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Further evidence of Ceratobasidium D.P. Rogers (Basidiomycota) serving as the ubiquitous fungal associate of Platanthera leucophaea (Orchidaceae) in the North American tallgrass prairie.
Botanical Studies ( IF 3.4 ) Pub Date : 2020-04-15 , DOI: 10.1186/s40529-020-00289-z
Hana L Thixton 1, 2, 3 , Elizabeth J Esselman 1 , Laura L Corey 2 , Lawrence W Zettler 2
Affiliation  

BACKGROUND In the United States and Canada, ca. one-half of native orchid species are now threatened with extinction. A number of these species are restricted to tallgrass prairies of central North America, such as the Eastern Prairie Fringed Orchid, Platanthera leucophaea (Nutt.) Lindl.-a U.S. Federally threatened species. RESULTS We provide new records of fungi recovered from roots of P. leucophaea and five other orchid species inhabiting prairie sites in Illinois and neighboring states during a 10-year period (2008-2017). A total of 39 fungal endophytes were isolated from Cypripedium candidum (1), Platanthera lacera (1), P. leucophaea (32), P. peramoena (3), Spiranthes lacera (1), and S. magnicamporum (1), 31 (79%) of which were assignable to Ceratobasidium and the remainder to Tulasnella. These fungi were acquired from 16 different sites, 13 of which are new records including two new state records (Iowa, Wisconsin). Molecular analysis revealed that some Ceratobasidium strains were virtually identical despite being geographically isolated by > 300 km. CONCLUSIONS This study, encompassing a decade of work, confirms that Platanthera leucophaea is a mycorrhizal specialist with heavy reliance on Ceratobasidium with the tallgrass prairie ecosystem of North America. Our isolation of Ceratobasidium from P. leucophaea spanning additional sites suggests that the association is widespread. Such information should provide conservationists and land managers with more confidence in developing protocols that facilitate the long-term conservation of this prairie orchid.

中文翻译:

Ceratobasidium DP Rogers(Basidiomycota)在北美高草草原中作为白斑兰(Ortandaceae)无处不在的真菌伴的证据。

背景技术在美国和加拿大,现在,一半的本地兰花物种面临灭绝的威胁。其中一些物种仅限于北美中部的高草草原,例如东部大草原流苏的兰花,白桦(Nutt。Lindlin。)-美国联邦威胁的物种。结果我们提供了在10年期间(2008-2017年)从伊利诺伊州和邻州草原地区的白斑假单胞菌和其他五种兰花物种的根中回收的真菌的新记录。分别从假丝Cy兰(1),Platanthera lacera(1),P。leucophaea(32),P。peramoena(3),Spiranthes lacera(1)和S. magnicamporum(1)31中分离出39种真菌内生菌。 (79%)可分配给Ceratobasidium,其余可分配给Tulasnella。这些真菌来自16个不同的地点,其中13个是新记录,包括两个新状态记录(爱荷华州,威斯康星州)。分子分析显示,尽管在地理上相距> 300 km,但某些Ceratobasidium菌株实际上是相同的。结论这项涵盖十多年工作的研究证实,白带菌是一种菌根专家,严重依赖北美高草草原生态系统中的角柏科。我们从白斑假单胞菌中分离出的Ceratobasidium跨越了其他位点,表明该关联是广泛的。这些信息应使保护主义者和土地管理者对制定有助于长期保护该大草原兰花的规程更有信心。分子分析显示,尽管在地理上相距> 300 km,但某些Ceratobasidium菌株实际上是相同的。结论这项涵盖十多年工作的研究证实,白带菌是一种菌根专家,严重依赖北美高草草原生态系统中的角柏科。我们从白斑假单胞菌中分离出的Ceratobasidium跨越了其他位点,表明该关联是广泛的。这些信息应使保护主义者和土地管理者对制定有助于长期保护该大草原兰花的规程更有信心。分子分析显示,尽管在地理上相距> 300 km,但某些Ceratobasidium菌株实际上是相同的。结论这项涵盖十多年工作的研究证实,白带菌是一种菌根病专家,在北美高草草原生态系统中严重依赖白盲草(Ceratobasidium)。我们从白斑假单胞菌中分离出的Ceratobasidium跨越了其他位点,表明该关联是广泛的。这些信息应使保护主义者和土地管理者对制定有助于长期保护该大草原兰花的规程更有信心。证实白蚁白蚁菌是一种菌根病专家,在北美高草草原生态系统中严重依赖白屈菜(Ceratobasidium)。我们从白斑假单胞菌中分离出的Ceratobasidium跨越了其他位点,表明该关联是广泛的。这些信息应使保护主义者和土地管理者对制定有助于长期保护该大草原兰花的规程更有信心。证实白蚁白蚁菌是一种菌根病专家,在北美高草草原生态系统中严重依赖白屈菜(Ceratobasidium)。我们从白斑假单胞菌中分离出的Ceratobasidium跨越了其他位点,表明该关联是广泛的。这些信息应使保护主义者和土地管理者对制定有助于长期保护该大草原兰花的规程更有信心。
更新日期:2020-04-15
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