201. Chemical compounds from Dictyostelium discoideum repel a plant-parasitic nematode and can protect roots
- Author
-
Yumiko F. Saito, Yukiko Nagamatsu, Tamao Saito, Derek Bartlem, and Saki H. Miyazaki
- Subjects
0301 basic medicine ,Dictyosteliomycota ,lcsh:Medicine ,Plant Science ,Plant Roots ,Dictyostelium discoideum ,Dictyostelium Growth and Development ,Filter Paper ,Microbial Physiology ,Medicine and Health Sciences ,Dictyostelium ,Nematode Infections ,lcsh:Science ,Soil Microbiology ,Rhizosphere ,Dictyostelium Slug ,Multidisciplinary ,Antiparasitic Agents ,biology ,Dictyostelium Discoideum ,Microbial Growth and Development ,Eukaryota ,food and beverages ,Protists ,Soil Ecology ,Laboratory Equipment ,Chemistry ,Sympatry ,Experimental Organism Systems ,Slime Molds ,Close relationship ,Physical Sciences ,Engineering and Technology ,Soil microbiology ,Research Article ,Equipment ,Soil Science ,Research and Analysis Methods ,Microbiology ,03 medical and health sciences ,Model Organisms ,Botany ,Parasitic Diseases ,Slime mold ,Animals ,Fruiting Bodies, Fungal ,Tylenchoidea ,Plant Diseases ,Protozoan Models ,Ecology and Environmental Sciences ,fungi ,lcsh:R ,Organisms ,Chemical Compounds ,Biology and Life Sciences ,Interspecific competition ,Plant Pathology ,biology.organism_classification ,030104 developmental biology ,Nematode ,Lotus ,lcsh:Q ,Developmental Biology - Abstract
Slime mold species in the genus Dictyostelium are considered to have a close relationship with non-parasitic nematodes; they are sympatric in soils and can exhibit interspecific competition for food. We investigated whether this relationship extends to a plant-parasitic nematode that is active in the rhizosphere and has broad host specificity, damaging crops worldwide. Using a novel assay to examine the interaction between the cellular slime mold, Dictyostelium discoideum, and the plant-parasitic nematodes, Meloidogyne spp., we found that cellular slime molds can repel plant parasitic nematodes. Specifically, the repulsion activity was in response to chemical compounds released by cellular slime mold fruiting bodies. Under laboratory conditions, these soluble chemical extracts from fruiting bodies of D. discoideum showed repulsion activity strong enough to protect plant roots. The fruiting body cell extracts repelled but were not toxic to the plant-parasitic nematodes.
- Published
- 2018