scholarly journals d ‐Lactic acid secreted by Chlorella fusca primes pattern‐triggered immunity against Pseudomonas syringae in Arabidopsis

2020 ◽  
Vol 102 (4) ◽  
pp. 761-778 ◽  
Author(s):  
Sang‐Moo Lee ◽  
Seon‐Kyu Kim ◽  
Nakyeong Lee ◽  
Chi‐Yong Ahn ◽  
Choong‐Min Ryu
Keyword(s):  
Lactic Acid ◽  
Pseudomonas Syringae ◽  
Chlorella Fusca

scholarly journals Determination of minimum inhibitory concentrations of lactic acid bacteria and other antagonist microorganisms

2021 ◽  
Vol 291 ◽  
pp. 02006
Author(s):  
Svetlana Noskova ◽  
Stanislav Sukhikh ◽  
Olga Babich ◽  
Olga Bulgakova
Keyword(s):  
Escherichia Coli ◽  
Lactic Acid ◽  
Minimum Inhibitory Concentration ◽  
Lactic Acid Bacteria ◽  
Pseudomonas Syringae ◽  
Inhibitory Concentration ◽  
Inhibitory Effect ◽  
Acetobacter Aceti ◽  
Minimum Concentration ◽  
Minimum Inhibitory Concentrations

Minimum inhibitory concentrations of lactic acid bacteria and other antagonist microorganisms isolated from natural sources of Kaliningrad region (soil, water bodies, plant objects) were determined. It was shown that the minimum inhibitory concentration of Pediococcus pentosaceus metabolites against Escherichia coli is 1.5·107 CFU/ml; Pseudomonas chlororaphis metabolites have no inhibitory effect against the test strain of Escherichia coli under study. It was found that Pediococcus damnosus metabolites adversely affect the growth of Escherichia coli, but at a concentration of 1.5·107 CFU/ml after 6-24 hours of cultivation. For metabolites isolated by Lactobacillus casei, the characteristic minimum inhibitory concentration with respect to the studied Escherichia coli strain is 1.5-107 CFU/ml, and for metabolites isolated by Lactobacillus fermentum, the minimum inhibitory concentration with respect to the studied Escherichia coli strain is 1.5·105 CFU/ml. At a concentration of Bacteroides hypermegas (Megamonas hypermegale) metabolites equal to 1.5·106 CFU/ml, an optical density lower than that of the control is observed. The minimum concentration of Pseudomonas syringae metabolites inhibiting Escherichia coli culture growth is 1.5-107 CFU/ml. For the metabolites Acetobacter aceti and Psychrobacter urativorans, the concentration of 1.5·107 CFU/ml is the lowest to inhibit the growth of Escherichia coli.

Demonstration of Retinal Glycogen with Silver Methenamine

1971 ◽  
Vol 29 ◽  
pp. 564-565
Author(s):  
A. W. Sedar ◽  
G. H. Bresnick
Keyword(s):  
Lactic Acid ◽  
Chromic Acid ◽  
Periodic Acid ◽  
Müller Cell ◽  
External Limiting Membrane ◽  
Electron Microscope Level ◽  
Reactive Process ◽  
Inner Limiting Membrane ◽  
Muller Cell ◽  
And Migration

After experimetnal damage to the retina with a variety of procedures Müller cell hypertrophy and migration occurs. According to Kuwabara and others the reactive process in these injuries is evidenced by a marked increase in amount of glycogen in the Müller cells. These cells were considered originally supporting elements with fiber processes extending throughout the retina from inner limiting membrane to external limiting membrane, but are known now to have high lactic acid dehydrogenase activity and the ability to synthesize glycogen. Since the periodic acid-chromic acid-silver methenamine technique was shown to demonstrate glycogen at the electron microscope level, it was selected to react with glycogen in the fine processes of the Müller cell that ramify among the neural elements in various layers of the retina and demarcate these cells cytologically. The Rhesus monkey was chosen as an example of a well vascularized retina and the rabbit as an example of a avascular retina to explore the possibilities of the technique.

Effects of the pseudomonad phytotoxin coronatine on tomato leaf structure and ultrastructure

1995 ◽  
Vol 53 ◽  
pp. 862-863
Author(s):  
D.A. Palmer ◽  
C.L. Bender
Keyword(s):  
Pseudomonas Syringae ◽  
Membrane Integrity ◽  
Leaf Tissue ◽  
Cell Number ◽  
Cell Ultrastructure ◽  
Response To Treatment ◽  
Prominent Symptom ◽  
Chlorophylls A And B ◽  
Cell Dimensions ◽  
Structure And Ultrastructure

Coronatine is a non-host-specific phytotoxin produced by several members of the Pseudomonas syringae group of pathovars. The toxin acts as a virulence factor in P. syringae pv. tomato, allowing the organism to multiply to a higher population density and develop larger lesions than mutant strains unable to produce the toxin. The most prominent symptom observed in leaf tissue treated with coronatine is an intense spreading chlorosis; this has been attributed to a loss of chlorophylls a and b in tobacco. Coronatine's effects on membrane integrity and cell ultrastructure have not been previously investigated. The present study describes changes in tomato leaves in response to treatment with purified coronatine, infection by a coronatine-producing strain of P. syringae pv. tomato, and infection by a cor" mutant.In contrast to H2O-treated tissue, coronatine-treated tissue showed a diffuse chlorosis extending approximately 5 mm from the inoculation site. Leaf thickness, cell number, and cell dimensions were similar for both healthy and coronatine-treated, chlorotic tissue; however, the epidermal cell walls were consistently thicker in coronatine-treated leaves (Figs, la and lb).

Factors affecting the ability of dental cements to alter the pH of lactic acid solutions

2000 ◽  
Vol 27 (12) ◽  
pp. 1030-1033 ◽  
Author(s):  
M. Patel ◽  
H. Tawfik ◽  
Y. Myint ◽  
D. Brocklehurst ◽  
J. W. Nicholson
Keyword(s):  
Lactic Acid ◽  
Acid Solutions ◽  
Factors Affecting

Poly-L-Lactic Acid Fillers: Tips for Optimizing Use

2007 ◽  
Vol 38 (8) ◽  
pp. 28
Author(s):  
DAMIAN MCNAMARA
Keyword(s):  
Lactic Acid

Lactic acid bacteria and yeasts in kefir grains and kefir made from them

2002 ◽  
Vol 28 (1) ◽  
pp. 1-6 ◽  
Author(s):  
E Simova ◽  
D Beshkova ◽  
A Angelov ◽  
Ts Hristozova ◽  
G Frengova ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Kefir Grains

Conversion of hydrophilic constituents from Mercurialis perennis L. by lactic acid fermentation

Planta Medica ◽  
2010 ◽  
Vol 76 (12) ◽  
Author(s):  
P Lorenz ◽  
S Duckstein ◽  
J Bertrams ◽  
U Meyer ◽  
F Stintzing
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Fermentation ◽  
Acid Fermentation
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