Experimental estimation of evolutionary adaptation to cooler climate by Drosophila albomicans during distribution expansion to the temperate zones

白果蝇分布扩展到温带期间对较冷气候的进化适应的实验估计

• 批准号: 23370096
• 负责人: TAMURA Koichiro
• 金额: $ 12.48万
• 依托单位: Tokyo Metropolitan University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23370096/
• 关键词: ゲノム; 遺伝子; 進化; 環境適応; トランスクリプトーム; 次世代シーケンサ; 遺伝子強制発現; ショウジョウバエ; 遺伝学; cDNA; 人為選択; 塩基多様度; 集団解析

This study was aimed at clarifying molecular mechanisms of evolutionary adaptation to low temperature environment, using a fruit fly species (Drosophila albomicans) which has rapidly expanded their geographic distribution from the tropics to temperate zones during a recent few decades. It was shown that a cold tolerance of temperate zone strains was higher than that of tropical strains and that the effect of cold acclimation was an important factor. We then found the genes whose expression level was largely changed during the cold acclimation. Finally, using gene manipulation techniques in Drosophila melanogaster, we simulated the gene expression changes observed during the cold acclimation in Drosophila albomicans and showed that the changes in expression level of some of the genes were responsible for the improvement of cold tolerance.

近几十年来，果蝇的地理分布从热带迅速扩展到温带，本研究旨在阐明果蝇进化适应低温环境的分子机制。结果表明，温带品系的耐冷性高于热带品系，冷驯化的影响是一个重要因素。然后，我们找到了在冷驯化过程中表达水平发生很大变化的基因。最后，利用基因操作技术对果蝇冷驯化过程中观察到的基因表达变化进行了模拟，结果表明部分基因表达水平的变化与果蝇耐冷性的提高有关。

项目成果

アカショウジョウバエの Neo-X, Neo-Y 染色体の遺伝的多様性

果蝇 Neo-X 和 Neo-Y 染色体的遗传多样性

• 发表时间: 2013
• 作者: Yabe T.;^*Takada' S.;里村和浩
• 通讯作者: 里村和浩

Genetic diversity of DNA sequences on the neo-X and neo-Y chromosomes of Drosophila albomicans

白果蝇neo-X和neo-Y染色体DNA序列的遗传多样性

• 发表时间: 2013
• 作者: SATOMURA;Kazuhiro
• 通讯作者: Kazuhiro

Genetic Analysis for Cold Adaptation in Drosophila albomicans

白果蝇冷适应的遗传分析

• 发表时间: 2013
• 作者: TAMURA;Koichiro
• 通讯作者: Koichiro

Cold tolerance and metabolic rate increased by cold acclimation in Drosophila albomicans from natural populations.

• DOI: 10.1266/ggs.88.289
• 发表时间: 2013-10
• 期刊: Genes & genetic systems
• 影响因子: 1.1
• 作者: K. Isobe;Aya Takahashi;K. Tamura

アカショウジョウバエにおける呼吸量の増加に伴う低温耐性の向上

提高果蝇的耐冷性与呼吸增加相关

• 发表时间: 2012
• 作者: 前田享史;竹中基裕;飯田有俊;倉前正志;横山真太郎;野崎翔大;磯部琴葉
• 通讯作者: 磯部琴葉