Studies on the establishment and element supply ability of arbusculer mycorrhizal symbiosis using the hyper-mycorrhizal soybean mutant

以大豆高菌根突变体为材料，研究了丛枝菌根共生关系的建立和元素供应能力。所得结果总结如下：1。高菌根大豆突变体En6500的丛枝丰度高于野生型Enrei。结果表明，大豆茎部对丛枝形成起负调控作用。我们发现大豆根源物质不参与丛枝菌根真菌外菌丝的生长。超结瘤大豆基因型Sakukei 4和En6500的丛枝丰度高于野生型enre4。我们在丛枝菌根真菌的外菌丝中发现了参与磷酸盐运输的聚磷聚积细胞器。我们阐明了一些微量元素的吸收与根的丛枝形成程度有关。

We studied the establishment and element supply ability of arbusculer mycorrhizal symbiosis using the hyper-mycorrhizal soybean mutant. The results obtained were summarized as follows :1. Hyper-mycorrhizal soybean mutant, En6500, showed higher arbuscular abundance compared with the wild type Enrei. We elucidated that soybean shoot is responsible for the negative regulation of arbuscule formation.2. We found that the root-derived material of soybean root is not involved in the growth of external hyphae of arbuscular mycorrhizal fungi.3. Hyper-nodulating soybean genotype Sakukei 4, as well as En6500, showed higher arbuscular abundance compared with the wild type Enrei.4. We found the poly-phosphate accumulating organella involved in the transport of phosphate in the external hyphae of arbuscular mycorrhizal fungi.5. We clarified that the uptake of some microelements are related to the degree of arbuscule formation in the root.