Cu2+对鼠尾藻幼孢子体生长的影响 |
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作者姓名: | 梁洲瑞 王飞久 孙修涛 汪文俊 丁昌玲 李涛 |
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作者单位: | 上海海洋大学水产与生命学院,上海,201306;中国水产科学研究院黄海水产研究所,青岛,266071;中国水产科学院黄海水产研究所海洋产物资源与酶工程实验室,青岛 266071;中国水产科学院黄海水产研究所海洋产物资源与酶工程实验室,青岛 266071;中国水产科学院黄海水产研究所海洋产物资源与酶工程实验室,青岛 266071;中国水产科学院黄海水产研究所海洋产物资源与酶工程实验室,青岛 266071;中国水产科学院黄海水产研究所海洋产物资源与酶工程实验室,青岛 266071 |
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摘 要: | 以鼠尾藻Sargassumthunbergii幼孢子体为材料,研究了Cu2+对不同生长时期的鼠尾藻幼孢子体生长的影响。不同生长时期的鼠尾藻幼孢子体对微量Cu2+都是敏感的。对于早期的鼠尾藻幼孢子体,5μg/L以上浓度的Cu2+对其正常生长不利;当Cu2+浓度达到或超过250μg/L时,该时期幼孢子体基本停止生长。对于后期的鼠尾藻幼孢子体,10μg/L以上浓度的Cu2+对其正常生长不利;1μg/L浓度的Cu2+对其生长有促进作用;当Cu2+浓度达到或超过50μg/L时,该时期幼孢子体增长缓慢或基本停止生长。鼠尾藻幼孢子体的假根由于结构和功能特性,对Cu2+的敏感程度不大,Cu2+处理初期依然表现出快速增长。
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关 键 词: | 鼠尾藻 Cu2+ 孢子体 |
收稿时间: | 2010/8/3 0:00:00 |
修稿时间: | 2010/11/10 0:00:00 |
Effect of Cu2+ on growth of Sargassum thunbergii young sporophyte |
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Authors: | LIANG Zhou-rui WANG Fei-jiu SUN Xiu-tao WANG Wen-jun DING Chang-ling LI Tao |
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Abstract: | The effect of Cu2+ on the growth of argassum thunbergii argassum thunbergii different growth periods of Syoung sporophyte was investigated. Both early and late Sargassum thunbergii young sporophyte were very sensitive to Cu2+. For early Sargassum thunbergii young sporophyte, Above 5 ug/Lof Cu2+ concentration, growth of young sporophytes were seriously inhibited. when Cu2+ concentration reach or exceed 250ug/L, young sporophytes could hardly grow. For late Sargassum thunbergii, Above 10 ug/Lof Cu2+ concentration, growth of young sporophytes were seriously inhibited. 1ppb of Cu2+ concentration accelerated the growth. 50 ug/L and higher concentrations of Cu2+ made the young sporophytes grow slowly or cease to grow. Due to the special structure and function characteristics, rhizoid was not sensitive to Cu2+. At the beginning of Cu2+ treatment, rhizoid still presented fast growed. |
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