Kaiser Bettina, Vogg Gerd, Fürst Ursula B, Albert Markus
Institute of Plant Biochemistry, Centre for Plant Molecular Biology, University of Tübingen Tübingen, Germany.
Department of Botany II - Ecophysiology and Vegetation Ecology, Julius-von-Sachs-Institut für Biowissenschaften, Botanischer Garten der Universität Würzburg, University of Würzburg Würzburg, Germany.
Front Plant Sci. 2015 Feb 4;6:45. doi: 10.3389/fpls.2015.00045. eCollection 2015.
By comparison with plant-microbe interaction, little is known about the interaction of parasitic plants with their hosts. Plants of the genus Cuscuta belong to the family of Cuscutaceae and comprise about 200 species, all of which live as stem holoparasites on other plants. Cuscuta spp. possess no roots nor fully expanded leaves and the vegetative portion appears to be a stem only. The parasite winds around plants and penetrates the host stems via haustoria, forming direct connections to the vascular bundles of their hosts to withdraw water, carbohydrates, and other solutes. Besides susceptible hosts, a few plants exist that exhibit an active resistance against infestation by Cuscuta spp. For example, cultivated tomato (Solanum lycopersicum) fends off Cuscuta reflexa by means of a hypersensitive-type response occurring in the early penetration phase. This report on the plant-plant dialog between Cuscuta spp. and its host plants focuses on the incompatible interaction of C. reflexa with tomato.
与植物 - 微生物相互作用相比，人们对寄生植物与其宿主之间的相互作用了解甚少。菟丝子属植物属于菟丝子科，约有200种，它们均以茎全寄生的方式寄生于其他植物上。菟丝子属植物没有根，也没有完全展开的叶子，其营养部分似乎仅为茎。这种寄生植物缠绕在植物上，并通过吸器穿透宿主茎干，与宿主的维管束形成直接连接，以获取水分、碳水化合物和其他溶质。除了易感宿主外，还有一些植物对菟丝子属植物的侵染表现出主动抗性。例如，栽培番茄（Solanum lycopersicum）通过在早期穿透阶段发生的过敏型反应抵御南方菟丝子（Cuscuta reflexa）。本报告关于菟丝子属植物与其宿主植物之间的植物 - 植物对话，重点关注南方菟丝子与番茄之间的不相容相互作用。
