酵母
性二态性
菌丝
生物
食品科学
过渡(遗传学)
植物
碳源
化学
生物化学
动物
基因
作者
Lihua Hou,Yi Chen,Chengjie Ma,Juan Liu,Liguo Chen,Anqi Ma
出处
期刊:Cryptogamie Mycologie
[BioOne (Museum National d'Histoire Naturelle, Paris, France)]
日期:2011-12-01
卷期号:32 (4): 421-428
被引量:8
标识
DOI:10.7872/crym.v32.iss4.2011.421
摘要
Tremella fuciformis, a typical dimorphic fungus, displays two distinct morphological transitions: (i) yeast-pseudohyphae transition; (ii) yeast-hyphae transition. To understand the mechanism of its dimorphism, we initiated a study by investigating how environmental factors affect the yeast-to-pseudohypha transition, including pH value, temperature, carbon source, nitrogen source, cultural time, ethanol and inoculum size. Our studies showed that the optimal conditions for yeast-to-pseudohypha transition were as follows: incubating at 25 to 30°C for 3 to 7 days in media containing glucose as the carbon source, ammonium as the nitrogen source and 10 ml/L ethanol. Below a threshold of inoculum size (105 cells/L), the transition ratio fluctuated markedly, which made us propose that quorum sensing molecules contribute to the dimorphic behavior in T. fuciformis.
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