ANTIFUNGAL ACTIVITY AGAINST ARALIAE CONTINENTALIS RADIX EXTRACT ON RICE SHEATH BLIGHT

Tae-Seok Oh; Youn-Jin Park; Chang-Ho Kim; Yong-Koo Cho; Ki-sung Kwon; Tae-Kwon Kim; Myoung-Jun Jang

doi:10.9755/ejfa.2015-12-1077

Authors

Tae-Seok Oh Department of Plant Resources, Kongju National University, College of Industrial Sciences, Yesan, Republic of Korea, South Korea
Youn-Jin Park Department of Plant Resources, Kongju National University, College of Industrial Sciences, Yesan, Republic of Korea, South Korea
Chang-Ho Kim Department of Plant Resources, Kongju National University, College of Industrial Sciences, Yesan, Republic of Korea, South Korea
Yong-Koo Cho Department of Plant Resources, Kongju National University, College of Industrial Sciences, Yesan, Republic of Korea, South Korea
Ki-sung Kwon Department of Plant Resources, Kongju National University, College of Industrial Sciences, Yesan, Republic of Korea, South Korea
Tae-Kwon Kim Department of Plant Resources, Kongju National University, College of Industrial Sciences, Yesan, Republic of Korea, South Korea
Myoung-Jun Jang Department of Plant Resources, Kongju National University, College of Industrial Sciences, Yesan, Republic of Korea, South Korea

DOI:

https://doi.org/10.9755/ejfa.2015-12-1077

Keywords:

Antifungal activity, Pesticide, Aralia Continentalis Radix, Antifungal agent, Natural substance

Abstract

Rice sheath blight is caused by Rhizoctonia solan, a plant pathogenic fungus that is spread by insect pests as well as splashing rain and
plant contact, causing the most serious damage globally with the second largest cost for antifungal control. The Aralia Continentalis Radix
extract has an antifungal activity against Rhizoctonia solan, and it was presumed that the ent-Pimara-8(14), 15-diene-19-oic acid contained
in Aralia Continentalis Radix is the chemical constituent of the antifungal metabolite. It was confirmed that the Aralia Continentalis Radix
extract can be used as a control agent against rice sheath blight. The damage caused by rice sheath blight was decreased to less than
16% when the Aralia Continentalis Radix extract (125 mg.L-1 or more) was sprayed onto rice plants in a disaster prevention experiment
in a field afflicted by rice sheath blight.