孔石莼与2种海洋微藻的胞外滤液交叉培养研究  

The exploration of cross test between Ulva pertusa Kjellm.filtrates and the two species of micro-algae filtrates

作　　者：张培玉[1] 蔡恒江[2] 肖慧[2] 于娟[2] 冯蕾[2] 唐学玺[2] 

机构地区：[1]青岛大学环境科学与工程系,山东青岛266071 [2]中国海洋大学海洋生态学研究室,山东青岛266003

出　　处：《海洋科学》2006年第5期1-4,共4页Marine Sciences

基　　金：国家自然科学基金资助项目(30270258);山东省优秀中青年科学家科研奖励基金资助项目(03BS120)

摘　　要：在实验室条件下,采用海洋大型海藻石莼(Ulva pertusaKjellm.)和海洋微藻青岛大扁藻(Platymonas helgolandicaKylin var.tsingtaoensis)、亚历山大藻(Alexandrium tamarense(Lebour)Balech)的滤液做了交叉培养研究,初步探索藻间的克生机制。试验结果表明,不同温度处理下,2种微藻滤液对石莼生长的影响均有显著的差异。不同温度处理的石莼滤液对青岛大扁藻生长的影响差异显著,而对亚历山大藻生长的影响差异不显著。可以推测:石莼对亚历山大藻的抑制作用很可能是通过细胞的直接接触来完成的;而石莼对青岛大扁藻的抑制作用和两种微藻对石莼的抑制作用主要是通过分泌胞外产物(Extracellular products,ECP)来实现的,至于其它的方式和途径有待于进一步研究。The filtrates of Ulva pertusa Kjellm. , Platymonas helgolandica Kylin var. tslngtaoensis and Alexandrium tamarense （Lebour） Balech were researched using cross test under lab conditions and the preliminary studies on mechanism of competitive growth of interspeeis between marine macro-algae and micro-algae. The results demonstrated that the filtrates of the two species of micro algae dealt with different temperatures have notable effects on the growth of U. pertusa Kjellm. , and the filtrates of U. pertusa Kjellm dealt with different temperatures showed significant effects on the growth of P. helgolandica Kylin var. tsingtaoensis, but showed unnoticed effects on the growth of A. tamarense （I,ebour） Balech. Therefore, that U. pertusa Kjellm. inhibits P. helgolandica Kglln var. tsingtaoensis from growing was finished by cell＇s contaction, while that U. pertusa Kjellm. inhibits P. helgolandica Kylin var tsingtaoensis from growing and that the two species of micro-algae inhibit U. pertusa Kjellm. from growing were realized by ECP. and the other ways and functions of interaction between macro-algae and micro-algae need being studied further.

关 键 词：石莼(Ulva pertusa Kjellm.) 青岛大扁藻(Platymonas helgolandica KYLIN var.tsingtaoensis) 亚历山大藻(Alexandrium tamarense(Lebour)Balech) 胞外产物 竞争 

分 类 号：S968.4[农业科学—水产养殖]