Molecular mechanism of the mycorrhizal uptake pathway of phosphate specific to the species of arbuscular mycorrhizal fungi. Brachypodium distachyon

Land plants in symbiosis with arbuscular mycorrhizal fungi must have a mechanism to regulate the phosphate acquisition pathway through mycorrhizal symbiosis as well as directly roots. Since there is extreme species and genetic diversity in arbuscular mycorrhizal fungi, plants that can establish absolute symbiosis may have the species-specific regulation of the phosphate acquisition mechanism via mycorrhizal symbiosis, i.e., the mycorrhizal uptake pathway of phosphate. This study aims to get molecular biological insights regarding the actual control mechanism of the phosphate acquisition pathway through mycorrhizal symbiosis in a species-specific manner based on the experiments using model plants, Brachypodium distachyon infected with different arbuscular mycorrhizal fungi species.

与丛枝菌根真菌（arbuscular mycorrhizal fungi, AMF）建立共生关系的陆生植物，必然具备一套调控机制，以管控经由菌根共生以及直接经由根系的磷酸盐获取途径。鉴于丛枝菌根真菌存在极高的物种与遗传多样性，能够与真菌建立稳定共生关系的植物，可能演化出针对菌根共生磷酸盐获取机制的物种特异性调控方式，即磷酸盐的菌根吸收途径。本研究以接种了不同丛枝菌根真菌物种的模式植物二穗短柄草（Brachypodium distachyon）为实验材料，旨在从分子生物学层面解析以物种特异性方式调控菌根共生磷酸盐获取途径的实际作用机制。