北虫草组织分离子实体生长情况的研究
2015-07-13李青苗郭俊霞王晓宇等
李青苗 郭俊霞 王晓宇等
摘要
[目的]通过对优选菌种长势较好的7株子实体组织分离后再培养,研究子实体生长情况,为北虫草菌种的复壮技术提供一定的理论依据。[方法]从子实体性状、产量及虫草多糖含量测定等方面进行比较研究。[结果]子实体颜色均为金黄色,可以保持母种的颜色性状;除C1-柄分离后,子实体的长相纤细,与母种长相粗壮有差异外,其他菌株头柄分离后子实体长相均可以保持母种的长相性状;除C3-柄、C5-柄、C6-柄外,其他分离菌株子实体的最大长度均高于母种;除C3-柄、C5-柄、C6-柄外,其他菌株分离子实体的产量均高于母种;各菌株不同分离部位组织分离后再培养子实体多糖含量与母种的多糖含量无明显差异。[结论]组织分离可作为获得北虫草优质菌种的有效方法之一。
关键词 北虫草; 组织分离;子实体
中图分类号 S188 文献标识码 A 文章编号 0517-6611(2015)15-003-02
Study on Growth Status of Cordyceps militaris Tissue Isolation Fruiting Body
LI Qingmiao, GUO Junxia*, WANG Xiaoyu et al
(Sichuan Academy of Chinese Medicine Sciences, Chengdu, Sichuan 610041)
Abstract [Objective] To study status of Cordyceps militaris tissue isolation fruiting body growth, provide certain theory basis for the rejuvenation technology of Cordyceps militaris. [Method] The fruiting body traits, yield, Cordyceps polysaccharide content and other aspects were comparatively studied. [Result] Fruiting bodies are golden yellow color, can keep mother character; fruiting body appearance, can keep mother species character except C1 handle, the longest length of strain was isolated from the fruiting body, except the C3handle, C5handle, C6handle, the maximum length of the other strains were higher than the mother species; the yield of fruiting body were higher than the mother species except C3, C5, C6handle; No significant difference of polysaccharide content between the fruiting body and the mother species. [Conclusion] Tissue isolation method can be used as an effective method to obtain high quality strains of Cordyceps militaris.
Key words Cordyceps militaris; Tissue isolation; Fruiting body
北冬蟲夏草(Cordyceps militaris(L.ex Fr.)link)简称北虫草,又名蛹虫草,属子囊菌亚门核菌纲球壳菌目麦角菌科虫草属真菌,是虫草属的模式种,是同冬虫夏草极为相近的一个种,属药食两用真菌类[1]。经研究证实,其化学成分与冬虫夏草相近,含有虫草素、虫草酸、氧化物歧化酶(SOD)等生物活性物质及蛋白质、氨基酸、维生素及钙、锰、锌、硒等微量元素,与天然冬虫夏草有相似的医疗保健功效[1],是冬虫夏草的理想替代品。虫草中的各种活性成分具有不同的功效。虫草氨基酸是虫草补益强壮作用和增强免疫功能的物质基础之一[2];……
