Department of Environmental and Biological Sciences, University of Eastern Finland, FI-70211 Kuopio, Finland.
Department of Environmental and Biological Sciences, University of Eastern Finland, FI-70211 Kuopio, Finland.
Trends Plant Sci. 2017 Sep;22(9):744-753. doi: 10.1016/j.tplants.2017.07.004. Epub 2017 Aug 5.
Biogenic secondary organic aerosol (SOA) and deposited secondary organic material (SOM) are formed by oxidation of volatile organic compounds (VOCs) emitted by plants. Many SOA compounds have much longer chemical lifetimes than the original VOC, and may accumulate on plant surfaces and in soil as SOM because of their low volatility. This suggests that they may have important and presently unrecognized roles in plant adaptation. Using reactive plant terpenoids as a model we propose a three-tier (atmosphere-vegetation-soil) framework to better understand the ecological and evolutionary functions of SOM. In this framework, SOA in the atmosphere is known to affect solar radiation, SOM on the plant surfaces influences the interactive organisms, and wet and dry deposition of SOM on soil affects soil organisms.
生物成因的二次有机气溶胶 (SOA) 和沉积的次生有机物质 (SOM) 是由植物排放的挥发性有机化合物 (VOC) 氧化形成的。许多 SOA 化合物的化学寿命比原始 VOC 长得多，由于挥发性低，它们可能在植物表面和土壤中积累为 SOM。这表明它们可能在植物适应中具有重要且目前尚未被认识到的作用。使用反应性植物萜烯作为模型，我们提出了一个三层（大气-植被-土壤）框架，以更好地理解 SOM 的生态和进化功能。在这个框架中，大气中的 SOA 被认为会影响太阳辐射，植物表面的 SOM 会影响相互作用的生物，而 SOM 的湿沉降和干沉降会影响土壤生物。
