Ludwig-Müller Jutta
Institut für Botanik; Technische Universität Dresden; Dresden, Germany.
Plant Signal Behav. 2014;9(4):e28593. doi: 10.4161/psb.28593. Epub 2014 Apr 3.
The obligate biotrophic protist Plasmodiophora brassicae causes worldwide devastating losses on Brassica crops. Among these are oilseed rape, vegetable brassicas, and turnips. However, the fact that Arabidopsis thaliana is a good host for P. brassicae, has boosted research on the molecular interaction using the resources available for this model plant. Due to the uncontrolled growth of infected host root tissues the disease has been coined "clubroot." Consequently, during the last years, alterations in host hormone metabolisms have been described. Influencing the hormonal balance leads to aberrant growth responses in the clubbed roots. The discussion presented in the following will focus on growth promoting hormones, mainly auxins, with the interaction to other growth associated hormonal signaling pathways, such as cytokinins and brassinosteroids.
专性活体营养型原生生物芸苔根肿菌在全球范围内给十字花科作物造成毁灭性损失。其中包括油菜、蔬菜型十字花科植物和芜菁。然而，拟南芥是芸苔根肿菌的良好宿主这一事实，推动了利用该模式植物现有资源对分子相互作用的研究。由于受感染宿主根组织的生长不受控制，这种病害被称为“根肿病”。因此，在过去几年中，已有关于宿主激素代谢变化的描述。影响激素平衡会导致根肿根中出现异常生长反应。以下讨论将聚焦于促进生长的激素，主要是生长素，以及它与其他与生长相关的激素信号通路（如细胞分裂素和油菜素类固醇）的相互作用。
