Effects of the potential allelochemical α-asarone on growth, physiology and ultrastructure of two unicellular green algae
Effects of the potential allelochemical α-asarone on growth, physiology and ultrastructure of two unicellular green algae
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DOI：
10.1007/bf02182732
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发表时间：
1993-08
影响因子：
3.3
通讯作者：
A. Pollio;G. Pinto;R. Ligrone;G. Aliotta
中科院分区：
文献类型：
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作者：
A. Pollio;G. Pinto;R. Ligrone;G. Aliotta
研究了天然苯丙醇类化合物α-细辛醚对两种微藻的生长方式、光合作用、呼吸作用和细胞结构的影响。在布氏钉螺的培养中，α-细辛醚在培养基中减少，并导致生长滞后。这两种现象都取决于接种的细胞数量。而在羊角卷柏的培养中，所有接种物的生长速率都持续下降，而α-细辛醚的含量仅有轻微的下降。在这两种藻类中，α-细辛醚最初导致光合作用的抑制，随后恢复了控制值。呼吸频率OFA。α-细辛脑对布洛尼无明显影响，而对INS有显著影响。在最初的48小时内，山羊的呼吸下降到对照的60%，随后上升到比对照高20%的值。在加入α-细辛脑后24和72h进行的超微结构观察显示，细胞壁INA发生改变。Braunii，每细胞切片中的菌丝体剖面数增加。在两种藻类的液泡中都有电子致密沉积物的积累。
The effects of the natural phenylpropanoid α-asarone on growth pattern, photosynthesis, respiration and cell structure of two microalgae have been investigated. In cultures ofAnkistrodesmus brauniiα-asarone decreases in the medium and induces a lag in growth. Both phenomena were dependent on the number of cells inoculated. By contrast, in cultures ofSelenastrum capricornutuma constant decrease of the growth rate at all inocula was observed and only a slight decrease of α-asarone in the medium occurred. In both algae α-asarone caused an initial inhibition of photosynthesis, followed by a resumption of control values. The respiratory rate ofA. brauniiwas not significantly affected by α-asarone, whereas inS. capricornutumrespiration lowered to 60% of the control in the first 48 h and subsequently rose to values exceeding the controls by 20%. Ultrastructural observations carried out 24 and 72 h after the addition of α-asarone showed modifications of cell wall inA. braunii, an increase in the number of mithocondrial profiles per cell section inS. capricornutum, and an accumulation of electron-dense deposits in the vacuoles of both algae.