The symbiotic bacteria Alcaligenes faecalis of the entomopathogenic nematodes Oscheius spp. exhibit potential biocontrol of plant- and entomopathogenic fungi
Autor: | Minggang Wang, Yang Li, Xinghui Gu, Shaojie Shan, Yaqi Fu, Sergio Rasmann, Bingjiao Sun, Wenwu Wang, Chunxu Song, Weibin Ruan |
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Přispěvatelé: | Molecular Genetics |
Jazyk: | angličtina |
Rok vydání: | 2019 |
Předmět: |
Antifungal Agents
VOLATILE COMPOUNDS RHABDITIDAE Biological pest control Beauveria bassiana Bioengineering Microbial Sensitivity Tests Biology SALT TOLERANCE Applied Microbiology and Biotechnology Biochemistry 03 medical and health sciences ROOT Botany Antibiosis Animals Pest Control Biological Research Articles N.-SP NEMATODA DIMETHYL DISULFIDE 030304 developmental biology 0303 health sciences Alcaligenes faecalis 030306 microbiology Host (biology) BEAUVERIA-BASSIANA Fungi biology.organism_classification STEINERNEMA-CARPOCAPSAE ARABIDOPSIS-THALIANA Energy source Rhabditoidea Bacteria PATHOGENICITY Biotechnology Symbiotic bacteria Research Article |
Zdroj: | Microbial Biotechnology, 12(3), 459-471. Wiley Microbial Biotechnology |
ISSN: | 1751-7915 |
Popis: | Summary Soil‐dwelling entomopathogenic nematodes (EPNs) kill arthropod hosts by injecting their symbiotic bacteria into the host hemolymph and feed on the bacteria and the tissue of the dying host for several generations cycles until the arthropod cadaver is completely depleted. The EPN–bacteria–arthropod cadaver complex represents a rich energy source for the surrounding opportunistic soil fungal biota and other competitors. We hypothesized that EPNs need to protect their food source until depletion and that the EPN symbiotic bacteria produce volatile and non‐volatile exudations that deter different soil fungal groups in the soil. We isolated the symbiotic bacteria species (Alcaligenes faecalis) from the EPN Oscheius spp. and ran infectivity bioassays against entomopathogenic fungi (EPF) as well as against plant pathogenic fungi (PPF). We found that both volatile and non‐volatile symbiotic bacterial exudations had negative effects on both EPF and PPF. Such deterrent function on functionally different fungal strains suggests a common mode of action of A. faecalis bacterial exudates, which has the potential to influence the structure of soil microbial communities, and could be integrated into pest management programs for increasing crop protection against fungal pathogens. |
Databáze: | OpenAIRE |
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