Effects of Arbuscular Mycorrhizal Fungi on Growth and Photosynthetic Characteristics of Ornamental Plant Thalia dealbata under Salt Stress
Liu Zhenfan
Cui Guangqiang
Wu Chenghua
Liu Wenxin
Abstract：To improve the salt tolerance of aquatic plant in garden wetlands,the experiment was carried out with Thalia dealbata as material to study the effects of inoculation of arbuscular mycorrhizal fungi(AMF)on its plant growth and development,root activity,osmotic regulation substances,antioxidant enzyme activity and leaf photosynthetic characteristics under NaCl stress.The results showed that the salt damage index of T1 group(inoculating AMF under salt stress)was significantly lower compared with the N-CK group(non-inocu-lation of AMF under salt stress),while the root activity,plant height,stem diameter,aboveground and under-ground dry matter amount were significantly higher than those of the N-CK group.Compared with N-CK group,the inoculation of AMF significantly increased the content of soluble protein,reduced the content of soluble sugar and proline,and also significantly reduced the content of malondialdehyde,significantly increased the activities of antioxidant enzymes(SOD,CAT,POD).As the time increase of salt stress,the net photosynthet-ic rate(Pn),stomatal conductance(Gs),transpiration rate(Tr)and intercellular CO2 concentration(Ci)of the leaves treated with AMF showed upward trends,while those of N-CK group showed downward trends.Therefore,inoculation of AMF could effectively alleviate the osmotic stress and oxidative damage of NaCl to Thalia dealbata,enhance its resistance to salt stress,so as to promote the plant growth and increase the photo-synthetic efficiency.
Keywords：Arbuscular mycorrhizal fungiThalia dealbataSalt stressGrowth and developmentPho-tosynthetic characteristics
Publication Date：2023-12-28
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：10( 79-88 )