期刊
ANNUAL REVIEW OF MICROBIOLOGY
卷 63, 期 -, 页码 431-450出版社
ANNUAL REVIEWS
DOI: 10.1146/annurev.micro.091208.073349
关键词
cyanobacteria; geobiology; microcolonial fungi; rock inhabiting fungi-phototroph symbioses; soil formation; subaerial biofilms; weathering
类别
资金
- Feodor-Lynen Scholarship of the Alexander von Humboldt Foundation
- Swiss National Science Foundation [3100AO_116858/1, IZK0A0-119407, 3100AO-122513/1]
- DFG [KON 1416/2007 GO 897/9-1]
Life at the atmosphere-lithosphere boundary is an ancient terrestrial niche that is sparsely covered by thin subaerial biofilms. The microbial inhabitants of these biofilms (a) have adapted to all types of terrestrial/subaerial stresses (e.g., desiccation, extreme temperatures, low nutrient availability intense solar radiation), (b) interact with minerals that serve is both a dwelling and a Source of mineral nutrients, and (c) provoke weathering of rocks and soil formation. Subaerial communities comprise heterotrophic and phototrophic microorganisms that support each other's lifestyle. Major lineages of eubacteria associated with the early colonization of land (e.g., Actinobacteria, Cyanobacteria) are present in these habitats along with eukaryotes such as microscopic green algae and ascomycetous fungi. The subaerial biofilm inhabitants have adapted to desiccation, solar radiation, and other environmental challenges by developing protective, melanized cell walls, assuming microcolonial architectures and symbiotic lifestyles. How these changes occurred, their significance in soil formation, and their potential as markets of climate change are discussed below.
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