山东农业科学2023，Vol.55Issue(12)：79-88,10.DOI:10.14083/j.issn.1001-4942.2023.12.011
丛枝菌根真菌对盐胁迫下园林植物再力花生长发育和光合特性的影响
Effects of Arbuscular Mycorrhizal Fungi on Growth and Photosynthetic Characteristics of Ornamental Plant Thalia dealbata under Salt Stress
摘要
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.关键词
丛枝菌根真菌/再力花/盐胁迫/生长发育/光合特性Key words
Arbuscular mycorrhizal fungi/Thalia dealbata/Salt stress/Growth and development/Pho-tosynthetic characteristics分类
农业科技引用本文复制引用
刘振凡,崔广强,吴成华,刘文鑫..丛枝菌根真菌对盐胁迫下园林植物再力花生长发育和光合特性的影响[J].山东农业科学,2023,55(12):79-88,10.基金项目
福建省科技厅引导性项目(2021N0002) （2021N0002）
国家自然科学基金项目(31572088) （31572088）
国家林业局森林公园工程中心开放课题(PTJH1500210) （PTJH1500210）
