[Micro-morphological variation pattern of Isaria cicadae].

微生物学报 Pub Date : 2017-03-04
Wenbo Zeng, Chenxin Chang, Jianping Li, Yuanbing Wang, Yongbong Dai, Hong Yu
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Abstract

Objective: To reveal the morphological pattern of Isaria cicadae.

Methods: We observed 17 morphological characters and measured 75 strains of 15 populations in I. cicadae. Statistical analysis system (SAS) 8.1 was used to analyze the morphological data, the morphological pattern was analyzed in 15 populations of I. cicadae, using the descriptive statistical analysis, nested analysis and Q cluster analysis.

Results: Two types of asexual conidium (large and small conidium) were observed in I. cicadae. The gourd-shaped and bottle-shaped conidiogenous cells were observed in I. cicadae. Many chlamydospores of I. cicadae were easy to form in PDA medium. Many fusion hyphae were generated between hyphae, and some fusion hyphae between hypha and chlamydospore, the fusion hyphae between conidiogenous cells were also observed. The CV of 17 morphological characters was from 13.07 to 104.09% in I. cicadae, indicating an ample morphological diversity at the species level. The nested variation analysis of the 17 morphological characters indicated that about 11.29% of the variability was attributable to the differentiation among populations, the rest 15.27% of the variability was derived from individual strains, and the remaining 73.44% was resided in the observations in the same strain.

Conclusion: The phenotypic variation within strain was the main morphological variation of I. cicadae. The morphological characters had no significant relationship with geographical origin in I. cicadae.

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[蝉属植物微形态变异模式]。
目的:揭示蝉刺的形态特征。方法:对蝉蝉15个居群的75个品系的17个形态特征进行了观察。采用统计分析系统(SAS) 8.1对形态资料进行分析,采用描述性统计分析、嵌套分析和Q聚类分析对蝉蝉15个居群的形态格局进行分析。结果:蝉的无性分生孢子分为大分生孢子和小分生孢子两种。蝉的分生细胞有葫芦形和瓶形。蝉衣孢子在PDA培养基中容易形成。菌丝之间产生了许多融合菌丝,菌丝与衣孢子之间也有一些融合菌丝,分生细胞之间也有融合菌丝。蝉科17个形态性状的变异系数为13.07 ~ 104.09%,表明蝉科在种水平上具有丰富的形态多样性。对17个形态性状的巢式变异分析表明,11.29%的变异可归因于种群间的分化,15.27%的变异可归因于单个品系,73.44%的变异可归因于同一品系的观察结果。结论:株内表型变异是蝉蝉主要的形态变异。蝉的形态特征与地理来源无显著关系。
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期刊介绍: Acta Microbiologica Sinica(AMS) is a peer-reviewed monthly (one volume per year)international journal,founded in 1953.It covers a wide range of topics in the areas of general and applied microbiology.The journal publishes original papers,reviews in microbiological science,and short communications describing unusual observations. Acta Microbiologica Sinica has been indexed in Index Copernicus (IC),Chemical Abstract (CA),Excerpt Medica Database (EMBASE),AJ of Viniti (Russia),Biological Abstracts (BA),Chinese Science Citation Database (CSCD),China National Knowledge Infrastructure(CNKI),Institute of Scientific and Technical Information of China(ISTIC),Chinese Journal Citation Report(CJCR),Chinese Biological Abstracts,Chinese Pharmaceutical Abstracts,Chinese Medical Abstracts and Chinese Science Abstracts.
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