摘要
通过比较10种高等水生植物(粉绿狐尾藻、水葫芦、水浮莲、金边富贵竹、荇菜、海菜花、金鱼藻、穗状狐尾藻、黑藻、苦草)培养水对集胞藻的化感作用,发现不同受试水生植物对集胞藻生长的影响存在明显差异.海菜花培养水对受试藻种的生长略有促进作用,而其他水生植物培养水均表现出不同程度的抑藻效应.抑藻效应的强弱顺序依次为:粉绿狐尾藻>水葫芦>金鱼藻>水浮莲>荇菜>穗状狐尾藻>黑藻>金边富贵竹>苦草,其中粉绿狐尾藻的抑藻效率高达89.9%.这说明受试水生植物能够释放某些化感物质到水体环境中,干扰集胞藻的正常生长.进一步研究粉绿狐尾藻、水葫芦和金鱼藻对集胞藻藻细胞吸收光谱及其特征吸收峰的影响,发现它们释放的化感物质可破坏集胞藻的叶绿素a和藻胆蛋白(包括PC和APC)的特征吸收峰,降低藻细胞对光的吸收能力,说明高等水生植物释放某些的化感物质损害藻类的叶绿素a和藻胆蛋白可能是其抑制或杀死浮游藻类的重要途径之一.
Allelopathy of culture water from ten kinds of macrophytes on Synahocystis sp. was investigated. The results showed that there was slightly stimulation effect for Ottelia acuminate culture water on Synahocystis sp., while significant inhibition effects of other nine macrophytes on the algae were performed, and their inhibition capability was as following： M. aquaticum 〉 E. crassipes 〉 C. demersum 〉 P. stratiotes 〉 N.peltatum 〉 M.spicatum 〉 H. verticillata 〉 D.sanderiana 〉 V.spiralis, the inhibition ratio of M. aquaticumon Synahocystis sp. is up to 89.9%. By analyzing the absorption spectral curve and the characteristic peaks of Synahocystis sp. cell, it was found that M.aquaticum, Eichhornia crassipes and C. demersum could secrete some allelochemicals, which destroyed the chlorophyll a and phycobiliprotein absorption peak, and disturbing the course of light - harvesting of Synahocystis sp.. It probably indicated that allelopathic compounds released by macrophytes restrain the photosynthetic system of algae, which was one of importance ways for macrophytes inhibiting or even killing algae.
出处
《云南大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第5期535-540,共6页
Journal of Yunnan University(Natural Sciences Edition)
基金
云南省应用基础研究计划项目资助(2007C150M)
云南省教育厅基础研究基金项目资助(07J50556)
关键词
高等水生植物
化感作用
集胞藻
藻胆蛋白
叶绿素A
aquatic macrophy tes
allelopat hy
Synahocyst is sp.
phycobiliprotein
chlorophyll a
