Diatom-bacteria interactions: deciphering impacts on algal bloom regulation and toxicity

硅藻-细菌相互作用：解读对藻华调节和毒性的影响

• 批准号: 2272632
• 金额: --
• 依托单位: Plymouth University
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2272632
• 关键词: Diatom; bacteria; interactions; deciphering; impacts

Marine phytoplankton are vital in regulating our global climate, contributing almost half of the biosphere's net primary production. Diatoms are one of the most important phytoplankton groups, generating as much organic carbon as all terrestrial rainforests combined. Diatoms form spatially extensive blooms that exert global-scale influences on biogeochemical cycles and underpin ecosystems. Due to the release of harmful toxins, some diatom blooms can also have a negative impact on marine ecosystems and fisheries.The biotic interactions of diatoms with predators, parasites, competitors and symbionts, can profoundly influence natural diatom populations, and are an important factor regulating bloom dynamics and potential toxicity. Despite the clear importance of such interactions for diatom ecology and marine ecosystem functioning, little is known about the mechanisms diatoms employ to i) recognise and respond to other microbes, or ii) regulate production of harmful toxins. These represents important knowledge gaps that need to be addressed, in order to better understand factors governing diatom bloom formation and toxicity.

海洋浮游植物在调节全球气候方面至关重要，几乎占生物圈净初级生产的一半。硅藻是最重要的浮游植物群体之一，产生的有机碳相当于所有陆地雨林的总和。硅藻形成空间上广泛的水华，对地球化学循环产生全球范围的影响，并支撑生态系统。由于释放有害毒素，一些硅藻水华也会对海洋生态系统和渔业产生负面影响。硅藻与捕食者、寄生虫、竞争者和共生体的生物相互作用会深刻影响天然硅藻种群，并且是调节水华动态和潜在毒性的重要因素。尽管这种相互作用对硅藻生态学和海洋生态系统功能具有明显的重要性，但人们对硅藻用于i）识别和响应其他微生物或ii）调节有害毒素产生的机制知之甚少。这些代表了需要解决的重要知识差距，以便更好地了解控制硅藻水华形成和毒性的因素。