Mycelial Growth of Pleurotus Spp in Se-Enriched Culture Media

作     者：Marliane de Cássia Soares da Silva Mateus Dias Nunes Jose Maria Rodrigues da Luz Maria Catarina Megumi Kasuya 

作者机构：Departamento de MicrobiologiaFederal University of VicosaCampus UFVVicosaBrazil 

出 版 物：《Advances in Microbiology》 (微生物学（英文）)

年 卷 期：2013年第3卷第8期

页      面：11-18页

学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学] 

主　　题：Mushrooms Colony Morphology Food Sodium Selenite Hyphae Diameter 

摘      要：Selenium (Se) is an essential element to human. However, this element can be in low content in soil of some regions. Se deficiency may cause Keshan disease, thyroid dysfunction and osteoarthritis. The Se-enriched cereals are an interesting way to prevent these diseases. But, recent studies have shown that Se-enriched mushrooms are a better Se source. This occurs due to the high capacity of the fungi to absorb and transform the inorganic Se to organic forms, which are more bioavailable. Pleurotus ostreatus and Pleurotus eryngii are mushrooms species worldwide consumed and able to Se bioaccumulate. However, depending on the level of this element, it can be toxic for the fungus. Here we showed that the presence of the Se in culture medium decreases fungal growth rate, hyphae diameter and septum distance and causes alteration in color of colony. A garlic strong smell was directly proportional to Se level. P. eryngii was more tolerant to Se than P. ostreatus. So, it is important to screen this element level for Se-enriched mushroom production.