| Project/Area Number |
25450494
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Insect science
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
Kutsukake Mayako 国立研究開発法人産業技術総合研究所, 生物プロセス研究部門, 主任研究員 (90415703)
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| Co-Investigator(Renkei-kenkyūsha) |
SHIGENOBU SHUJI 大学共同利用期間法人 自然科学研究機構 基礎生物学研究所, 生物機能解析センター 生物機能情報解析室, 特任准教授 (30399555)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 社会性アブラムシ / 兵隊階級 / RNAseq / 社会性昆虫 / 兵隊アブラムシ |
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| Outline of Final Research Achievements |
Social insects show interesting biological phenomena such as caste differentiation, social behavior and division of labors. In this study, in order to understand a molecular basis of aphid social systems more deeply, RNA sequencing (RNA-seq) of four eusocial aphids were performed. As a result, we obtained a number of soldier-specific genes that were expressed in a soldier specific manner. Some of them were highly expressed in soldier nymphs of all species examined. In addition, we clarified molecular evolutionary processes of two soldier-specific genes, a cathepsin B gene and a calpain gene, and found that both genes have experienced same evolutionary events such as gene duplications and gain of the soldier-specific expression pattern. It was also found that two kinds of soldier caste that occurred in a gall generation and a secondary generation of a single aphid species utilized common genes, especially muscle- and cuticle-related genes, for their caste differentiation.
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