Abstract: Mycorrhiza is the most universal and important symbiosis on earth. The most prevalent type is the arbuscular mycorrhiza(AM). It can strengthen soil water use of plants, improve the absorption of P, Cr and other mineral elements in roots, and then accelerate the growth of plants. In this paper, effects of arbuscular mycorrhizal fungi(AMF) on plant growth were summarized. The effects of AM on water and mineral nutrition in plants have been studied deeply, especially phosphor. Seldom researches were related to plant photosynthetic characteristic. These researches can provide basic materials for the studies of the relationship between mycorrhizal fungi and plants.

Key words: arbuscular mycorrhizal fungi(AMF), plant growth, symbiosis