Journal
APPLIED SCIENCES-BASEL
Volume 11, Issue 19, Pages -Publisher
MDPI
DOI: 10.3390/app11199182
Keywords
soil microbiology; cultivation; isotope probing; nanoSIMS; microfluidics; heterogeneity; microbial communication; distribution
Categories
Funding
- Austrian Science Fund (FWF)
- Land Tirol (project Microbial Interactions in Snow-covered soil) [MICINSNOW-P31038]
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Microorganisms in soil only directly experience a small portion of the environmental heterogeneity, which affects the distribution and interactions of fungi and bacteria. Understanding bacterial-fungal interactions requires consideration of the spatiotemporal complexity of their microenvironments.
Due to their small size, microorganisms directly experience only a tiny portion of the environmental heterogeneity manifested in the soil. The microscale variations in soil properties constrain the distribution of fungi and bacteria, and the extent to which they can interact with each other, thereby directly influencing their behavior and ecological roles. Thus, to obtain a realistic understanding of bacterial-fungal interactions, the spatiotemporal complexity of their microenvironments must be accounted for. The objective of this review is to further raise awareness of this important aspect and to discuss an overview of possible methodologies, some of easier applicability than others, that can be implemented in the experimental design in this field of research. The experimental design can be rationalized in three different scales, namely reconstructing the physicochemical complexity of the soil matrix, identifying and locating fungi and bacteria to depict their physical interactions, and, lastly, analyzing their molecular environment to describe their activity. In the long term, only relevant experimental data at the cell-to-cell level can provide the base for any solid theory or model that may serve for accurate functional prediction at the ecosystem level. The way to this level of application is still long, but we should all start small.
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