| 李国平,郑磊,柳凤.芒果细菌性角斑病菌对芒果酚类代谢的影响[J].中国南方果树,2021,50(1): |
| 芒果细菌性角斑病菌对芒果酚类代谢的影响 |
| Effects of Xanthomonas citri pv. mangiferaeindicae on Phenolic Metabolism in Mango |
| 投稿时间：2020-04-24 修订日期：2020-05-13 |
| DOI：10.13938/j.issn.1007-1431.20200272 |
| 中文关键词: 芒果 细菌性角斑病菌 酚类代谢 |
| 英文关键词:mango Xanthomonas citri pv. mangiferaeindicae phenolic metabolism |
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| 中文摘要: |
| 【目的】由柑橘黄单胞菌芒果致病变种引起的芒果细菌性角斑病是芒果生产上的重要病害,为探讨芒果感染细菌性角斑病过程中芒果叶片内酚类代谢的变化规律,【方法】以细菌性角斑病高抗品种红杧6号和高感品种贵妃杧为试验材料,测定了接种病菌(Xanthomonas citri pv. mangiferaeindicae,XCM)后芒果叶片内总酚、类黄酮、阿魏酸、木质素含量及酚类代谢相关酶(PPO和PAL)活性的变化趋势。【结果】接种病菌后,感(贵妃杧)、抗(红杧6号)芒果品种体内酚类物质均发生明显的变化。总酚、类黄酮、阿魏酸、木质素含量、PAL和PPO活性在接种病菌后均直线上升,但总酚、类黄酮、阿魏酸、木质素含量增幅抗病品种较高,且感病品种在侵染后期总酚和类黄酮均迅速降低；而PAL、PPO活性感病品种增幅较高。【结论】相关性分析表明芒果叶片的总酚、类黄酮、阿魏酸、木质素含量与芒果抗性呈正相关,而PAL、PPO活性与抗病性呈负相关。 |
| 英文摘要: |
| 【Aim】Bacterial leaf spot, caused by Xanthomonas citri pv. mangiferaeindicae, has been reported as an most important bacterial diseases in mango. In order to explore the changes of phenols metabolism in mango during the infection of the pathogen, 【Methods】the content of total phenols, flavonoids, ferulic acid, lignin and the activity of polyphenol metabolizing enzymes (PPO and PAL) was determined by using the high resistant cultivar Mangifera indica L. "Zill" and high sensitive cultivar M.indica L "Guifei". 【Results】 After inoculated with the pathogen, the phenols in the "Zill" and "Guifei" changed significantly. The content of total phenol, flavonoid, ferulic acid, lignin, and the activity of PAL and PPO increased in a straight line after inoculation, but the content of total phenol, flavonoid, ferulic acid and lignin increased higher in "Zill", and the total phenol and flavonoid decreased rapidly in "Guifei" at the later stage of infection. While the activity of PAL and PPO increased higher in "Guifei". 【Conclusion】Correlation analysis showed that the contents of total phenol, flavonoids, ferulic acid and lignin in mango were positively correlated with the resistance, while the activities of PAL and PPO were negatively correlated with the resistance. |
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