Ceratorhiza pernacatena and Epulorhiza calendulina spp.nov.: mycorrhizal fungi of terrestrial orchids
Ceratorhiza pernacatena and Epulorhiza calendulina spp.nov.: mycorrhizal fungi of terrestrial orchids
复制标题
Ceratorhiza pernacatena 和 Epulorhiza calendulina spp.nov.：陆生兰花的菌根真菌
作者：
C. D. Zelmer;R. Currah
本文描述了两种与原产于加拿大大草原的陆生兰花共生的菌根真菌新种。nov.，来自Platanthera praeclara的菌根，产生球状念珠状细胞，通过狭窄的管状连接连接，连接包含相邻细胞之间的隔膜。菌丝为双核，宽5-7 μm，具规则的隔膜，具小的薄壁体。 产生纤维素酶，但多酚氧化酶的产生很低甚至不存在。，来自圆叶美洲根瘤菌的菌根，通过在马铃薯葡萄糖琼脂上的菌落的橙子至赭石色而与其它种的根瘤菌区分。在玉米粉琼脂上，棒状至不规则的念珠状细胞产生于菌丝侧枝上的短而分枝的链。游动菌丝为双核，宽3.0-4.7 μm，具规则的隔膜，薄壁体扁平，不规则。 多酚氧化酶生产缺乏，但纤维素酶的生产。关键词：兰花菌根
Two new species of fungi mycorrhizal with terrestrial orchids native to the Canadian prairies are described and illustrated. Ceratorhiza pernacatena sp.nov., from mycorrhizas of Platanthera praeclara, produces globose monilioid cells linked by narrow, tubular, connections that contain the septum between adjacent cells. Hyphae are binucleate, 5–7 μm in width, regularly septate with perforate parenthesomes. Cellulase is produced, but polyphenol oxidase production is low to absent. Epulorhiza calendulina sp.nov., from mycorrhizas of Amerorchis rotundifolia, is distinguished from other Epulorhiza species by the orange to ochre colour of colonies on potato dextrose agar. On corn meal agar, clavate to irregular monilioid cells are produced in short, branched, chains arising from lateral hyphal branches. Runner hyphae are binucleate, 3.0–4.7 μm in width, regularly septate, with flattened, imperforate parenthesomes. Polyphenol oxidase production is lacking, but cellulase is produced. Key words: orchid mycorrhizas...