[Biological and epidemiological characteristics of the pathogen of hypertrophy sorosis scleroteniosis, Ciboria shiraiana].

微生物学报 Pub Date : 2017-03-04

Ruihua Lü, Aichun Zhao, Jian Yu, Chuanhong Wang, Changying Liu, Yuxiang Cai, Maode Yu

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Abstract

Objective: We studied the biological and the epidemiological characteristics of the pathogen of hypertrophy sorosis scleroteniosis, which is a devastating fungal disease of mulberry.

Methods: We studied the asexual and sexual reproductive phase stages of C. shiraiana, including the infection ability of hyphal, dormancy of sclerotia, the structures, release, number and germination of ascospores from apothecia, as well as the phenology of sclerotial germination.

Results: In C. shiraiana, hyphae had no infection ability toward the female flowers of mulberry. Sclerotia of C. shiraiana must undergo cold treatment above 6 weeks, then the dormancy-breaking sclerotia could germinate to apothecia. One to fifteen apothecia were germinated from one sclerotium, and the number of ascospores in a 1.5 cm diameter apothecia could contain up to (5.6-6.3)×107. Ascospore C. shiraiana had significantly higher germination rates in acid than in neutral and alkaline environments. From late January to middle April, sclerotia germinated to apothecia, and got the highest value in the middle of March.

Conclusion: C. shiraiana is a formidable pathogen to cause epidemic disease and damage in mulberry.

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[肥厚性硬化症(Ciboria shiraiana)病原生物学和流行病学特征]。

目的:研究桑树真菌致病菌肥厚硬化病的生物学和流行病学特征。方法:研究了白僵菌无性生殖和有性生殖阶段的菌丝侵染能力、菌核休眠、药菇子囊孢子的结构、释放、数量和萌发，以及菌核萌发的物候特征。结果:白孢霉菌丝对桑树雌花无侵染能力。白僵菌必须经过6周以上的冷处理，才能使破休眠菌核萌发成药。1个菌核可萌发1 ~ 15个囊孢，直径1.5 cm的囊孢中子囊孢子数可达(5.6 ~ 6.3)×107。子囊孢子在酸性环境下的发芽率显著高于中性和碱性环境。从1月下旬到4月中旬，菌核萌发为中药材，3月中旬达到最高值。结论:白孢梭菌是桑树疫病和危害的强大病原菌。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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微生物学报

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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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