杉木林下草珊瑚根系丛枝真菌群落的季节动态研究  

Seasonal dynamics of arbuscular mycorrhizal fungal community associated with Sarcandra glabra under Cunninghamia lanceolata plantation

作　　者：贾全全 夏诗琪 李婷 黄明辉 江军 胡小红[1,2] 龚斌 朱培林[1,2] JIA Quanquan;XIA Shiqi;LI Ting;HUANG Minghui;JIANG Jun;HU Xiaohong;GONG Bin;ZHU Peilin(Jiangxi Academy of Forestry,Nanchang 330032,China;Key Laboratory of Traditional Chinese Medicine Planting Technology and Quality Research of Nanchang City,Nanchang 330032,China;Quannan Tianlong Forestry Assets Management Co.,Ltd,Ganzhou 341899,China)

机构地区：[1]江西省林业科学院,南昌330032 [2]南昌市中药材种植技术与质量研究重点实验室,南昌330032 [3]全南县天龙林业资产经营管理有限责任公司,赣州341899

出　　处：《生态科学》2023年第6期205-211,共7页Ecological Science

基　　金：江西省林科院青年科技人才培养项目(2019522802);江西省林业局林业科技创新项目(创新专项[2023]08号);国家重点研发计划项目(2017YFC05055051)。

摘　　要：以杉木林下草珊瑚为研究对象,通过测定其根系中丛枝菌根真菌(AMF)侵染率、根际土壤菌丝密度、根内AMF群落多样性以及土壤理化性质,探讨草珊瑚根内AMF群落结构的季节动态,以及与土壤理化性质的关系。结果表明,在草珊瑚根系中共检测到440个AMF的分类单元,分属9科14属,其中球囊霉属为绝对优势属,且1月和9月相对丰度高达99%。AMF侵染率和菌丝密度在不同月份存在波动,侵染率也是在1月和9月有两个峰值,且9月根际土壤的菌丝密度最大。土壤全磷、全钾、有效磷、速效钾和含水量是影响草珊瑚根系AMF群落结构的主要因子,其中土壤全磷和含水量影响显著(P<0.05)。This study documented the seasonal variation of arbuscular mycorrhizal fungal(AMF)community associated with Sarcandra glabra planted under Cunninghamia lanceolata forest stand.By quantifying the mycorrhizal colonization rate,fungal hyphal density in rhizosphere soil,diversity of AMF,as well as the rhizosphere soil properties,we analyzed the potential effects of soil properties on AMF community structure’s seasonal dynamics.We identified 440 OTUs in the roots of S.glabra,including 14 genera and 9 families of AMF.Glomus was the dominant genus.The relative abundance of Glomus was highest in January and September,reaching up to 99%.Meanwhile,the mycorrhizal colonization was higher in January and September than in other months,and the hyphal density in the rhizosphere soil was the highest in September.Soil total phosphorus,total potassium,available phosphorus,available potassium,and soil water content were the main factors affecting the structure of AMF community in roots of S.glabra,with the effects of total phosphorus and water content being significant(P<0.05).

关 键 词：草珊瑚 丛枝真菌 季节动态 土壤性质 

分 类 号：S718.81[农业科学—林学]