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微生物学通报

尖孢镰刀菌致病机理和化感作用研究进展
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国家自然科学基金项目(No. 31160100);内蒙古自治区应用技术与开发项目(No. 20110711)


Research advances on the mechanism of pathogenesis and allelopathy of Fusarium oxysporium
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    摘要:

    尖孢镰刀菌引起的枯萎病在生产中的防控相当困难。通过总结国内外相关文献,综述近年来有关尖孢镰刀菌致病机理和化感作用的研究进展。尖孢镰刀菌通过分泌毒素和细胞壁降解酶共同致病,谱系特异性区域的存在是其致病性强和宿主范围广的主要原因;在尖孢镰刀菌各专化型中已分离出大量致病相关基因;其他植物和拮抗微生物(木霉菌、丛枝菌根真菌、非致病性尖孢镰刀菌以及植物生长促生菌)可以分泌化感物质,作用于宿主植物和尖孢镰刀菌,直接抑制尖孢镰刀菌的生长或激活宿主植物的防御反应。未来有关尖孢镰刀菌致病机理研究应该在基因组测序基础上构建精细的遗传图谱;对化感作用的研究应当深入探讨分子机理,利用高通量测序等技术在转录组或蛋白组水平上明确宿主植物抗枯萎病相关基因,同时利用分子标记辅助育种来筛选新的抗枯萎病品种。

    Abstract:

    Plant wilt is one of disease difficult control caused by Fusarium oxysporum in crop and vegetables production field. Here is a review about domestic and overseas studies on pathogenesis by F. oxysporum and the application of allelopathic. Co-pathogenesis caused by F. oxysporum secretion of toxins and cell wall degrading enzymes in host plants. The lineage-specific region is the reason of F. oxyspoyum with strongly virulent and widely host. Different genes associated with its disease mechanisms have been isolated respectively in specialized F. oxysporum strains. However, some plants and microorganism (Trichoderma spp., arbuscular mycorrhizal fungi, non-pathogenic F. oxysporum, and plant growth promoting rhizobacteria) release allelochemicals which directly inhibit the growth of F. oxysporum or active defense reaction of host plants. For the furthermore in future, genome sequencing will be essential for building accurate genetic maps of different pathotypes of F. oxysporum. And gene-gene relationships between F. oxysporum and the resistance host plant should be exploded. High-throughput technologies will be necessary at the level of transcriptome as well as at the proteome level. Screening new plant varieties for resistance blight will also be developed by molecular marker assisted breeding.

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高晓敏,王琚钢,马立国,云兴福. 尖孢镰刀菌致病机理和化感作用研究进展[J]. 微生物学通报, 2014, 41(10): 2143-2148

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  • 在线发布日期: 2014-10-10
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