proteins was altered and RNAi of the antimicrobial proteins increased the number of symbiotic bacteria. This indicates that antimicrobial proteins are involved in controlling the number of symbiotic bacteria.
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Free Research Field |
進化学
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Academic Significance and Societal Importance of the Research Achievements |
多くの昆虫は共生細菌無しでは生きることができない一方で、昆虫は自身が有している免疫機構によって、体内に侵入した病原細菌等の異物を排除している。なぜ共生細菌は排除されないのか?ヒトも腸内に細菌を持ち、ある種の細菌は排除しある種の細菌は排除しない。カメムシを用いた本研究では、この疑問を少し解明することが出来た。
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