Water-damaged buildings can lead to fungal growth and occupant health problems. Green building materials, derived from renewable sources, are increasingly utilized in construction and renovations. However, the question as to what fungi will grow on these green compared to non-green materials, after they get wet, has not been adequately studied. By determining what fungi grow on each type of material, the potential health risks can be more adequately assessed. In this study, we inoculated green and non-green pieces of ceiling tile, composite board, drywall, and flooring with indoor dust containing a complex mixture of naturally occurring fungi. The materials were saturated with water and incubated for two months in a controlled environment. The resulting fungal microbiomes were evaluated using ITS amplicon sequencing. Overall, the richness and diversity of the mycobiomes on each pair of green and non-green pieces were not significantly different. However, different genera dominated on each type of material. For example, Aspergillus spp. had the highest relative abundance on green and non-green ceiling tiles and green composite boards, but Peniophora spp. dominated the non-green composite board. In contrast, Penicillium spp. dominated green and non-green flooring samples. Green gypsum board was dominated by Phialophora spp. and Stachybotrys spp., but non-green gypsum board by Myrothecium spp. These data suggest that water-damaged green and non-green building materials can result in mycobiomes that are dominated by fungal genera whose member species pose different potentials for health risks.

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与绿色和非绿色建筑材料相关的真菌微生物组

被水损坏的建筑物会导致真菌生长和居住者的健康问题。来自可再生资源的绿色建筑材料越来越多地用于建筑和装修。然而，与非绿色材料相比，这些绿色材料在受潮后会生长哪些真菌的问题尚未得到充分研究。通过确定每种材料上生长的真菌，可以更充分地评估潜在的健康风险。在这项研究中，我们用含有天然真菌复杂混合物的室内灰尘接种了绿色和非绿色的天花板瓷砖、复合板、干墙和地板。将材料用水饱和并在受控环境中培育两个月。使用 ITS 扩增子测序评估所得真菌微生物组。总体而言，每对绿色和非绿色碎片上真菌生物群的丰富度和多样性没有显着差异。然而，不同的属在每种类型的材料上占主导地位。例如，曲霉属。在绿色和非绿色天花板瓷砖以及绿色复合板上具有最高的相对丰度，但 Peniophora spp. 以非绿色复合板为主。相反，青霉菌属。主要是绿色和非绿色地板样品。绿色石膏板以瓶霉属 (Phialophora spp) 为主。和 Stachybotrys spp.，但非绿色石膏板由 Myrothecium spp. 生产。这些数据表明，受水损坏的绿色和非绿色建筑材料可能会产生以真菌属为主的真菌生物群落，其成员物种对健康风险具有不同的潜在风险。