title: Induced resistance in Solanum lycopersicum by algal elicitor extracted from Sargassum fusiforme.
abstract: Tomato (Solanum lycopersicum) production relies heavily on the use of chemical pesticides, which is undesired by health- and environment-concerned consumers. Environment-friendly methods of controlling tomato diseases include agroecological practices, organic fungicides, and biological control. Plants' resistance against pathogens is induced by applying agents called elicitors to the plants and would lead to disease prevention or reduced severity. We investigated the ability of a novel elicitor extracted from the brown sea algae (Sargassum fusiforme) to elicit induced resistance in tomato. The studied elicitor induced hypersensitive cell death and O2 (-) production in tomato tissues. It significantly reduced severities of late blight, grey mold, and powdery mildew of tomato. Taken together, our novel elicitor has not shown any direct antifungal activity against the studied pathogens, concluding that it is an elicitor of induced resistance.
authors: Plant Pathology Laboratory, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa-ku, Nagoya 464-8601, Japan.
authors: Layth
authors: L
authors: Sbaihat
authors: Plant Disease and Insect Control Group, Aichi Agricultural Research Center, Yazakosagamine, Nagakute 480-1103, Japan.
authors: Keiko
authors: K
authors: Takeyama
authors: Research and Development Group, Ohta Oil Mill Co., Fukuoka-cho, Okazaki 444-0825, Japan.
authors: Takeharu
authors: T
authors: Koga
authors: Plant Pathology Laboratory, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa-ku, Nagoya 464-8601, Japan.
authors: Daigo
authors: D
authors: Takemoto
authors: Plant Pathology Laboratory, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa-ku, Nagoya 464-8601, Japan.
authors: Kazuhito
authors: K
authors: Kawakita
mesh_terms: D000935:Antifungal Agents / Q000302:isolation & purification / Q000494:pharmacology; D001203:Ascomycota / Q000187:drug effects / Q000472:pathogenicity; D061046:Biological Control Agents / Q000302:isolation & purification / Q000494:pharmacology*; D018551:Solanum lycopersicum / Q000187:drug effects / Q000382:microbiology* / Q000502:physiology; D010935:Plant Diseases / Q000382:microbiology / Q000517:prevention & control*; D057865:Plant Immunity / Q000187:drug effects; D017382:Reactive Oxygen Species / Q000378:metabolism; D044647:Sargassum / Q000737:chemistry*
chemical_list: D000935:Antifungal Agents; D061046:Biological Control Agents; D017382:Reactive Oxygen Species