Nitrate and nitrite as ?in vivo? quenchers of chlorophyll fluorescence in blue-green algae

1981 ◽  
Vol 2 (3) ◽  
pp. 175-184 ◽  
Author(s):  
A. Serrano ◽  
J. Rivas ◽  
M. Losada
Keyword(s):  
Chlorophyll Fluorescence ◽  
Green Algae ◽  
Blue Green Algae ◽  
Nitrate And Nitrite

scholarly journals Action Spectra for Nitrate and Nitrite Assimilation in Blue-Green Algae

1988 ◽  
Vol 86 (4) ◽  
pp. 1116-1119 ◽  
Author(s):  
Aurelio Serrano ◽  
Manuel Losada
Keyword(s):  
Green Algae ◽  
Blue Green Algae ◽  
Action Spectra ◽  
Nitrate And Nitrite

Physiological Characterization of Cyanophora paradoxa, a Flagellate Containing Cyanelles in Endosymbiosis

1978 ◽  
Vol 33 (11-12) ◽  
pp. 981-987 ◽  
Author(s):  
Hermann Bothe ◽  
Liliane Floener
Keyword(s):  
Green Algae ◽  
Generation Time ◽  
Culture Conditions ◽  
Nitrite Reduction ◽  
Cyanophora Paradoxa ◽  
Blue Green Algae ◽  
Carbon And Nitrogen ◽  
Physiological Characterization ◽  
Nitrate And Nitrite

Culture conditions are described under which Cyanophora paradoxa grows with a generation time of less than two days. The organism is an obligate photoautotrophic flagellate unable to degrade exogenous carbohydrates via respiration. It does not synthesize nitrogenase but can form a hydrogenase with similar properties as in blue-green algae. The photosynthetic O2-evolution pro­ceeds with essentially the same rate as in green or blue-green algae. Besides CO2, p-benzochinon, nitrate and nitrite also stimulate the photosynthetic O2-evolution. Nitrite reduction is strictly light- dependent where the stoicheiometry between nitrite-disappearance and photosynthetic O2-evolution is 1:1.5. It is concluded that the cyanelles supply the eucaryotic host both with carbon and nitrogen compounds.

scholarly journals Antiviral lectins from red and blue-green algae show potent in vitro and in vivo activity against Hepatitis C virus

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
Y Takebe ◽  
CJ Saucedo ◽  
G Lund ◽  
R Uenishi ◽  
S Hase ◽  
...  
Keyword(s):  
Hepatitis C Virus ◽  
Hepatitis C ◽  
Green Algae ◽  
Blue Green Algae

scholarly journals Antiviral Lectins from Red and Blue-Green Algae Show Potent In Vitro and In Vivo Activity against Hepatitis C Virus

PLoS ONE ◽  
2013 ◽  
Vol 8 (5) ◽  
pp. e64449 ◽  
Author(s):  
Yutaka Takebe ◽  
Carrie J. Saucedo ◽  
Garry Lund ◽  
Rie Uenishi ◽  
Saiki Hase ◽  
...  
Keyword(s):  
Hepatitis C Virus ◽  
Hepatitis C ◽  
Green Algae ◽  
Blue Green Algae

Water-network percolation transition in hydrated blue-green algae in vivo

2007 ◽  
Vol 353 (47-51) ◽  
pp. 4541-4545 ◽  
Author(s):  
D. Sokolowska ◽  
A. Krol-Otwinowska ◽  
M. Bialecka ◽  
L. Fiedor ◽  
M. Szczygiel ◽  
...  
Keyword(s):  
Green Algae ◽  
Percolation Transition ◽  
Water Network ◽  
Blue Green Algae

scholarly journals In vitro and in vivo safety assessment of edible blue-green algae, Nostoc commune var. sphaeroides Kützing and Spirulina plantensis

2011 ◽  
Vol 49 (7) ◽  
pp. 1560-1564 ◽  
Author(s):  
Yue Yang ◽  
Youngki Park ◽  
David A. Cassada ◽  
Daniel D. Snow ◽  
Douglas G. Rogers ◽  
...  
Keyword(s):  
Green Algae ◽  
Safety Assessment ◽  
Nostoc Commune ◽  
Blue Green Algae

Research of microcystins as inhibitors of Phytophthora infestans development

2021 ◽  
Author(s):  
V. V. Nykyforov ◽  
◽  
О.V. Novokhatko ◽  
O.V. Maznitska ◽  
О.А. Sakun ◽  
...  
Keyword(s):  
Late Blight ◽  
Phytophthora Infestans ◽  
Green Algae ◽  
Field Experiments ◽  
Model Organisms ◽  
Time Interval ◽  
Complete Disappearance ◽  
Blue Green Algae

Information from foreign literary sources regarding microcystins of blue-green algae is presented. The current state of the problem of reservoirs «blooming» and the significance of this phenomenon for humans are reflected. The research was carried out in two stages: laboratory and full-scale. A pure culture of Phytophthora infestans was isolated, on which further studies were carried out. Isolation of isolates was carried out on agar nutrient medium. Potassium permanganate and ethanol were selected from the available antiseptics. Field experiments were carried out on experimental lines of Solanum lycopersicum by diagnosing signs of late blight disease. The determination of the potential negative effect of tomato plants treated with a suspension of cyanobacteria was carried out by the method of biotesting using Achatina fulica as a test object. The effect of blue-green algae toxins – microcystins – on colonies Ph. infestans in vitro is described. Photometric observation of the decrease in the number of colonies with a time interval of three days is presented. The phytophtorostatic effect of microcystins has been established. Degradation of Ph. infestans the next day were fixed after treatment of the colony with a suspension of cyanobacteria. An inhibitory effect was revealed, almost to the complete disappearance of symptoms in plants partially affected by late blight and grown in vivo. It has been determined that plants treated with microcystin can be considered safe for further consumption; the death of model organisms has not been registered.

Freeze-Fracture Replication in the Ultrastructure of Blue-Green Algae

1967 ◽  
Vol 25 ◽  
pp. 74-75
Author(s):  
L. V. Leak
Keyword(s):  
Cell Wall ◽  
Electron Microscope ◽  
Green Algae ◽  
Three Dimensional ◽  
Freeze Fracture ◽  
Electron Microscopic ◽  
Photosynthetic Membranes ◽  
Blue Green Algae ◽  
Cell Biol ◽  
Cellular Components

Electron microscopic observations of freeze-fracture replicas of Anabaena cells obtained by the procedures described by Bullivant and Ames (J. Cell Biol., 1966) indicate that the frozen cells are fractured in many different planes. This fracturing or cleaving along various planes allows one to gain a three dimensional relation of the cellular components as a result of such a manipulation. When replicas that are obtained by the freeze-fracture method are observed in the electron microscope, cross fractures of the cell wall and membranes that comprise the photosynthetic lamellae are apparent as demonstrated in Figures 1 & 2.A large portion of the Anabaena cell is composed of undulating layers of cytoplasm that are bounded by unit membranes that comprise the photosynthetic membranes. The adjoining layers of cytoplasm are closely apposed to each other to form the photosynthetic lamellae. Occassionally the adjacent layers of cytoplasm are separated by an interspace that may vary in widths of up to several 100 mu to form intralamellar vesicles.

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