2009Zhongguo shengtai nongye xuebaoOpen access

Phenylaprapanoid metabolism of sweet potato against Pseudomonas so-lanacearum

Wei Wang, Miao-Hong RUAN, Yong-Xiang QIU, Wei-Ying WANG, Yuqin Ke, Tingguo Pan

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Abstract

薯瘟病是甘薯的重要病害, 严重影响甘薯的品质和产量。本试验在甘薯苗期, 通过剪叶法接菌研究甘薯抗感病品种苯丙烷类代谢的变化规律。结果表明: 甘薯抗感病品种接菌后PAL、POD活性均有所提高, 且提高速度与品种抗性呈正相关; 抗病品种接菌后木质素和绿原酸含量显著增加, 感病品种接菌后绿原酸、总酚和类黄酮含量波动较大, 木质素含量降低。相关性分析表明, 接菌后木质素和绿原酸的积累与甘薯品种抗病性密切相关。接菌后PAL、POD活性迅速提高并积累木质素和绿原酸等抗病物质是甘薯抗薯瘟病的苯丙烷类代谢基础, 在抗病品种鉴定方面有一定的参考价值。

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薯瘟病是甘薯的重要病害, 严重影响甘薯的品质和产量。本试验在甘薯苗期, 通过剪叶法接菌研究甘薯抗感病品种苯丙烷类代谢的变化规律。结果表明: 甘薯抗感病品种接菌后PAL、POD活性均有所提高, 且提高速度与品种抗性呈正相关; 抗病品种接菌后木质素和绿原酸含量显著增加, 感病品种接菌后绿原酸、总酚和类黄酮含量波动较大, 木质素含量降低。相关性分析表明, 接菌后木质素和绿原酸的积累与甘薯品种抗病性密切相关。接菌后PAL、POD活性迅速提高并积累木质素和绿原酸等抗病物质是甘薯抗薯瘟病的苯丙烷类代谢基础, 在抗病品种鉴定方面有一定的参考价值。

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Available abstract

薯瘟病是甘薯的重要病害, 严重影响甘薯的品质和产量。本试验在甘薯苗期, 通过剪叶法接菌研究甘薯抗感病品种苯丙烷类代谢的变化规律。结果表明: 甘薯抗感病品种接菌后PAL、POD活性均有所提高, 且提高速度与品种抗性呈正相关; 抗病品种接菌后木质素和绿原酸含量显著增加, 感病品种接菌后绿原酸、总酚和类黄酮含量波动较大, 木质素含量降低。相关性分析表明, 接菌后木质素和绿原酸的积累与甘薯品种抗病性密切相关。接菌后PAL、POD活性迅速提高并积累木质素和绿原酸等抗病物质是甘薯抗薯瘟病的苯丙烷类代谢基础, 在抗病品种鉴定方面有一定的参考价值。

Key concepts: Point of delivery, Horticulture, Biology

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