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山定子（ＭａｌｕｓｂａｃａｔａＢｏｒｋｈ．）在遭到南京毛刺线虫（ＴｒｉｃｈｏｄｏｒｕｓｎａｎｊｉｎｇｅｎｓｉｓＬｉｕ＆Ｃｈｅｎ）侵染以后，根尖组织中很多生理生化物质都发生了病态的变化。结果表明：处理和对照相比，游离脯氨酸（Ｐｒｏ）含量、还原糖（ＲＣ）含量、过氧化物酶（ＰＯＤ）活性、多酚氧化酶（ＰＰＯＤ）活性、苯丙氨酸解氨酶（ＰＡＬ）活性和细胞壁中羟脯氨酸（Ｈｙｐ）含量均有不同程度的增加，总糖含量降低；并且在侵染初期和侵染后期，各种物质的变化幅度不同，游离脯氨酸含量、还原糖含量、３种酶活性在侵染前期增加的幅度大，细胞壁中羟脯氨酸含量是侵染后期增加的幅度大，而总糖含量是侵染后期降低的幅度大。这些物质的变化趋势揭示了山定子感染南京毛刺线虫的病症生理。
Malus baccata Borkh. After being infected by Trichodorus nanjingensis Liu & Chen, many physiological and biochemical substances in the apical tissues have undergone pathological changes. The results showed that the contents of free proline (Pro), reducing sugar (RC), peroxidase (POD), polyphenol oxidase (PPOD), phenylalanine ammonia lyase (PAL) activity and the content of hydroxyproline (Hyp) in the cell wall all increased to some extent and the total sugar content decreased. In the early stage of infection and in the late stage of infection, the changes of various substances were different. The content of free proline , Reducing sugar content, three kinds of enzyme activity in the pre-infection increased amplitude of the cell wall hydroxyproline content is increased in the late stage of infection, while the total sugar content is reduced late in the infection rate. The trend of these substances revealed the pathophysiology of the mountain stator infected with Nanjing sting nematode.