Preface Introduction On acquired immunity system for countering pathogens in plants Dong Hansong Part 1.Principles of Induced Resistance against Diseases in Plants Molecular biology of plant-pathogen interactions Zhang Xuejun Plant-pathogen recognition Dong Hansong Molecular and cellular interactions of plant hosts with mycotoxins Dong Hansong and Lu Peixiu Electrophysiology of induced resistance of plants to diseases Li Huaifang Superoxide dismutases and plant disease resistance Li Shidong Ethylene-conditioned response sequences:its relation with plant defence against diseases Zhang Xiansheng Advances in studies on molecular biology of thaumatin Liu Changzheng The co-evolutionistic and genetic bases of induced resistance Dong Hansong and Liu Aixin Functional response elements involved in induced resistance of plants to diseases Xu Wenlian and Wang Jinsheng Hypersensitive reaction as related to induced diseases resistance in plants Xu Wenlian and Jiang Wuling Orderliness and timeliness in expression of disease resistance in plants Lu Shien,Wang Hui and Dong Hansong The elicitors:their function,working model and process,and molecular genetics in plant defence against diseases Dong Hansong,Pan Jun and Liu Aixin Induction of phytoalexins Qin Yenping and Peng Youliang Molecular biology for induction of pathogenesis-related proteins Dong Hansong,Wang Shaohua and Zheng Jifa Lignification and related structural factors for the plant defence Liu Aixin and Dong HansongHydroxyproline-rich glycoproteins as related to disease defence of plants Hydroxyproline-rich glycoproteins as related to disease defence of plants Dong Hansong,Liang Yuancun,Liu Aixin et al. Part 2.Practical Strategies for Applying Induced Resistance to Control Plant Diseases Induced resistance against diseases in plants:mechanisms and approaches for disease control Dong Hansong Cellular engineering for disease resistance in plants:elicitation and selection of resistant somaclones Lu Peixiu and Dong Hansong Difficulties and strategies in controlling infections diseases of tobaccos Dong Hansong and Wang Zhifa Potential and practical approaches for control of tobacco brown spot based on the host-pathogen interactions Dong Hansong,Lu Peixiu and Yang Hetong Genetic variation sources and breeding strategies for developing tobacco with disease resistance Dong Hansong,Zhang Chunling,Yang Hetong et al. Interesting genes used in genetic engineering for disease and insect resistance in tobacco Dong Hansong,Zhang Chunling and Chen Ruitai Part 3.Tobacco Brown Spot as the Study System Interactions between the host and pathogen in tobacco brown spot pathosystem Dong Hansong and Liu Aixin Study on methods for indentifying pathogenicity of tobacco brown spot pathogen Dong Hansong and Wang Zhifa Studies on a selective isolation method for fungal pathogens of tobacco Dong Hansong,Qu Jianjun and Wang Zhifa Effects of culture conditions on growth capability of Altrenaria alternata(Fr.)Keissler Wang Zhifa and Dong Hansong Effects of cultural conditions on sporulation of tobacco brown spot pathogen Dong Hansong,Bu Xiaodong,Yang Hetong et al. Effects of leaf amounts in tobacco leaf extract media on growth and sporulation of Alternaria alternata Dong Hansong,Wang Jiwei and Wang Zhifa Pathogenicity-biology relationships influenced by inoculum components in Alternaria alternata Wang Zhifa,Dong Hansong and Qu Jianjun Fast responses of tobacco to toxin produced by Alternaria alternata in relation with identificaton for resistance of tobacco cultivars to brown spot Dong Hansong,Qu Jianjun,Wang Zhifa et al Study on variation of biological properties of Alternaria alternata in cultural and inoculating process Dong Hansong,Qu Jianjun,Wang Xingli et al. Observations about pathogenicity variation of tobacco brown spot pathogen Dong Hansong,Qu Jianjun,Zong Shulin et al. Study on conditions for sporulation and invasion to host by tobacco brown spot pathogen Dong Hansong,Qu Jianjun,Lu Shien et al. Occurrence in tobacco cultivars and geographical distribution of Alternaria alternata in