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Morel mushrooms (Morchella, Pezizales) are highly prized edible fungi. Approaches to cultivate morels indoors in pasteurized composted substrates have been successful for Morchella rufobrunnea. We used DNA amplicon sequencing of the Internal Transcribed Spacer (ITS) and 16S ribosomal DNA to follow bacterial and fungal communities in substrates during indoor morel cultivation. Our goal was to determine changes in microbial communities at key stages of morel cultivation, which included primordia development, fundament initiation, differentiation and maturation. Additionally, we compared microbial communities between trays that successfully fruited to those that produced conidia and primordia but aborted before ascocarp formation (non-fruiting). The prokaryotic community was dominated by Firmicutes belonging to Bacillus and Paenibacillus with a lower abundance of Flavobacteria. At earlier stages, the fungal community was dominated by Pezizomycetes including Morchella and other species, whereas, later in the cropping cycle Sordariomycetes dominated. Additionally, differences were observed between trays with successful fruiting, which were dominated by Gilmaniella; compared to trays that did not fruit, which were dominated by Cephalotrichum. Our findings inform understanding of microbial community dynamics during morel cultivation, and show that fungal genera such as Gilmaniella and prokaryotic genera such as Bacillus are abundant in substrates that support M. rufobrunnea fruiting.
This article was published in the following journal.
Name: FEMS microbiology letters
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The bacterial sugar phosphotransferase system (PTS) that catalyzes the transfer of the phosphoryl group from phosphoenolpyruvate to its sugar substrates (the PTS sugars) concomitant with the translocation of these sugars across the bacterial membrane. The phosphorylation of a given sugar requires four proteins, two general proteins, Enzyme I and HPr and a pair of sugar-specific proteins designated as the Enzyme II complex. The PTS has also been implicated in the induction of synthesis of some catabolic enzyme systems required for the utilization of sugars that are not substrates of the PTS as well as the regulation of the activity of adenylate cyclase. EC 2.7.1.-.
Cell wall components constituting a polysaccharide core found in fungi. They may act as antigens or structural substrates.
The collective designation of three organizations with common membership: the European Economic Community (Common Market), the European Coal and Steel Community, and the European Atomic Energy Community (Euratom). It was known as the European Community until 1994. It is primarily an economic union with the principal objectives of free movement of goods, capital, and labor. Professional services, social, medical and paramedical, are subsumed under labor. The constituent countries are Austria, Belgium, Denmark, Finland, France, Germany, Greece, Ireland, Italy, Luxembourg, Netherlands, Portugal, Spain, Sweden, and the United Kingdom. (The World Almanac and Book of Facts 1997, p842)
Toxins produced, especially by bacterial or fungal cells, and released into the culture medium or environment.
The protoplasm and plasma membrane of plant, fungal, bacterial or archaeon cells without the CELL WALL.
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