在藻体 Skeletonema marinoi 中,前列腺素通路的激活在牧草压力下
Roberta Barbarinaldi1, Federica Di Costanzo1, Ida Orefice2
1Ecosustainable Marine Biotechnology Department, Stazione Zoologica Anton Dohrn Napoli, Via Ammiraglio Ferdinando Acton 55, Giardini Molosiglio, 80133, Napoli, Italy.
Marine environmental research
|February 21, 2024
概括
藻会产生涉及防御的前列腺素 (Pgs). 类动物更多地捕食低Pg产生的藻,影响基因表达在这个关键的猎物-捕食者相互作用.
科学领域:
- 海洋生物学 海洋生物学
- 化学生态化学生态学
- 植物浮游生物研究 研究 植物浮游生物研究
背景情况:
- 前列腺素 (Pgs) 是在各种生物体中发现的脂质介质,包括藻.
- 像Skeletonema marinoi这样的二氧化菌株表现出不同的氧利平生产,影响了对捕食者的防御.
- 两个菌株,FE7和FE60,显示Pgs通路酶表达和氧利平水平的差异.
研究的目的:
- 研究藻中氧利和Pgs生物合成途径在暴露于copepod掠食后的基因表达反应.
- 了解Pgs在藻-草相互作用中的作用.
主要方法:
- 在S. marinoi菌株FE7和FE60.0.中对Pgs和氧利平路酶 (脂氧基酶,环氧基酶) 的差异基因表达分析.
- 藻培养物暴露于足虫Temora stylifera的接触.
- 在24小时内对基因表达进行时间过程监测.
主要成果:
- 类动物对FE60菌株的食偏好,该菌株产生的氧利平水平较低,并减少了Pgs酶的表达.
- 氧利和Pgs生物合成酶的基因表达受到copepod存在的影响,特别是在FE7菌株中.
- 环氧化原酶是Pgs合成中的关键酶,在FE60中在6小时的放牧暴露后被上调,与FE7.7不同.
结论:
- 这种Pgs通路似乎复杂地参与了藻-copepod捕食者-猎物相互作用.
- 草的食偏好可能与氧利平和Pgs.介导的化学防御有关.
- 需要进一步的研究才能充分阐明前列腺素在这些生态相互作用中的作用.
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