2023 Fiscal Year Final Research Report
Genetic control of long term storage in melons
| Project/Area Number |
19H02948
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 39030:Horticultural science-related
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| Research Institution | Okayama University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
中野 龍平 京都大学, 農学研究科, 准教授 (70294444)
池田 和生 山形大学, 農学部, 准教授 (80555269)
門田 有希 岡山大学, 環境生命科学学域, 准教授 (30646089)
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| Project Period (FY) |
2019-04-01 – 2024-03-31
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| Keywords | メロン / エチレン / GWAS |
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| Outline of Final Research Achievements |
The melon is a juicy and popular fruit. Melons are climacteric fruits and their ripening is controlled by ethylene. This causes rapid ripening and poor shelf-life. This study was conducted to identify mutations in Honeydew and B2, melon varieties with good shelf-life. Segregated populations were created and genetic and GWAS analyses were conducted. Multiple loci were suggested to be involved for the defect in flesh softening trait in B2, but the loci could not be identified. For the defective ethylene synthesis trait in Honeydew, a single locus was predicted to be responsible, and GWAS analysis suggested the presence of the responsible gene on chromosome 8. There are no genes suggested to be involved in ethylene synthesis in this region, which may lead to the discovery of novel genes.
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| Free Research Field |
園芸学
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| Academic Significance and Societal Importance of the Research Achievements |
現在のクライマクテリック型果実の成熟機構に関する研究は成熟期におけるエチレン信号伝達そのものではなく，緑熟期における最初の自己触媒エチレンの合成を行う因子に焦点が移っている．しかし，成熟によって変化する形質は実際にはエチレン信号の下流で働く因子に制御されており，その因子を直接的に操作することが望ましい．本研究では下流で働く未知の因子の存在を示唆するものとなった．
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