scholarly journals Cyanobacterial Growth Inhibition Effects of Fatty Acids Released from Myriophyllum spicatum

2004 ◽  
Vol 27 (2) ◽  
pp. 125-130 ◽  
Author(s):  
Satoshi NAKAI ◽  
Shingo YAMADA ◽  
Masaaki HOSOMI
Keyword(s):  
Fatty Acids ◽  
Growth Inhibition ◽  
Myriophyllum Spicatum

Growth inhibition ofMonodus subterraneusby free fatty acids

2008 ◽  
Vol 101 (5) ◽  
pp. 1108-1114 ◽  
Author(s):  
R. Bosma ◽  
K. Miazek ◽  
S.M. Willemsen ◽  
M.H. Vermuë ◽  
R.H. Wijffels
Keyword(s):  
Fatty Acids ◽  
Growth Inhibition ◽  
Free Fatty Acids

The adaptation responses of bacterial cytoplasmic membrane fluidity in the presence of environmental stress factors — polychlorinated biphenyls and 3-chlorobenzoic acid

Biologia ◽  
2014 ◽  
Vol 69 (4) ◽  
Author(s):  
Slavomíra Murínová ◽  
Katarína Dercová ◽  
Milan Čertík ◽  
Katarína Lászlová
Keyword(s):  
Fatty Acids ◽  
Polychlorinated Biphenyls ◽  
Growth Inhibition ◽  
Cytoplasmic Membrane ◽  
Degradation Products ◽  
Stress Factors ◽  
Membrane Phospholipid ◽  
Lag Phase ◽  
Stationary Growth ◽  
Chlorobenzoic Acid

AbstractOnly bacteria sufficiently resistant to the toxic compounds in their environment can be used for the efficient biodegradation process in order to eliminate a widespread contamination by polychlorinated biphenyls (PCBs). The presence of PCBs results in bacterial controlled rigidification of cytoplasmic membrane. The four bacterial isolates from long-term PCB-contaminated soil (Alcaligenes xylosoxidans, Pseudomonas stutzeri) and sediment (Ochrobactrum anthropi, Pseudomonas veronii) have been used to select the strain most adapted to the PCBs, i.e. with efficient changes in the membrane phospholipid fatty acids. PCBs and their toxic degradation products — the 3-chlorobenzoic acids (3-CBA as the most toxic one) — were added separately to the liquid medium with glucose in two experimental sets: at lag phase and in stationary phase of bacterial growth in order to evaluate the effects of chemicals to cytoplasmic membrane. The main parameter — the changes in fatty acids composition (in the total lipids and the main membrane phospholipid phosphatidyletanolamine) were studied. 3-CBA caused growth inhibition when added at lag phase. However, when added during the stationary growth, inhibition was not observed. Similarly, after addition of PCBs to the stationary growth culture, inhibition of growth was not observed with all tested strains (except for P. stutzeri). This fact indicates the importance of time contact of bacteria during growth phase with xenobiotics. O. anthropi and A. xylosoxidans appeared to be the most adapted to the presence of PCBs (with sufficient membrane adaptation), active under the adverse conditions, and able to survive in the contaminated environment.

Polyphenols and fatty acids responsible for anti-cyanobacterial allelopathic effects of submerged macrophyte Myriophyllum spicatum

2012 ◽  
Vol 66 (5) ◽  
pp. 993-999 ◽  
Author(s):  
S. Nakai ◽  
G. Zou ◽  
T. Okuda ◽  
W. Nishijima ◽  
M. Hosomi ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Culture System ◽  
Myriophyllum Spicatum ◽  
Inhibitory Effect ◽  
Fatty Acid Mixture ◽  
Acid Mixture ◽  
Allelopathic Effect ◽  
Release Rates ◽  
Allelopathic Effects

Myriophyllum spicatum is known to inhibit the growth of cyanobacteria such as Microcystis aeruginosa by releasing anti-cyanobacterial allelochemicals. The allelochemicals possibly responsible for the inhibition include five polyphenols and three fatty acids, but the extent to which these are indeed responsible for the anti-cyanobacterial effects is unclear. The goal of this research was to determine the contribution of these compounds to the allelopathic effect of M. spicatum on M. aeruginosa. We first collected information on the release rates of these compounds and then added the compounds to a cyanobacterial medium on the basis of their release rates so as to simulate their excretion by M. spicatum. Addition of the polyphenols and fatty acids inhibited the growth of M. aeruginosa, and the interaction of the polyphenols and fatty acids was additive. The EC50 of a polyphenol and fatty acid mixture was compared with that of M. spicatum itself as previously determined in a mixed culture system in which M. spicatum and M. aeruginosa were incubated. The former was about 1.9 times higher than that of the latter, the implication being that the inhibitory effect of the polyphenols and fatty acids contributed about 53% of the allelopathic effect of M. spicatum. This paper is the first to describe allelochemicals that account for a half of the anti-cyanobacterial allelopathic effect of a macrophyte.

Growth inhibition of Erwinia amylovora and related Erwinia species by neutralized short-chain fatty acids

2013 ◽  
Vol 195 (10-11) ◽  
pp. 759-764 ◽  
Author(s):  
Katrin Konecki ◽  
Marina Gernold ◽  
Annette Wensing ◽  
Klaus Geider
Keyword(s):  
Fatty Acids ◽  
Growth Inhibition ◽  
Erwinia Amylovora ◽  
Short Chain Fatty Acids ◽  
Short Chain ◽  
Erwinia Species ◽  
Chain Fatty Acids

Anti-cyanobacterial fatty acids released from Myriophyllum spicatum

Hydrobiologia ◽  
2005 ◽  
Vol 543 (1) ◽  
pp. 71-78 ◽  
Author(s):  
Satoshi Nakai ◽  
Shingo Yamada ◽  
Masaaki Hosomi
Keyword(s):  
Fatty Acids ◽  
Myriophyllum Spicatum
Sign in / Sign up

Export Citation Format

Share Document