1. The best studied inducible and repressible enzyme in phytopathogenic prokaryotes is endo-pectate lyase in E. carotovora.
   植物病原原核生物中研究得最清楚的是胡萝卜软腐菌的果胶酸内裂解酶。
2. Polygalacturonase has the same substrate specificity as pectate lyase. This enzyme is produced by Erwinia carotovora subspp. but not by Erwinia chyrsanthemi.
   与果胶酸裂解酶的底物相同。胡萝卜软腐欧氏菌的多个亚种产生此酶，但菊欧氏菌不产生。
3. Moreover, the activities of isocitrate lyase and isocitrate dehydrogenase in the 0 P-treated cells were 1.48 and 0.75 times higher than in the control at day 8 of the treatment.
   在第8 d，缺磷条件下的细胞异柠檬酸裂解酶活性和异柠檬酸脱氢酶活性分别是对照的1.48倍和75%。

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