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通过染色体整合抗生素2,4-二乙酰基间苯三酚合成基因提高荧光假单胞菌生防能力 被引量:14

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摘要 Pseudomonas fluorescens CPF-10和2P24分离自小麦全蚀病自然衰退土壤,两者都产生酚类抗生素2,4-二乙酰基间苯三酚(2,4-diacetylphloroglucinol,2,4-DAPG),对多种土传植物病害具有较好的防治能力.利用Tn5转座子携带2,4-DAPG合成基因簇分别整合到野生荧光假单胞菌P32(2,4-DAPG-),CPF-10和2P24的染色体上,HPLC结果表明2,4-DAPG阴性菌P32可以产生抗生素2,4-DAPG,2,4-DAPG阳性菌CPF-10和2P24的抗生素产量可显著提高.番茄青枯病菌、小麦全蚀病菌、棉花立枯病菌的平板抑菌实验和番茄青枯病、小麦全蚀病温室防病实验结果说明2,4-DAPG产量的提高对防治病害具有增效作用.工程菌与野生菌株在灭菌土中定殖能力没有显著差异,但在自然土中工程菌较野生菌的定殖能力显著提高.结果表明,提高抗生素2,4-DAPG的产量是提高荧光假单胞菌防治病害效果的有效途径之一.
出处 《科学通报》 EI CAS CSCD 北大核心 2005年第8期766-771,共6页 Chinese Science Bulletin
基金 国家自然科学基金(批准号:30100120,30370952) 国家高技术研究发展计划(批准号:2003AA241170) 内蒙古自然科学基金(批准号:200408020306)资助项目.
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参考文献25

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二级参考文献43

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