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OALib Journal期刊
ISSN: 2333-9721
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共培养条件下菖蒲和铜绿微囊藻之间的化感作用
DOI: 10.3724/SP.J.1145.2012.01017, PP. 1017-1021
Keywords: 菖蒲,铜绿微囊藻,共生培养,化感作用,超氧化物歧化酶,丙二醛
Abstract:
采用共生培养方法研究菖蒲（acoruscalamus）和铜绿微囊藻（microcystisaeruginosa）之间的化感作用.结果表明，初始密度为1.0×107indml-1的铜绿微囊藻与20gl-1菖蒲共生培养时，菖蒲对铜绿微囊藻在一定程度上产生了化感抑制，但是铜绿微囊藻的生长作用占优势，d20抑制率仅为16%.而在培养过程中，菖蒲叶绿素a含量逐渐减少，d20叶绿素a含量仅为对照组的27%；超氧化物歧化酶（sod）活性在d12开始明显降低，d20仅为对照组的46%；丙二醛（mda）含量呈现逐渐增加趋势，d20为对照组的172%；而生物量仅为对照组的62%.研究表明高密度铜绿微囊藻可以诱导菖蒲产生氧化胁迫，引起细胞结构严重损伤，从而强烈抑制菖蒲的生长.图4参31
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