Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, P.R. China.
Int J Med Mushrooms. 2020;22(5):479-488. doi: 10.1615/IntJMedMushrooms.2020034704.
Polyporus umbellatus is a traditional Chinese medicinal mushroom. The growth of P. umbellatus sclerotia requires the rhizomorphs of Armillaria spp. to supply nutrition. Whether the main components (MC) of sclerotia of P. umbellatus are related to the phylogeny of Armillaria associates or other environmental factors is largely unknown. In this study, we collected 17 sclerotia and soil samples from northeast to southwest China. In total, 17 Armillaria associates were isolated, and sclerotial MC contents and soil characteristics (total N, P, K, and organic matter) were determined. The analysis revealed that the MC content of P. umbellatus did not resemble a Brownian motion process in phylogeny of Armillaria associates, but were significantly influenced by the total N content of the soil. These results provide clear evidence that sclerotia of P. umbellatus associating with phylogenetic related Armillaria associates possess differing MC content. The mechanisms of nutrient exchange in P. umbellatus-Armillaria associations now require further elucidation.
药用真菌猪苓的子实体生长需要依靠蜜环菌的菌索来提供营养。然而，猪苓子实体的主要成分（MC）与蜜环菌属的系统发育关系，还是其他环境因素，在很大程度上尚不清楚。本研究在中国的东北到西南地区收集了 17 份猪苓子实体和土壤样本。总共分离出 17 种蜜环菌属的相关种，同时测定了子实体 MC 含量和土壤特性（总氮、磷、钾和有机质）。分析表明，猪苓子实体 MC 含量在蜜环菌属的系统发育中不呈现布朗运动过程，而与土壤的总氮含量显著相关。这些结果提供了明确的证据，表明与系统发育相关的蜜环菌属相关的猪苓子实体具有不同的 MC 含量。猪苓-蜜环菌菌根的养分交换机制还需要进一步阐明。
