期刊
YEAST
卷 39, 期 1-2, 页码 95-107出版社
WILEY
DOI: 10.1002/yea.3665
关键词
fungi; honeybee; microbiota; yeast
资金
- Agricultural Research Service (ARS) Research Associate Program
Research has shown that yeasts can survive and exist at relatively low levels throughout the development of bees, while known bacterial mutualists are generally not found in pre-eclosed adult bees. Whether yeasts are actively retained as an important part of the bee microbiota or passively propagating in the colony remains unknown.
Honeybee symbionts, predominantly bacteria, play important roles in honeybee health, nutrition, and pathogen protection, thereby supporting colony health. On the other hand, fungi are often considered indicators of poor bee health, and honeybee microbiome studies generally exclude fungi and yeasts. We hypothesized that yeasts may be an important aspect of early honeybee biology, and if yeasts provide a mutual benefit to their hosts, then honeybees could provide a refuge during metamorphosis to ensure the presence of yeasts at emergence. We surveyed for yeast and fungi during pupal development and metamorphosis in worker bees using fungal-specific quantitative polymerase chain reaction (qPCR), next-generation sequencing, and standard microbiological culturing. On the basis of yeast presence in three distinct apiaries and multiple developmental stages, we conclude that yeasts can survive through metamorphosis and in naive worker bees, albeit at relatively low levels. In comparison, known bacterial mutualists, like Gilliamella and Snodgrassella, were generally not found in pre-eclosed adult bees. Whether yeasts are actively retained as an important part of the bee microbiota or are passively propagating in the colony remains unknown. Our demonstration of the constancy of yeasts throughout development provides a framework to further understand the honeybee microbiota.
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