Role of cell wall degrading enzymes in the interaction of poplar and Melampsora larici-populina Kleb. |
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Authors: | Chengming Tian Peng Zhao Zhimin Cao |
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Institution: | (1) The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing, 100083, China;(2) College of Forestry, Northwest A & F University, Yangling, 712100, China |
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Abstract: | The activity of cell wall-degrading enzymes, produced in poplar cultivars infected Melampsora laricipopulina Kleb., was studied. The results show that PMG, PMTE, CX and β-glucosidase played roles during the infection. After inoculation, the activity of PMG in both susceptible and resistant
cultivars had two peak values in 2 dpi and 5 dpi. The activities of PMTE and β-glucosidase had a peak value in 3 dpi, and
CX in 2 dpi. Among these cell wall-degrading enzymes, the activities of PMG and PMTE were higher and the activities of CX and β-glucosidase were relatively lower. The activities of these cell wall-degrading enzymes were significantly higher in
susceptible cultivars than those in resistant cultivars. All these demonstrated that these cell wall-degrading enzymes played
certain roles in the infection of M. larici-populina.
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Translated from Scientia Silvae Sinicae, 2008, 44(5): 79–83 译自: 林业科学] |
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Keywords: | Melampsora larici-populina cell walldegrading enzymes poplar |
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