Genre Andrea, Bonfante Paola
Dipartimento di Biologia Vegetale, Università di Torino, Italy.
Mol Plant Microbe Interact. 2007 Sep;20(9):1023-30. doi: 10.1094/MPMI-20-9-1023.
Significant advances in the cell biology of plant-microbe interactions have been achieved recently, to a large extent based on new technical approaches such as the use of fluorescent protein tags in model plants exploited in conjunction with available genetic resources. They have highlighted the pivotal role played by epidermal cells as the first site at which direct cell-to-cell contact takes place between the plant and microbes it may host. Here, we compare the cellular aspects of early biotrophic interactions with symbiotic and pathogenic microbes and evaluate the hypothesis that their hosting by plant cells share common traits related to the necessity of preserving host-cell integrity. The cellular events that accompany cell entry by the different biotrophs are divided into three categories, depending on whether the cellular changes are triggered by diffusible molecules, direct contact, or cell lumen penetration. Similarities and differences mirror the nutritional and developmental strategies of each plant-interacting organism, underlining the fact that plant cell entry represents a key aspect in the establishment of biotrophy.
近年来，植物与微生物相互作用的细胞生物学取得了重大进展，这在很大程度上基于新的技术方法，例如在模式植物中使用荧光蛋白标签，并结合现有的遗传资源。这些进展突出了表皮细胞所起的关键作用，表皮细胞是植物与其可能宿主的微生物之间发生直接细胞间接触的首个位点。在这里，我们比较了早期生物营养型相互作用与共生和致病微生物在细胞层面的情况，并评估了以下假设：植物细胞对它们的容纳具有与维持宿主细胞完整性的必要性相关的共同特征。不同生物营养型微生物进入细胞时伴随的细胞事件分为三类，这取决于细胞变化是由可扩散分子、直接接触还是细胞腔穿透引发的。异同之处反映了每种与植物相互作用的生物体的营养和发育策略，突显了植物细胞进入是生物营养型建立过程中的一个关键方面这一事实。
