菌物学报2025，Vol.44Issue(6)：42-54,13.DOI:10.13346/j.mycosystema.240349
江西乐安古樟林香樟根系及根际土壤AM真菌
AM fungi in the roots and rhizosphere soil of Cinnamomum camphora in ancient camphor forest of Le'an,Jiangxi Province
摘要
Abstract
The ancient camphor forest in Niutian Town,Le'an County,Jiangxi Province,is well known as'the first ancient camphor forest in China',having more than 3 000 ancient camphor trees dating from 100 to 1 200 years,and it is listed as a national ecological public welfare forest for protection.To explore the mycorrhizal types and the species diversity of arbuscular mycorrhizal(AM)fungi in the ancient camphor trees with different tree ages,root tissue staining,AM fungal spore separation,and microscopic morphological observation were carried out.The results show that the main type of camphor tree mycorrhiza was AM with characteristic arbuscular and vesicle structures,intermixed with a small amount of DSE(dark septate endophytic)symbiotic fungi with dark septate mycelia and microsclerotia in root cells.Totally 15 species belonging to 8 genera of 5 families of AM fungi were identified from the rhizosphere soil samples of ancient camphor trees covering 100,200,400,600,800 and 1 200 years.Among them,Glomus flavisporum and G.melanosporum were the most widely distributed species.The colonizing rate of AM fungi in roots and the amount of AM fungal spores in the rhizosphere soil showed a decreasing trend with the increase of tree age.The probability is that these AM fungi have long been symbiotically associated with the 1 000-year-old camphor trees,and they play an important ecological function in maintaining the healthy growth of the ancient camphor forest.关键词
香樟/丛枝菌根真菌/根际土壤/菌根结构类型Key words
Cinnamomum camphora/arbuscular mycorrhizal fungi(AMF)/rhizosphere soil/mycorrhizal structure type引用本文复制引用
苏丹,张春明,许榕凡,姚吉祥,张妍,李琳琳,吕国忠,杨红..江西乐安古樟林香樟根系及根际土壤AM真菌[J].菌物学报,2025,44(6):42-54,13.基金项目
中央高校自主基金项目 This work was supported by the Independent Fund Project of the Central Universities. （）
