2023 Fiscal Year Final Research Report
Identification of genes responsible for disease resistance in fish and analysis of the genetic impact of novel diseases on wild populations of fish.
Project/Area Number |
20H00431
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Research Category |
Grant-in-Aid for Scientific Research (A)
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Allocation Type | Single-year Grants |
Section | 一般 |
Review Section |
Medium-sized Section 40:Forestry and forest products science, applied aquatic science, and related fields
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Research Institution | Tokyo University of Marine Science and Technology |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
加藤 豪司 東京海洋大学, 学術研究院, 准教授 (50624219)
中本 正俊 東京海洋大学, 学術研究院, 博士研究員 (80447721)
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Project Period (FY) |
2020-04-01 – 2024-03-31
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Keywords | 耐病性 / 養殖 / 細菌性疾病 / 責任遺伝子 |
Outline of Final Research Achievements |
The objectives of this study were to identify the genes responsible for disease resistance traits against bacterial diseases in fish, to elucidate the mechanisms of disease resistance, and to use these responsible genes to determine the genetic impact of novel diseases occurring in natural rivers on wild populations. As a result of this study, two responsible genes were identified with SNPs suggested to be associated with disease resistance traits. We also found that SNP in the responsible gene had altered genotype frequencies in the wild population before and after the disease outbreak. Furthermore, we developed the gene selection technique using the SNPs in the responsible genes and also identified blood cells in which the responsible genes are expressed.
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Free Research Field |
水族遺伝育種学
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Academic Significance and Societal Importance of the Research Achievements |
本研究成果として、耐病性形質との関連性が示唆されたSNPが存在する2つの責任遺伝子を明らかにした。また、責任遺伝子に存在するSNPが、疾病発生前と発生後では、野生集団において遺伝子型頻度が変化していることを捉えた。魚類における細菌性疾病に対する耐病性責任遺伝子の同定は世界初の成果であり、また、疾病発生後の野生集団において責任遺伝子において、耐病性関連SNPの遺伝子型頻度が大きく変化していることも世界初の成果であることから、学術的意義は大きい。さらに、その耐病性関連SNPを利用した遺伝子選抜技術は、養殖業のおける新たな育種技術であり、今後の実産業への応用が期待され、社会的意義がある。
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