Antifungal and sprout regulatory bioactivities of phenylacetic acid, indole-3-acetic acid, and tyrosol isolated from the potato dry rot suppressive bacterium Enterobacter cloacae S11:T:07

2004 ◽  
Vol 31 (11) ◽  
pp. 517-524 ◽  
Author(s):  
P. J. Slininger ◽  
K. D. Burkhead ◽  
D. A. Schisler
1974 ◽  
Vol 31 (3) ◽  
pp. 357-365 ◽  
Author(s):  
S. Kristensen

1. Ruminal metabolism of labelled phenylacetic acid, 4-hydroxyphenylacetic acid, indole-3-acetic acid, glucose, shikimic acid, phenol, and serine was studied in vitro by short-term incubation with special reference to incorporation rates into aromatic amino acids.2. Earlier reports on reductive carboxylation of phenylacetic acid and indole-3-acetic acid in the rumen were confirmed and the formation of tyrosine from 4-hydroxyphenylacetic acid was demonstrated for the first time.3. The amount of phenylalanine synthesized from phenylacetic acid was estimated to be 2 mg/1 rumen contents per 24 h, whereas the amount synthesized from glucose might be eight times as great, depending on diet.4. Shikimic acid was a poor precursor of the aromatic amino acids, presumably owing to its slow entry into rumen bacteria.5. A slow conversion of phenol into tyrosine was observed.


2020 ◽  
Vol 532 (2) ◽  
pp. 244-250
Author(s):  
Yuki Aoi ◽  
Hayao Hira ◽  
Yuya Hayakawa ◽  
Hongquan Liu ◽  
Kosuke Fukui ◽  
...  

2015 ◽  
Vol 56 (8) ◽  
pp. 1641-1654 ◽  
Author(s):  
Satoko Sugawara ◽  
Kiyoshi Mashiguchi ◽  
Keita Tanaka ◽  
Shojiro Hishiyama ◽  
Tatsuya Sakai ◽  
...  

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Mengcen Wang ◽  
Seiji Tachibana ◽  
Yuta Murai ◽  
Li Li ◽  
Sharon Yu Ling Lau ◽  
...  

Abstract Burkholderia heleia PAK1-2 is a potent biocontrol agent isolated from rice rhizosphere, as it prevents bacterial rice seedling blight disease caused by Burkholderia plantarii. Here, we isolated a non-antibacterial metabolite from the culture fluid of B. heleia PAK1-2 that was able to suppress B. plantarii virulence and subsequently identified as indole-3-acetic acid (IAA). IAA suppressed the production of tropolone in B. plantarii in a dose-dependent manner without any antibacterial and quorum quenching activity, suggesting that IAA inhibited steps of tropolone biosynthesis. Consistent with this, supplementing cultures of B. plantarii with either L-[ring-2H5]phenylalanine or [ring-2H2~5]phenylacetic acid revealed that phenylacetic acid (PAA), which is the dominant metabolite during the early growth stage, is a direct precursor of tropolone. Exposure of B. plantarii to IAA suppressed production of both PAA and tropolone. These data particularly showed that IAA produced by B. heleia PAK1-2 disrupts tropolone production during bioconversion of PAA to tropolone via the ring-rearrangement on the phenyl group of the precursor to attenuate the virulence of B. plantarii. B. heleia PAK1-2 is thus likely a microbial community coordinating bacterium in rhizosphere ecosystems, which never eliminates phytopathogens but only represses production of phytotoxins or bacteriocidal substances.


Sign in / Sign up

Export Citation Format

Share Document