We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Growth Inhibitors of Lettuce Seedlings From Bacillus cereus EJ-121.
- Authors
Lam Hoang; Gil-Jae Joo; Won-Chan Kim; So-Young Jeon; Sun-Ha Choi; Joung-Woong Kim; In-Koo Rhee; Jong-Moon Hur; Kyung-Sik Song
- Abstract
The ethyl acetate extract of the Bacillus sp. EJ-121 culture broth exhibited growth inhibitory activity on a lettuce (Lactuca sativa L.) seedlings assay. Bacillus sp. EJ-121 was identified as Bacillus cereus by the morphological characteristic and nucleotide sequence of the 16S rDNA. The bioassay-guided fractionation of the ethyl acetate extract led to the isolation of two compounds. Their structures were deduced by spectroscopic methods and determined as sodium vanillate (1) and 2-aminobenzoic acid (2). Both compounds 1 and 2 inhibited more than 90% of root length at 50 ppm (0.26 and 0.36 mM, respectively) while they had a limited effect on shoot growth at the same concentration level. Roots and shoots of lettuce seedlings showed severe deterioration at 100 ppm. In order to study the fundamental structure–activity relationship, several structurally related benzoic acid derivatives were also assayed. The existence of a polar carboxyl moiety seemed to be responsible for the stronger activity.
- Publication
Plant Growth Regulation, 2005, Vol 47, Issue 2/3, p149
- ISSN
0167-6903
- Publication type
Article
- DOI
10.1007/s10725-005-3217-3