|
|
|
This article has been:browse 7627times Download 3654times |
Scan the code! |
|
兰科植物菌根真菌研究新见解 |
王美娜1,2,胡玥2,李鹤娟2,李健2,陈建兵2,兰思仁1*
|
1.福建农林大学艺术学院园林学院(合署),福州350002;2.深圳市兰科植物保护研究中心(全国兰科植物种质
资源保护中心)兰科植物保护与利用国家林业与草原局重点实验室,广东深圳518114
|
|
摘要: |
兰科(Orchidaceae)在地球生命系统演化中占有十分重要的地位,几乎全部兰科植物均处于不同程度的濒危状态,研究兰科菌根真菌对于保护珍稀濒危兰科植物具有重要意义。该文在对菌根真菌相关的概念及研究方法进行综述的基础上,对兰科菌根真菌的主要类群、特异性及其与兰科植物稀有性之间的关系,以及兰科菌根真菌与兰科植物之间的营养关系和进化关系进行了总结。兰科菌根真菌的研究方法可以归纳为经典研究方法、早期分子生物学方法、rDNA片段高通量测序法、宏基因组学方法。兰科菌根真菌类群主要隶属于担子菌门(Basidiomycota)、子囊菌门(Ascomycota)和毛霉门(Mucoromycota)。根据兰科菌根真菌特异性与否,首次明确了兰科菌根真菌定植关系可分为三大类:特异性定植、广泛性定植和特异-广泛兼性定植。根据营养关系特点,首次将兰科植物与菌根真菌之间的营养关系划分为三大类:兰花单向利好型、典型共生型、分工合作型。兰科菌根真菌特异性与兰科植物稀有性之间的关系呈现出两面性,而兰科菌根真菌与兰科植物之间是否存在协同进化关系还需要更多的研究才能阐明。此外,该文还对兰科菌根真菌领域今后的研究提出了一些思路。 |
关键词: 兰科菌根真菌,宏基因组,特异性,营养关系,协同进化 |
DOI:10.11931/guihaia.gxzw201907013 |
分类号:Q933 |
文章编号:1000-3142(2021)04-0487-16 |
Fund project:深圳市科技计划项目(JCYJ20160531110513702)[SupportedbytheScienceandTechnologyPlanProgramofShenzhen(JCYJ20160531110513702)]。 |
|
New insights into orchid mycorrhizal fungi research |
WANG Meina1, 2, HU Yue2, LI Hejuan2, LI Jian2, CHEN Jianbing2, LAN Siren1*
|
1. College of Arts, College of Landscape Architecture, Fujian Agricultural and Forestry University, Fuzhou 350002, China;2. Key Laboratory
of National Forestry and Grassland Administration for Orchid Conservation and Utilization, the National Orchid Conservation
Center of China and Orchid Conservation &3.Research Center of Shenzhen, Shenzhen 518114, Guangdong, China
|
Abstract: |
Orchidaceae occupies a very important position in the biological phylogeny and evolutionary system on the earth. Almost all Orchidaceae species are threatened or endangered to certain degrees. It is of great significance to study orchid mycorrhizal fungi(OMF)to protect rare and endangered orchids. In this article, OMF and its related terms were introduced. The methods used for the OMF research were summarized. The main taxa and specificity of OMF, the relationship between OMF specificity and orchids rarity, the nutritional relationship and co-evolutionary relationship between OMF and orchids were reviewed. The OMF research methods mainly include: classical methods, early molecular biological methods, rDNA fragment high-throughput sequencing methods and metagenomic methods. The taxa of OMF mainly belong three fungal phyla: Basidiomycota, Ascomycota and Mucoromycota. According to the degree of OMF specificity, it is the first time that we put forward that the OMF colonization can be divided into three types: specific colonization, extensive colonization and specific extensive facultative colonization. According to the characteristics of the nutritional relationship, we first put forward that the nutritional relationship between orchids and OMF can be divided into three types: orchids unidirectional benefit type, typical symbiotic type and cooperation type. The correlation between OMF specificity and orchids rarity showed two sides. And more researches are still needed to clarify whether there is co-evolutionary relationship between orchids and OMF. Finally, some ideas based on the current researches were proposed for future OMF research. |
Key words: Orchid mycorrhizal fungi, metagenomic, specificity, nutritional relationship, co-evolution |
|
|
|
|
|