Effects of Colletotrichum Gloeosporioides on Physiological and Biochemical of Walnut Leaves

doi:10.14088/j.cnki.issn0439-8114.2018.22.020

Abstract

Abstract: Taking leaves of bubble walnut（Juglans sigillata Dode） in vitro as materials,the effects of physiological and biochemical of Colletotrichum gloeosporioides on walnut （Juglans regia L.） leaves were studied. The results showed that the activity of superoxide dismutase（SOD） and catalase（CAT） in walnut leaves after inoculated with Colletotrichum gloeosporioides decreased with the increase of the time of onset,peroxidase（POD） activity increased at first and then descend with the time increasing,protective enzyme activity of the third day and the fifth day after inoculated was significantly higher than that of the control group. Change of malonaldehyde（MDA）,soluble protein and soluble sugar content in walnut leaves after inoculation with Colletotrichum gloeosporioides showed a rising trend with the extension of the time of onset, among, the content of MDA was significantly higher than the control group in the third and the fifth days,soluble protein and soluble sugar content was not significant with control. The net photosynthetic rate of walnut leaf which infected with walnut anthracnose was significantly lower than healthy walnut leaf. Stomatal conductance, intercellular carbon dioxide concentration and transpiration rate of walnut leaf which infected with walnut anthracnose was were not significant with control. Thus, it can be seen that the effects of physiological and biochemical of Colletotrichum gloeosporioides on walnut leaves were significant.

Key words: Colletotrichum gloeosporioides, walnut（Juglans regia L.）, physiological and biochemical indicators

CLC Number:

XU Hui-juan, WANG Rui-rui, YANG Zhen-de, WU Guang, MENG Hai-qin, WANG Xiao-xue. Effects of Colletotrichum Gloeosporioides on Physiological and Biochemical of Walnut Leaves[J]. HUBEI AGRICULTURAL SCIENCES, 2018, 57(22): 70-73.

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