期刊
ACS EARTH AND SPACE CHEMISTRY
卷 4, 期 10, 页码 1895-1905出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsearthspacechem.0c00144
关键词
Biological Particles; grass; phyllosphere; microspectroscopy; microorganisms; Brachypodium distachyon; bioaerosol; atmosphere-biosphere interactions
资金
- U.S. Department of Energy Office of Science, Office of Biological and Environmental Research [DE-AC05-76RL01830]
- Pacific Northwest National Laboratory (PNNL) through the iPASS Initiative
- Pacific Northwest National Laboratory (PNNL) through PREMIS Initiative
- Chemical Imaging Initiative of the Laboratory Directed Research and Development program at PNNL
- U.S. Department of Energy's Atmospheric System Research program, an Office of Science, Office of Biological and Environmental Research (OBER)
- OBER at PNNL
- Office of Science, Office of Basic Energy Sciences of the U.S. Department of Energy [DE-AC02-05CH11231]
- Office of Basic Energy Sciences Division of Chemical Sciences, Geosciences, and Biosciences by the Condensed Phase and Interfacial Molecular Sciences Program of the U.S. Department of Energy
- [DE-AC06-76RL0]
Airborne biological aerosols are an integral part of the atmosphere-biosphere interface and significantly impact the environment and Earth's climate. Primary biological particles such as fungal spores, bacteria, and fragments of plant debris are emitted directly from the biosphere into the atmosphere. The phyllosphere (aboveground plant surfaces) is one of the major habitats for different microbes. In this study, atmospheric emissions of primary biological particles from model grass Brachypodium distachyon were monitored by online particle number concentration counting at eight principal growth stages starting from leaf development to senescence. Particles collected at each of the growth stages were then characterized using microspectroscopy techniques. Our findings indicate that the morphological and compositional characteristics of emitted biological particles are highly variable at the different growth stages. We identified fungal spores as the most abundant biological particles in the heading stage, while bacteria were most abundant in the flowering and fruit development stages. Understanding differences in the composition and morphology of biological particles during the plant life cycle provides more accurate and reliable insights on structural, functional, and biochemical properties of plant systems, as well as their interactions with microbial communities. This study also provides insights into Earth geoscience system models that represent primary biological particle emissions from the biosphere.
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