The role of phytohormones in the regulation of mycorrhization
Abstract
Arbuscular mycorrhizal fungi (AMF) are symbiotic soil fungi which colonize roots of about 80% of vascular plants. Mycorrhizal formation enhances the growth and survival of numerous plant species Phytohormones are a group of naturally occuring substances which, at low concentrations, play a crucial role in the development of plants. In addition, some plant hormones seem to play an important role in pathogenic and symbiotic plant-microbe (e.g. Rhizobium-legume) interactions. Long distance signals such as auxins, cytokinins and ethylene have been shown to present altered levels in mycorrhizal plants, however, there is still few informations on the role of phytohormones during plant-arbuscular mycorrhizal interaction. In the proposed project we want to use plant mutants/transgenic plants with altered levels of hormones to study the role of phytohormones i) during root colonization by AMF, ii) during autoregulation of mycorrhization.
keywords mycorrhiza glomales hormones regulation