Growth stimulation of toxic dinoflagellate Prorocentrum cordatum with herbicide glyphosate

IF 1.8 3区生物学 Q3 ECOLOGY

Journal of Experimental Marine Biology and Ecology Pub Date : 2024-05-14 DOI:10.1016/j.jembe.2024.152017

Natalia Shoman, Ekaterina Solomonova, Arkady Akimov

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引用次数: 0

Abstract

Worldwide used glyphosate-based organophosphorus herbicides may be potential phosphorus sources for phytoplankton in coastal waters. In this study, the changes in growth, fluorescent and cytometric parameters of the potentially toxic dinophytic algae Prorocentrum cordatum under the influence of glyphosate of different concentrations were investigated. The effect of glyphosate on the growth dynamics of P. cordatum under conditions of availability and deficiency of inorganic phosphorus in the medium is estimated. Results showed that P. cordatum could grow due to glyphosate as the only source of phosphorus. The final density of the culture was higher than that of the control (without glyphosate) by 22–136% depending on the applied herbicide concentration. Glyphosate stimulated the growth of microalgae, which was observed in increasing the efficiency of the photosynthetic apparatus of cells and their enzymatic (esterase) activity. P. cordatum used glyphosate as a source of phosphorus only when there was a deficiency in inorganic phosphorus, but it was also susceptible to the herbicide when there was inorganic phosphorus present in the medium. An increase of glyphosate concentration in coastal waters may lead to a change in the species structure of natural biocenoses and increase in the number of potentially harmful species.

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除草剂草甘膦刺激有毒甲藻 Prorocentrum cordatum 的生长

全球使用的草甘膦类有机磷除草剂可能是沿海水域浮游植物的潜在磷源。本研究探讨了在不同浓度草甘膦的影响下，具有潜在毒性的二叶藻 Prorocentrum cordatum 的生长、荧光和细胞学参数的变化。估计了草甘膦在培养基中提供和缺乏无机磷条件下对虫草藻生长动态的影响。结果表明，由于草甘膦是唯一的磷源，虫草可以生长。培养物的最终密度比对照组（无草甘膦）高出 22-136%，具体取决于施用的除草剂浓度。草甘膦刺激了微藻类的生长，观察到它提高了细胞光合装置的效率及其酶（酯酶）活性。只有当无机磷缺乏时，虫草属藻类才以草甘膦为磷源，但当培养基中含有无机磷时，虫草属藻类也易受除草剂的影响。沿岸水域草甘膦浓度的增加可能会导致天然生物群落的物种结构发生变化，增加潜在有害物种的数量。

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来源期刊

Journal of Experimental Marine Biology and Ecology 生物-海洋与淡水生物学

CiteScore

4.30

自引率

0.00%

发文量

审稿时长

14 weeks

期刊介绍： The Journal of Experimental Marine Biology and Ecology provides a forum for experimental ecological research on marine organisms in relation to their environment. Topic areas include studies that focus on biochemistry, physiology, behavior, genetics, and ecological theory. The main emphasis of the Journal lies in hypothesis driven experimental work, both from the laboratory and the field. Natural experiments or descriptive studies that elucidate fundamental ecological processes are welcome. Submissions should have a broad ecological framework beyond the specific study organism or geographic region. Short communications that highlight emerging issues and exciting discoveries within five printed pages will receive a rapid turnaround. Papers describing important new analytical, computational, experimental and theoretical techniques and methods are encouraged and will be highlighted as Methodological Advances. We welcome proposals for Review Papers synthesizing a specific field within marine ecology. Finally, the journal aims to publish Special Issues at regular intervals synthesizing a particular field of marine science. All printed papers undergo a peer review process before being accepted and will receive a first decision within three months.