鄱阳湖洲滩植物虉草浸泡液对铜绿微囊藻生长的影响

Effect of Poyang Lake Wet Plant Phalaris arundinacea L Soaking Solution on the Growth of Microcystis aeruginosa

为了解鄱阳湖洲滩植物虉草浸泡液对铜绿微囊藻生长的影响,在室内控光、控温、无菌的光照培养条件下采用批式培养的方法。实验结果:虉草浸泡液对铜绿微囊藻生长的影响随虉草含量而发生变化,呈现"低促高抑"的现象,抑制率在-151%～92%,虉草含量为12 g/L时,抑制效果由促进变为抑制。虉草浸泡液使铜绿微囊藻细胞丙二醛(MDA)累积,单位细胞内MDA含量较对照组高2～3倍,加剧细胞膜脂过氧化,藻细胞内活性降低;同时虉草浸泡液破坏藻细胞膜结构,藻细胞内物质外渗,藻细胞膜透性增加21倍,虉草浸泡液对铜绿微囊藻的生长产生影响。本实验结果为虉草浸泡液化感抑藻,也为阐明鄱阳湖洲滩植物对藻类水华的影响提供基础数据。

In order to understand the effect of Poyang Lake Beach plant Phalaris arundinacea L.on the growth of Microcystis aeruginosa, batch culture method was adopted under indoor light, temperature and sterile light conditions. The result showed that The growth of Microcystis aeruginosa was affected by the extract of Prunella vulgaris varying with the content of Prunella vulgaris. The inhibition rate was -151%~92%, and the inhibition effect changed from inhibition to promotion when the content of Prunella vulgaris was 12 g/L. The content of MDA in cells of Microcystis aeruginosa was 2-3 times higher than that in control group, which aggravated lipid peroxidation of cell membranes and decreased the activity of algae cells. At the same time, the algae cell membrane structure and material exosmosis in the algae cell were affected by the extract of Agaricus vulgaris. At the same time, the algae cell membrane structure was destroyed by the extract, and the algae cell membrane permeability increased by 21 times. The extract had an effect on the growth of Microcystis aeruginosa. The results of this experiment provide basic data for controlling algae by immersing Pogostemon japonica in liquefaction, and for clarifying the effect of beach plants on algae blooms in Poyang Lake.