Exploring the Potential of Natural Products From Mangrove Rhizosphere Bacteria as Biopesticides Against Plant Diseases
Exploring the Potential of Natural Products From Mangrove Rhizosphere Bacteria as Biopesticides Against Plant Diseases
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探索红树林根际细菌天然产物作为抗植物病害生物农药的潜力
DOI：
10.1094/pdis-11-18-1958-re
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发表时间：
2019
期刊：
影响因子：
4.5
通讯作者：
Xu Ying
中科院分区：
文献类型：
--
作者：
Hao Lingyun;Wang Yu;Chen Xinqi;Zheng Xiaoli;Chen Si;Li Shuangfei;Zhang Yu;Xu Ying
随着人们对当前杀菌剂应用所带来的环境问题的日益关注，需要研究替代的、环境相容的生物农药用于植物病害管理。从香港米埔自然保护区的老鼠仓（Acanthus ilicifolius Linn.）用细菌发酵培养物的粗提物进行的体外测定确定了约26%的菌株产生抗多种农业上重要的植物病原体的抗微生物化合物。当以50 μg/ml的浓度施用时，选择的对炭疽菌和稻瘟菌生长具有抑制作用的粗提取物分别显著抑制梨果实和水稻植株中的炭疽病和稻瘟病的发展。此外，在14种具有良好抗菌活性的粗提物中，有10种在25 μg ml−1时对小球藻属的毒性与对照没有显著差异，而Amistar Top和代森锰锌在相同浓度下完全杀死了小球藻。这些数据说明了红树林根际细菌天然产物在未来农业应用中的潜力。
With increasing concerns of the environmental problems associated with current fungicide application, investigation of alternative, environmentally compatible biopesticides for plant disease management is needed. A total of 113 strains associated withAcanthus ilicifoliusLinn in the Maipo Reserve, Hong Kong, were isolated and identified. In vitro assay with crude extracts of bacterial fermentation cultures identified ∼26% of the isolates producing antimicrobial compounds against a variety of agriculturally important phytopathogens. Selected crude extracts with inhibition toColletotrichum fructicolaandMagnaporthe oryzaegrowth significantly suppressed anthracnose and rice blast development in pear fruits and rice plants, respectively, when applied at 50 μg ml−1. Furthermore, 10 of 14 selected crude extracts with good antimicrobial activities had no significant differences in toxicity to the genusChlorellacompared with the control when used at 25 μg ml−1, whereas Amistar Top and Mancozeb completely killed the alga under the same concentration. These data illustrate the potential of natural products from mangrove rhizosphere bacteria in future agricultural application.