文献类型： 外文期刊
作者： Li, Yingxia 1 ; Xu, Dong 2 ; Huang, Xintong 2 ; Sun, Yanmin 2 ; Beardall, John 4 ; Yang, Fan 2 ; Wang, Yapeng 2 ; Sun, Ke 2 ; Tong, Shanying 5 ; Zhang, Xiaowen 2 ; Fan, Xiao 2 ; Wang, Yitao 2 ; Ye, Naihao 2 ;
作者机构： 1.Qingdao Agr Univ, Sch Marine Sci & Engn, Qingdao 266109, Peoples R China
2.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, State Key Lab Mariculture Biobreeding & Sustainabl, Qingdao 266071, Shandong, Peoples R China
3.Qingdao Marine Sci & Technol Ctr, Lab Marine Fisheries Sci & Food Prod Proc, Qingdao 266237, Shandong, Peoples R China
4.Monash Univ, Sch Biol Sci, Clayton, Vic 3800, Australia
5.Ludong Univ, Sch Life Sci, Yantai 264025, Shandong, Peoples R China
关键词： Phaeocystis globosa; nanoplastics; colony; bloom
期刊名称：ENVIRONMENTAL SCIENCE & TECHNOLOGY （ 影响因子：11.3； 五年影响因子：12.4 ）
ISSN： 0013-936X
年卷期： 2025 年 59 卷 26 期
页码：
收录情况： SCI
摘要： The genus Phaeocystis is a globally distributed harmful alga that adversely impacts marine ecosystems. Nanoplastics (NPs) are ubiquitous in marine environments and often co-occur with Phaeocystis blooms. However, the effect of NPs on the colony formation and bloom dynamics of Phaeocystis remains poorly understood. Here, we conducted both indoor and outdoor mesocosm experiments to demonstrate that NPs significantly increased the total cell density, colonial diameter, and colonial density of P. globosa. These enhancements in colonial density and diameter were primarily driven by elevated levels of extracellular polysaccharides as well as key substrates involved in polysaccharide synthesis, including glucose 1-phosphate, adenosine diphosphate glucose, and uridine diphosphate glucose. Concurrently, the accumulation of extracellular polysaccharides was accompanied by the significant upregulation of ten genes associated with N-glycan synthesis. Furthermore, assuming no other environmental changes, our projections indicated that if 0.1% of microplastics (MPs) degrade into NPs, colonial cell densities of Phaeocystis could increase by more than 5% at 242 global locations, with potential maxima approaching 80%. These findings indicate that the ongoing rise in MPs pollution could exacerbate Phaeocystis blooms by enhancing colony formation, posing substantial risks to marine ecosystems.
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