Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, E-98166, Messina, Italy.
Research Group on Community Nutrition and Oxidative Stress (NUCOX), Department of Fundamental Biology and Health Sciences, University of the Balearic Islands, E-07122, Palma de Mallorca, Spain.
Mar Environ Res. 2019 Sep;150:104763. doi: 10.1016/j.marenvres.2019.104763. Epub 2019 Jul 19.
The introduction of invasive species can lead to significant adverse effects on the colonized areas. The aim of the present research was to determine if the invasive behavior of Paraleucilla magna could induce the activation of the antioxidant defences in the native red algae, Peyssonnelia squamaria. Individuals of isolated P. squamaria and individuals epiphytized by P. magna, both growing on rocky bottoms, were collected. The activity of the antioxidant enzymes - catalase, superoxide dismutase, glutathione peroxidase and glutathione reductase - and the levels of the malondialdehyde were significantly higher in the algae of the epiphytic group compared to the control group, while the detoxifying enzyme glutathione S-transferase did not show significant differences. The levels of reduced glutathione and total polyphenols were higher in the algae affected by the sponge. In conclusion, the arrival of the species P. magna induces an adaptative antioxidant response in P. squamaria determined by the use of biomarkers.
入侵物种的引入可能会对被入侵地区造成重大的负面影响。本研究的目的是确定 Magna 磷虾的入侵行为是否会激活本地红藻 Peyssonnelia squamaria 的抗氧化防御系统。采集了单独生长在岩石底部的 P. squamaria 个体和被 P. magna 附生的个体。与对照组相比，附生组的抗氧化酶（过氧化氢酶、超氧化物歧化酶、谷胱甘肽过氧化物酶和谷胱甘肽还原酶）的活性和丙二醛水平显著升高，而解毒酶谷胱甘肽 S-转移酶则没有显著差异。受海绵影响的藻类中还原型谷胱甘肽和总多酚的水平较高。总之，物种 P. magna 的到来通过生物标志物诱导了 P. squamaria 的适应性抗氧化反应。
