Study on Physiological Factors in Strawberry ‘Jingyao’ Inoculated with Anthracnose

doi:10.11924/j.issn.1000-6850.2013-2686

Abstract

Abstract: In order to research the influence of Anthracnose infection on the physiological factors related to resistance in a strawberry cultivar‘Jingyao’, the changes of 12 physiological factors involved in disease resistance were detected at different times after inoculated by Colletotrichum gloeosporioides. The results showed that the activity of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), phenylalanin ammonialyase (PAL), polyphenol oxidase (PPO) and the content of malondialdehyde (MDA), total soluble proteins, vitamin C, total phenols, lignin, chlorogenic acid (CHA), ferulic acid (FA) were showed increased first and then decreased in the 96 hours range. The time of the highest content of MDA was earlier than that of PAL, total soluble proteins, total phenols, FA, and later than that of SOD, POD, CAT, vitamin C, lignin, CHA. The increased folds of MDA content were less than that of CAT, PAL, total soluble proteins and more than that of other 8 physiological factors. The continuance time of high MDA content was longer than other physiological factors. These results suggested that the increasing extent and continuance time of other physiological factors involved in disease resistance were less than that of MDA, which might be correlation to the anthracnose-susceptible character of‘JiangYao’. Our results laid a foundation for further research the pathogenesis of C. gloeosporioides in ‘JiangYao’ and provided a reference for research on induce resistance of‘Jingyao’to anthracnose.

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