Inner Mongolia Alxa white cashmere goat milk and its dairy products with rich nutritional value and outstanding health care functions, serve as a vital source of dairy for local herders, but few studies related to the diversity of fungi that play a probiotic role have been reported. Therefore, in this study, Illumina-Miseq sequencing technology was used to determine the fungal ITS gene sequences in white cashmere goat milk, bishylag and airiga, and the comparison of fungal community structure and diversity were conducted. The results showed that the Shannon index of fungi in white cashmere goat milk and bishylag was significantly higher than that in airiga (P<0.05), while the Simpson index was significantly lower (P<0.05). However, there was no significant difference (P>0.05) between the Shannon and Simpson indices of the fungi in white cashmere goat milk and bishylag. Additionally, no significant differences were found in the Ace and Chao indices among white cashmere goat milk, bishylag and airiga (P>0.05). Beta diversity analysis revealed a high similarity in fungal community composition between white cashmere goat milk and bishylag, whereas the fungal community structure of airiga was distinct from that of white cashmere goat milk and bishylag. The dominant fungal phyla in white cashmere goat milk, bishylag and airiga were Ascomycota and Basidiomycota. At the genus level, the dominant fungi were Apiotrichum, Cutaneotrichosporon, Cladosporium and Alternaria in white cashmere goat milk; Apiotrichum, Cutaneotrichosporon and Filobasidium in bishylag; and Issatchenkia, Rhodotorula, Kazachstania and Pichia in airiga. The relative abundance of fungal metabolism-relatde enzymes in white cashmere goat milk and its dairy products was higher for glucan 1, 4-alpha-glucosidase, adenosine triphosphatase, DNA-directed RNA polymerase, exo-alpha-sialidase, and peptidylprolyl isomerase. FUNGuild functional prediction indicated that saprotrophic fungi were the main nutritional mode in white cashmere goat milk and its dairy products. These findings not only establish a comprehensive understanding of fungal diversity in white cashmere goat milk and its dairy products in Alxa, Inner Mongolia, but also provide a basis for the study and safety evaluation of fungi in white cashmere goat milk and its dairy products.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |