Phytotoxicity and oxidative stress of perfluorooctanesulfonate to two riparian plants: Acorus calamus and Phragmites communis
Phytotoxicity and oxidative stress of perfluorooctanesulfonate to two riparian plants: Acorus calamus and Phragmites communis
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全氟辛烷磺酸盐对两种河岸植物菖蒲和芦苇的植物毒性和氧化应激
DOI：
10.1016/j.ecoenv.2019.04.078
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发表时间：
2019
影响因子：
6.8
通讯作者：
Chen Hao
中科院分区：
文献类型：
--
作者：
Qian Jin;Lu Bianhe;Chen Hui;Wang Peifang;Wang Chao;Li Kun;Tian Xin;Jin Wen;He Xixian;Chen Hao
尽管在阐明全氟辛烷磺酸(PFOS)对环境的影响方面做出了以前的努力并取得了快速进展，但对作为水生生态系统的关键组成部分的河岸植物的影响仍然知之甚少。为研究全氟辛烷磺酸对两种典型河岸植物的毒性效应，对两种典型河岸植物进行了为期48天的水培试验。结果表明，在高浓度(>10 mg L−1)下，全氟辛烷磺酸能够抑制叶绿素的积累(10 mg L−1全氟辛烷磺酸处理48天，下降13.7%~22.2%；50 mg L−1全氟辛烷磺酸处理48天，下降22.4~30.0%)和可溶性蛋白质合成(10 mg L−1全氟辛烷磺酸处理48天，下降2.3~9.0%；50 mg L−1PFOS处理48天，下降10.6~26.8%)。而全氟辛烷磺酸的浓度低于1 mg 的L−1可诱导叶绿素的积累(增加18.6%INA)。灯盏花根，占11.3%。插叶，13.6%INP。共根以1 mg L−1PFOS处理3天)和可溶性蛋白质合成(增加6.1%INA)。菖蒲根含量为18.4%。菖蒲叶，9.7%INP。共根，23.4%INP。共产主义，24.0%的INP。共产叶，1 mg L−1全氟辛烷磺酸，6天)。此外，全氟辛烷磺酸导致氧化应激，表现为丙二醛和过氧化氢浓度的升高，并降低了超氧化物歧化酶等抗氧化酶的活性(降低了10.3%的INP)。共生根(50 mg L−1PFOS处理48天)、过氧化氢酶(过氧化氢酶在50 mg L−1PFOS处理48天下降20.6%~50.3%)和过氧化物酶(测试物种在50 mg L−1PFOS处理48天下降24.9%~37.7%)。两种植物的生物标志物在实验的前半部分(0-24天)变化迅速，在实验的后半部分(24-48天)稳定下来。利用这些生物标志物评价了全氟辛烷磺酸对河岸植物的危害及相关因素。实验表明，P。公社对低浓度(<；10 mg L−1)全氟辛烷磺酸的抗性较强。卡拉默斯。
Despite previous efforts and the rapid progress on elucidating the impact of perfluorooctanesulfonate (PFOS) on the environment, its effects on riparian plants, a key component of aquatic ecosystems, are still poorly understood. A 48-day hydroponic experiment was carried out on two typical riparian species (Acorus calamus and Phragmitescommunis) to examine the toxic effects of PFOS on these plants. The results showed that, at high concentration (more than 10 mg L−1), PFOS could prevent chlorophyll accumulation (reduced by 13.7–22.2% at 10 mg L−1PFOS and 22.4–30.0% at 50 mg L−1PFOS for 48 days) and soluble protein synthesis (reduced by 2.3–9.0% at 10 mg L−1PFOS and 10.6–26.8% at 50 mg L−1PFOS for 48 days). Contrastingly, less than 1 mg L−1of PFOS could induce chlorophyll accumulation (increased by 18.6% inA. calamusroots, 11.3% inA. calamusleaves, and 13.6% inP. communisroots at 1 mg L−1PFOS for 3 days) and soluble protein synthesis (increased by 6.1% inA. calamusroots, 18.4% inA. calamusleaves, 9.7% inP. communisroots, 23.4% inP. communisstems, and 24.0% inP. communisleaves, at 1 mg L−1PFOS for 6 days). In addition, PFOS led to oxidative stress, as revealed by the elevated concentrations of malonaldehyde and hydrogen peroxide, and reduced the activities of antioxidant enzymes such as superoxide dismutase (reduced by 10.3% inP. communisstems at 50 mg L−1PFOS for 48 days), catalase (reduced by 20.6–50.3% in test species at 50 mg L−1PFOS for 48 days), and peroxidase (reduced by 24.9–37.7% in test species at 50 mg L−1PFOS for 48 days). The biomarkers of both plants changed rapidly in the first half of the experiment (0–24 days) and stabilized in the second half of the experiment (24–48 days). The risk and related factors of PFOS on riparian plants were evaluated by using these biomarkers. Experiments showed thatP. communiswas more resistant to low concentration (<10 mg L−1) of PFOS thanA. calamus.