Morphological Diversity of Neotyphodium sinicum in Chinese native Roegneria plants
会议名称：《2010年中国菌物学会学术年会》
会议日期：2010年
学科分类：0710[理学-生物学] 1007[医学-药学(可授医学、理学学位)] 100705[医学-微生物与生化药学] 07[理学] 071005[理学-微生物学] 10[医学]
基 金：Supported by NSFC of China(No.30070019 and 30670008)
关 键 词：Neotyphodium sinicum Roegneria spp. morphological characteristics
摘 要：正Neotyphodium sinicum compose natural symbionts with asymptomatic Roegneria spp. native to *** Fujian,Jiangsu,Shanghai,Anhui,Hubei,Shandong,Shanxi,Hebei, Changchun,we collected 2243 asymptomatic Roegneria plants,46.0%were detected to be endophytes *** characteristics of 40 Neotyphodium isolates obtained from Roegneria plants of different provinces in China were *** PDA plates,colonies white,cottony,grow rapidly with a rate of 7.5-61.7 mm/*** colonies were divided into 5 *** A:The colony has potuberance in the middle,circular,smooth,and regular edge,it like a *** B:The colony has no protuberance in middle,circular,smooth and regular edge. Type C:They are slightly brain-like,draped surface and have regular *** D:They are *** E:colony has a small potuberance in the middle,irregular,smooth surface and regular *** one isolate belong to Type *** hyaline,reniform to elliptical,4.7-7.3μm×2.6-3.2μ*** cells discrete,arising solitary from the aerial mycelium, septated at the base or middle,hyaline,smooth,16.2-24.5×1.9-2.7μ*** are high variable among conidia *** cells were solitary and arose perpendicularly from the hyphae with a small head at *** is no relationship between size of conidia and conidiogenous cells and colony ***-Roegneria symbiotum have a wide distribution in most areas of *** characteristics of the endophytic fungus obtained from this symbiotum grown in China exhibit abundant diversity,indicating an early appearance of this *** phylogenetic evidences indicated that *** should be an interspecific hybrid between members belonging to ETC and EBY,the ***/E. yangzii *** is necessary to investigate their genetic diversity in future.