1 Ministry of Agriculture Key Laboratory of Pest Monitoring and Green Management, Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
2 State Key Laboratory of Agricultural Microbiology and Key Laboratory of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan 430070, China.
Plant Dis. 2019 Jul;103(7):1721-1727. doi: 10.1094/PDIS-07-18-1284-RE. Epub 2019 May 16.
is an important perennial medicinal plant in China. A disease similar to gray mold on . occurred at the seedling stage in March 2016 and 2017 in Tengchong city, Yunnan Province of China. The disease resulted in up to 50% mortality in serious cases. Isolates from diseased plants grew 10.6 mm/day at 20°C on PDA. After 21 days, sclerotia were spherical to elliptical (0.4-2.5 × 0.3-1.8 mm). Conidia from diseased tissues were hyaline to pale brown, long, ovoid, unicellular, and measured 15.1-24.5 × 8.8-13.4 μm; conidiophores were 526-1,064 ×12-15 μm. Isolates did not form conidiophores or conidia on PDA or MYA. A phylogenetic analysis based on G3PDH, RPB2, and HSP60 sequence data supported assignment of three representative isolates as a new species of Based on morphological, phylogenetic characteristics and Koch's Postulates, the causal agent of gray mold on . was identified as a novel species, .
是中国一种重要的多年生药用植物。2016 年和 2017 年，在中国云南省腾冲市， 出现了一种类似灰霉病的病害，在严重情况下，该病的死亡率高达 50%。在 20°C 的 PDA 上，来自患病植株的分离物的生长速度为 10.6mm/天。21 天后，菌核呈球形到椭圆形（0.4-2.5×0.3-1.8mm）。来自患病组织的分生孢子为半透明到浅棕色，长，卵圆，单细胞，大小为 15.1-24.5×8.8-13.4μm；分生孢子梗为 526-1064×12-15μm。在 PDA 或 MYA 上，分离物均未形成分生孢子梗或分生孢子。基于 G3PDH、RPB2 和 HSP60 序列数据的系统发育分析支持将三个代表分离物鉴定为 属的一个新种。基于形态学、系统发育特征和柯赫氏法则， 被确认为一种新的病原菌，即 。
