油酸通过一种臭味结合蛋白质触发了白种群的埋葬行为
Hongyue Li1, Jiahan Liu2, Qian Wang1
1College of Advanced Agricultural Sciences, Zhejiang A&F University, Hangzhou, China.
Insect biochemistry and molecular biology
|February 18, 2024
概括
虫使用社会免疫行为埋葬尸体. 一种新发现的气味结合蛋白 (OBP),CforOBP7,携带油酸并触发了Coptotermes formosanus中的这一关键的埋葬反应.
科学领域:
- 昆虫的行为昆虫的行为
- 化学生态化学生态学
- 社会豁免权社会豁免权
背景情况:
- 社会昆虫,像白一样,表现出社会免疫行为,以保持殖民地健康.
- 埋葬行为对于防止在白群中的尸体传播疾病至关重要.
- 来自尸体的油酸是已知的埋葬行为的触发因素,但嗅觉机制尚不清楚.
研究的目的:
- 研究嗅觉系统在调解白埋葬行为中的作用.
- 为了识别特定的气味结合蛋白 (OBPs) 参与检测尸体衍生的线索,如油酸.
主要方法:
- 在白天线中对OBP的基因表达分析.
- 光竞争结合测试以确定OBP-联结物相互作用.
- RNA干扰 (RNAi) 静止CforOBP7表达并评估行为变化.
主要成果:
- 科普托特梅斯 (Coptotermes formosanus) 臭味结合蛋白7 (CforOBP7) 在工人天线中高度表达.
- CforOBP7对油酸具有强烈的结合亲和力.
- 沉默CforOBP7显著降低了对油酸的天线反应,并抑制了埋葬行为.
结论:
- CforOBP7是白中油酸的关键嗅觉受体.
- 这种OBP在控制Coptotermes formosanus的油酸触发的埋葬行为方面发挥着至关重要的作用.
- 这些发现阐明了白社会免疫的基础的特定分子机制.
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