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Infection process of Corynespora cassiicola tagged with GFP on Hevea brasiliensis

文献类型: 外文期刊

作者: Liu, X. -M. 1 ; Qi, Y. -X. 2 ; Zhang, X. 2 ; Xie, Y. -X. 2 ; Zhang, H. 2 ; Wei, Y. -X. 1 ; Cao, S. -W. 1 ; Pu, J. -J. 3 ;

作者机构: 1.Hainan Univ, Coll Environm & Plant Protect, Key Lab Protect & Dev Utilizat Trop Crop Germplas, Minist Educ, Haikou 570228, Peoples R China

2.Chinese Acad Trop Agr Sci, Key Lab Integrated Pest Management Trop Crops, Minist Agr, Environm & Plant Protect Inst, Haikou 571101, Peoples R China

3.Chinese

关键词: Corynespora cassiicola;GFP transformation;Infection;Hevea brasiliensis

期刊名称:AUSTRALASIAN PLANT PATHOLOGY ( 影响因子:1.599; 五年影响因子:1.708 )

ISSN:

年卷期:

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收录情况: SCI

摘要: Corynespora leaf fall (CLF) disease, caused by the fungal pathogen Corynespora cassiicola, is a major disease of rubber tree (Hevea brasiliensis) that affects the production of natural rubber. To study its pathogenesis, we developed a C. cassiicola transformant tagged with green fluorescent protein and studied it using fluorescence and confocal laser scanning microscopy. The transformed isolate retained its pathogenicity and grew similarly to the wild-type. Conidia germinated and produced germ tubes 4 h after inoculation, after which the fungus infected leaves through wounds; extended into veins, cells, and intercellular spaces within 24 h; produced abundant mycelia on the surfaces of diseased leaves within 48 h; and began to form conidiophores and conidia within 72 h. The infection process of C. cassiicola on H. brasiliensis was complete within 72 h. Our findings may be useful for predicting the path of CLF disease and evaluating H. brasiliensis resistance to C. cassiicola via leaf colonization studies.

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