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首页> 外文期刊>Journal of environmental science and health >Effects Of Cyanobacteria Producing Microcystins On Seed Germination And Seedling Growth Of Several Agricultural Plants
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Effects Of Cyanobacteria Producing Microcystins On Seed Germination And Seedling Growth Of Several Agricultural Plants

机译：产生蓝藻的微囊藻毒素对几种农业植物种子萌发和幼苗生长的影响

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摘要

The effects of cyanobacteria aqueous extracts containing Microcystin-LR (MC-LR) on the seed germination and growth of Pisum sativum, Lens esculenta, Zea mays and Triticum durum were investigated. Experiments were carried out on a range of doses of the extract (equivalent to 0, 1.6, 2.9, 5.8, 8.7 and 11.6 μg MC-LR/mL). The results confirm that these plants were sensitive to cell-free extracts of a toxic Microcystis and that germination inhibition was dose dependent. One-way analysis of variance (ANOVA) showed that P. sativum is the most sensitive tested species with a 97% germination rate reduction and L. esculenta was the most resistant. At the 8th day, the exposure to the microcystins (MC) resulted in a significant decrease of plant epicotyls length, roots length and a net inhibition of lateral root formation. It is concluded that MC could affect also terrestrial plants seedling germination and growth. Therefore, the use of water for irrigation contaminated by MC could exert negative biochemical effects on seed and plant metabolism which might influence the agricultural crops.
机译：研究了含有微囊藻毒素-LR（MC-LR）的蓝藻水提取物对豌豆，豌豆，玉米和小麦的种子萌发和生长的影响。对一系列剂量的提取物（相当于0、1.6、2.9、5.8、8.7和11.6μgMC-LR / mL）进行了实验。结果证实这些植物对有毒微囊藻的无细胞提取物敏感，并且萌发抑制是剂量依赖性的。单因素方差分析（ANOVA）显示，金黄色葡萄球菌是最敏感的受试物种，其发芽率降低了97％，而蓝景天则最耐。在第8天，暴露于微囊藻毒素（MC）导致植物表胚轴长度，根部长度显着减少以及侧根形成的净抑制。结论是，MC还可能影响陆生植物幼苗的发芽和生长。因此，将水用于MC污染的灌溉可能会对种子和植物的新陈代谢产生不利的生化作用，从而可能影响农作物。

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