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OALib Journal期刊
ISSN: 2333-9721
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影响重寄生真菌盾壳霉几丁质酶的活性因子
DOI: 10.3724/SP.J.1145.2009.00226, PP. 226-229
Keywords: 盾壳霉,核盘菌,重寄生,几丁质酶
Abstract:
盾壳霉是油菜菌核病菌(核盘菌)的一种重寄生菌，为了探索几丁质酶在盾壳霉寄生核盘菌过程中的作用，本文研究了影响盾壳霉几丁质酶活性的因子.结果表明，盾壳霉几丁质酶酶促反应的最适温度为50℃，最适ph8.0.当温度不高于50℃、ph在5.0~9.0范围内酶活性较稳定.一些金属离子，包括mg2+、fe2+、ca2+、ba2+和mn2+等，对盾壳霉几丁质酶活性有促进作用，而另外一些金属离子，包括zn2+和cu2+，却对盾壳霉几丁质酶活性发挥有抑制作用.一定浓度的草酸(1~4mmoll-1)和硼酸(25~75mmoll-1)可显著提高盾壳霉几丁质酶活性.本文还就上述结果的生物学意义和潜在利用价值进行了讨论.图6表1参19
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