Seed germination characteristics of parasitic plant and its host recognition mechanisms
寄生植物广泛分布于不同的生态环境中，并具有不同的生育习性及与寄主识别特性.本文阐述了根寄生植物列当属和独脚金属种子萌发的特异性，以及目前已发现的寄生植物种子萌发的信号物质，并就不同萌发信号物质、植物激素、真菌代谢物在寄生植物种子识别寄主中的作用以及寄生植物种子预培养阶段的呼吸作用特性与萌发信号物质的活化机理等做了综述.探讨了各种列当不同分化类型的愈伤组织诱导、离体无菌侵染新系统及其在寄生植物与寄主互作识别研究中的应用，提出了寄生植物与寄主识别机理研究中存在的问题并对研究前景进行了展望.
Parasitic plants are widely distributed in various ecological environments,with different growth habits and host recognition mechanisms.This paper discussed the distinctive seed germination characteristics of root parasitic plants such as Orobanche and Striga,summarized the signals for parasitic seed germination discovered up to now,and reviewed the effects of various germination signals,plant hormones and several fungal metabolites on the host recognition of parasitic plants,as well as the respiration characteristics during the conditioning,and the activating mechanism of the signals for parasitic seed germination.The induction of various differentiated calli in different Orobanche species,and the establishment of novel in vitro aseptic infection system and its application in the host recognition of parasitic plants were also discussed,with the present problems in researching the recognition mechanisms between parasitic plants and hosts put forward,and the further work prospected.
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