Volatile-mediated antagonism of soil bacterial communities against fungi.

Autor: Li X; Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, 210037, China.; Department of Microbial Ecology, Netherlands Institute of Ecology, NIOO-KNAW, Wageningen, 6708 PB, The Netherlands.; CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China., Garbeva P; Department of Microbial Ecology, Netherlands Institute of Ecology, NIOO-KNAW, Wageningen, 6708 PB, The Netherlands., Liu X; Department of Microbial Ecology, Netherlands Institute of Ecology, NIOO-KNAW, Wageningen, 6708 PB, The Netherlands.; College of Plant Protection, Southwest University, Chongqing, 400715, China., Klein Gunnewiek PJA; Department of Microbial Ecology, Netherlands Institute of Ecology, NIOO-KNAW, Wageningen, 6708 PB, The Netherlands., Clocchiatti A; Department of Microbial Ecology, Netherlands Institute of Ecology, NIOO-KNAW, Wageningen, 6708 PB, The Netherlands., Hundscheid MPJ; Department of Microbial Ecology, Netherlands Institute of Ecology, NIOO-KNAW, Wageningen, 6708 PB, The Netherlands., Wang X; CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China., de Boer W; Department of Microbial Ecology, Netherlands Institute of Ecology, NIOO-KNAW, Wageningen, 6708 PB, The Netherlands.; Soil Biology Group, Wageningen University, Wageningen, 6708 PB, The Netherlands.
Jazyk: angličtina
Zdroj: Environmental microbiology [Environ Microbiol] 2020 Mar; Vol. 22 (3), pp. 1025-1035. Date of Electronic Publication: 2019 Nov 04.
DOI: 10.1111/1462-2920.14808
Abstrakt: Competition is a major type of interaction between fungi and bacteria in soil and is also an important factor in suppression of plant diseases caused by soil-borne fungal pathogens. There is increasing attention for the possible role of volatiles in competitive interactions between bacteria and fungi. However, knowledge on the actual role of bacterial volatiles in interactions with fungi within soil microbial communities is lacking. Here, we examined colonization of sterile agricultural soils by fungi and bacteria from non-sterile soil inoculums during exposure to volatiles emitted by soil-derived bacterial communities. We found that colonization of soil by fungi was negatively affected by exposure to volatiles emitted by bacterial communities whereas that of bacteria was barely changed. Furthermore, there were strong effects of bacterial community volatiles on the assembly of fungal soil colonizers. Identification of volatile composition produced by bacterial communities revealed several compounds with known fungistatic activity. Our results are the first to reveal a collective volatile-mediated antagonism of soil bacteria against fungi. Given the better exploration abilities of filamentous fungi in unsaturated soils, this may be an important strategy for bacteria to defend occupied nutrient patches against invading fungi. Another implication of our research is that bacterial volatiles in soil atmospheres can have a major contribution to soil fungistasis.
(© 2019 The Authors. Environmental Microbiology published by Society for Applied Microbiology and John Wiley & Sons Ltd.)
Databáze: MEDLINE
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