期刊
PLANT PATHOLOGY JOURNAL
卷 26, 期 3, 页码 245-252出版社
KOREAN SOC PLANT PATHOLOGY
DOI: 10.5423/PPJ.2010.26.3.245
关键词
endophyte; phytotoxic; Arthrobacter humicola; 3-phenypropionic acid
资金
- Regional Strategic Industry Development [70001276]
- Ministry of Knowledge Economy, Korea
- Ministry of Education, Science and Technology, Korea [BK 21]
An endophytic bacterial strain, Arthrohacter humicola YC6002, was isolated from a surface sterilized root of Korean turf grass (Zoysia japonica) collected from Jinju, Korea. This strain showed inhibitory effect on germination and shoot growth of radish. The inhibition of germination and shoot growth of radish seeds varied depending on the age of culture and the temperature at which it was incubated. The culture filtrate of 1/10-strength Tryptic Soy Broth medium, incubated for 48 hours at 30 degrees C, showed the highest inhibitory effect on radish seed germination and shoot growth (92% inhibition as compared to control). The active compound with seed germination and shoot growth inhibition was purified and identified as 3-phenylpropionic acid. The purified compound had 53% and 93% inhibitory effect on seed germination and shoot growth of radish for 500 and 1000 ppm solutions, respectively.
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