丛枝菌根真菌(AMF)提高植物抗旱性的研究进展

丛枝菌根是分布最广泛的一类内生菌根，它可以促进植物对水分的吸收和利用，提高植物的抗旱能力。丛枝菌根真菌可以通过以下几个方面增强植物抗旱性：通过菌丝增加植物对土壤水分的吸收；改善植物的磷营养及其他矿质元素营养；能显著提高蒸腾速率和气孔导度；干旱条件下降低植株叶片水势、永久凋萎点、叶片饱和亏、气孔阻力和恢复时间；改变激素平衡。

Advances in Increasing Plant Drought Resistance by AM Fungi

Arbuscular Mycorrhiza is one of the most broad mycorrhizal, it can enhance plants’ ability of absorbing. Arbuscular Mycorrhiza can improve the ability of resisting drought from several aspects: hyphal enhances plants’ chances of absorbing water from soil；it can improve plants’ phosphorus and another minerals’ nutrition, increase the content of chlorophyll; observably enhance transpiration and stoma conduction; reduce the flow of water, permanent languish point, stoma resistance; change the balance of hormone, promote accumulation plant proline and capability of nitric reductive enzyme.