[20p-A106-2~13] 8.4 Plasma life sciences

△ [20p-A106-5] Evaluation of growth-promoting products of oxygen-radical-treated L-tryptophan solutions

〇Shota Araki¹, Tomomichi Ota¹, Hironaka Tsukagoshi¹, Naoyuki Iwata², Masaru Hori², Masafumi Ito¹ (1.Meijo Univ., 2.Nagoya Univ.)

Keywords:plasmabio, plasma, agriculture

We evaluated plant-growth-promoting effects of oxygen-radical-treated l-tryptophan (l-Trp) solutions on Arabidopsis thaliana. A maximum promoting effect was obtained with a l-Trp concentration of 5 μM. Moreover, high-performance liquid chromatography analysis was used to fractionate components in treated l-Trp. As a result, hydrophilic derivatives of l-Trp produced by oxygen-radical treatment was suggested to be a growth-promoting substance.