The role of the cell wall compartment in mutualistic symbioses of plants

Frontiers in Plant Science

Mélanie K. Rich¹  Martine eSchorderet¹  Didier eReinhardt¹ 

[1] University of Fribourg;

关键词: Cell Wall;    Petunia;    Rhizobium;    Symbiosis;    plant;    nodulation;   

DOI  :  10.3389/fpls.2014.00238

来源: DOAJ

【 摘 要 】

Plants engage in mutualistic interactions with microbes that improve their mineral nutrient supply. The most wide-spread symbiotic association is arbuscular mycorrhiza (AM), in which fungi of the order Glomeromycota invade roots and colonize the cellular lumen of cortical cells.The establishment of this interaction requires a dedicated molecular-genetic program and a cellular machinery of the plant host. This program is partially shared with the root nodule symbiosis (RNS), which involves prokaryotic partners collectively referred to as rhizobia. Both, AM and RNS are endosymbioses that involve intracellular accommodation of the microbial partner in the cells of the plant host. Since plant cells are surrounded by sturdy cell walls, root penetration and cell invasion requires mechanisms to overcome this barrier while maintaining the cytoplasm of the two partners separate during development of the symbiotic association. Here, we discuss the diverse functions of the cell wall compartment in establishment and functioning of plant symbioses with the emphasis on AM and RNS, and we describe the stages of the AM association between the model organisms Petunia hybrida and Rhizophagus irregularis.

【 授权许可】

Unknown