光千足动物 (Diplopoda:Xystodesmidae) 的生物光及其与生物发光的关系
1Department of Physics, Chemistry and Mathematics, Center for Sustainable Sciences and Technologies (CCTS), UFSCar, Sorocaba, SP, Brazil. viviani@ufscar.br.
Scientific reports
|December 13, 2023
概括
千足动物表现出蓝色光和绿色光从他们的皮肤上. 这种光,与生物发光相似,表明相关的千足动物物种的光产生源是化学发光.
科学领域:
- 动物学 动物学
- 生物化学 生物化学
- 生物物理学的生物物理.
背景情况:
- 生物体表现出生物发光 (BL),超弱化学发光和生物光 (FL).
- 在Xystodesmidae家族的千足动物中已知BL和FL,包括Motyxia sequoiae.
- 光,一种发光形式,以前没有在千足动物中报告过.
研究的目的:
- 为了研究千足动物的新奇发光现象.
- 为了描述千足的光和光.
- 探索千足动物中化学发光与生物发光之间的潜在联系.
主要方法:
- 在夜间使用紫外线对千足动物进行实地观测.
- 皮层光和光的光谱分析.
- 使用薄层染色学 (TLC) 进行发光化合物的化学提取和分离.
- 化学发光测试用过氧化和超氧化进行测试.
主要成果:
- 三种千足动物 (Deltotaria brimleii,Deltotoria sp,Euryus orestes) 呈现出蓝色光和绿色光 (λmax = 525 nm).
- 光与皮质和颗粒有关;提取的化合物显示光光谱类似于6-丁碳酸酸.
- 在Deltotoria和Euryus提取物中没有检测到生物发光,但观察到弱绿色化学发光.
结论:
- 在Deltotoria和Euryus千足中观察到的光是一种新的发现.
- 光和Motyxia生物发光之间的光谱重叠表明了共享的潜在机制.
- 化学发光反应优先产生三重激发状态可能解释Motyxia中的生物发光.
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