Note on a snow mold and a fungus-like microbe from Kuujjuarapik-Whapmagoostui, Quebec, subarctic Canada
Note on a snow mold and a fungus-like microbe from Kuujjuarapik-Whapmagoostui, Quebec, subarctic Canada
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DOI：
10.1016/j.polar.2020.100559
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发表时间：
2021-04-02
期刊：
影响因子：
1.8
通讯作者：
Tojo, Motoaki
中科院分区：
文献类型：
--
作者：
Hoshino, Tamotsu;Nakagawa, Takuya;Tojo, Motoaki
在2016年8月至9月在位于哈德逊湾东南海岸的亚北极加拿大魁北克Kuujjuarapik-Whapmagoostui进行的实地研究期间获得了新真菌的分离物和新真菌样微生物的分离物。分离物被鉴定为Typhula sp.和Globisporangium sp.（syn.腐霉属（Pythium sp.），分别从收集自Kuujjuarapik-Whapmagoostui的Great Whale River河岸上的海豌豆（Lathyrus）的枯叶的小菌核（大小为0.2-0.7 X 0.5-1.2 mm）分离具有夹子连接的菌丝体。该菌株与T.根据不同温度下的菌核形态和菌丝生长情况，研究了不同温度下的菌核形态和菌丝生长情况。Globisporangium sp.分离物与G.基于rDNAITS系统发育分析，对Okanoganense进行了系统发育分析。G. Okanoganense已知是引起小麦和其它冬季作物雪腐病的重要病原体。需要进一步的研究来确定在Kuujjuarapik-Whapmagoostui发现的新型真菌和真菌样微生物是否像与它们密切相关的雪腐病病原体一样具有植物病原性。
An isolate of a novel fungus and an isolate of a novel fungus-like microbe were obtained during field research conducted in Kuujjuarapik-Whapmagoostui, Quebec, in subarctic Canada, located on the southeastern coast of Hudson Bay, from August to September 2016. The isolates were identified as a Typhula sp. and Globisporangium sp. (syn. Pythium sp.), respectively. Mycelia with clamps connections were isolated from small sclerotia (0.2-0.7 x 0.5-1.2 mm in size) collected from dead leaves of sea pea (Lathyrus japonicus) on the banks of the Great Whale River in Kuujjuarapik-Whapmagoostui. The isolate was found to be closely related with T. japonica based on sclerotium morphology and hyphal growth under different temperatures. The Globisporangium sp. isolate was found to be most closely related to G. okanoganense based on phylogenetic analyses using rDNAITS. G. okanoganense is known as an important pathogen causing snow rot on wheat and other winter crops. Further investigation is needed to determine whether the novel fungus and fungus-like microbe found in Kuujjuarapik-Whapmagoostui are phytopathogenic like the snow rot pathogens to which they are closely related.