China Dong Hansong,Chu Mingguang,yang Hetong et al. Part 4.Induced Resistance of Tobacco to Brown Spot and Other Diseases Recent advances in studies on induced resistance of tobacco to brown spot Dong Hansong and Liu Aixin Pathogenicity differentiation of Alternaria alternata and induced resistance of tobacco to brown spot by the hypovirulence strains Dong Hansong and Wang Zhifa Inducers of tobacco resistance to brown spot:1.selecting Alternaria alternata hypovirulent strains as inducer based on their culture properties Dong Hansong,Liu Aixin,Gao Mingyou,et al. Inducers of tobacco resistance to brown spot:2.chemicals Dong Hansong,Liu Aixin,Yang Xianying,et al. Inducers of tobacco resistance to brown spot:3.nonpathogenic bacteria and their application in fields Dong Hansong,Liu Aixin,Zhang Chengxi,et al. Inducers of tobacco resistance to brown spot:4.virus-induced resistance and its transferability to the regenerated plants and their progenies via tissue culture Dong Hansong,Liu Aixin,Sun Yankun et al. Conditions of 3 inducers to elicit tobacco resistance to brown spot Dong Hansong,Yu Jianli,Bu Xiaodong et al. Improvement of conditions for increasing effects of the hypovirulent strain TBA16 of the pathogen(Alternaria alternata)to induce tobacco resistance to brown spot Dong Hansong and Yu Jianli Function divergence of host-pathogen interactions by virulent and hypovirulent strains of the pathogen in tobacco brown spot Liu Aixin,Dong Hansong and Hou Chengxiao Induction of mistakes in the contact recognition as related to the induced host resistance in tobacco brown spot Dong Hansong and Liu Aixin Cell wall components of nonpathogenic bacteria and hypovirulent Alternaria alternata are responsible for induction of tobacco resistance to brown spot Liu Aixin,Dong Hansong,Gao Mingyou et al. Elicitation of tobacco resistance to brown spot by three kinds of biotic elicitors Dong Hansong,Liu Aixin and Wang Shaohua Occurrence of pathogenesis-related proteins during elicitation of tobacco resistance to brown spot Dong Hansong,Wang Shao hua,Liu Aixin et al. Induction of tobacco resistance to brown spot via somaclone stress with AT-toxin:1.somatic induction for toxin resistance Lu Peixiu,Dong hansong,Wang Zhifa et al. Induction of tobacco resistance to brown spot via somaclone ress with AT-toxin:2.regeneration of disease-resistant plants Lu peixiu,Dong Hansong,Wang Zhifa et al. Induction of tobacco resistance to brown spot via somaclone stress with AT-toxin:3.directed selection for the disease resistance Dong Hansong,Lu Peixiu,Liu Aixin et al. Induction of tobacco resistance to brown spot via somacone stress with AT-toxin:4.resistance expression in the regenerated plants and their somaclone progenies Dong Hansong,Liu Aixin,Sun Yankun et al. Laboratory scale production of mycelia and spores of Alternaria alternata for research and practice purposes Liu Boxin,Liu Guangyu,Fan Hongci et al. Control of brown spot by induced resistance in tobacco:1.field application of PCF1,a preparation from conidia of Alternaria alternata strain TBA16 Dong Hansong,Sun Xiaoping,Bu Xiaodong et al. Control of brown spot by induced resistance in tobacco:2.preparation SRS2,its functions to control the disease and to improve qualitative and economic properties of the cured leaves Dong Hansong,Liu Aixin,Wang Yanting et al. Tobacco resistance to fungal,bacterial,and viral diseases induced by 5 factors Liu Aixin,Dong Hansong,Yao Ge et al. Resistance to 4 diseases in tobacco somaclones NC89-TT regenerated from AT-toxin stress tissue culture,and NC89-V1 from no stress tissue culture of virus-induced plants Dong Hansong,Liu Aixin,Zhang Liuyi et al. Loss estimates of tobacco leaf yield and output value due to mosaic,black shank,and black lowering diseases Liu Yanrong,Dong Hansong,Zong Shulin et al. Modeling method for estimating tobacco production losses caused by brown spot disease Dong Hansong and Liu Yanrong Topics for the future Questionary considerations and perspectives on plant-pathogen interaction and plant disease control Dong Hansong,Xu Wenlian