scholarly journals Influence of Speciation of Thorium on Toxic Effects to Green Algae Chlorella pyrenoidosa

2017 ◽  
Vol 18 (4) ◽  
pp. 795 ◽  
Author(s):  
Can Peng ◽  
Yuhui Ma ◽  
Yayun Ding ◽  
Xiao He ◽  
Peng Zhang ◽  
...  
Keyword(s):  
Green Algae ◽  
Chlorella Pyrenoidosa ◽  
Toxic Effects

Direct and indirect toxic effects of cotton-derived cellulose nanofibres on filamentous green algae

2015 ◽  
Vol 122 ◽  
pp. 399-405 ◽  
Author(s):  
Michele Munk ◽  
Humberto M. Brandão ◽  
Sophie Nowak ◽  
Ludovic Mouton ◽  
Juliana C. Gern ◽  
...  
Keyword(s):  
Green Algae ◽  
Toxic Effects ◽  
Filamentous Green Algae ◽  
Cellulose Nanofibres

scholarly journals Biosynthesis of phytoquinones. Homogentisic acid: a precursor of plastoquinones, tocopherols and α-tocopherolquinone in higher plants, green algae and blue–green algae

1970 ◽  
Vol 117 (3) ◽  
pp. 593-600 ◽  
Author(s):  
G. R. Whistance ◽  
D. R. Threlfall
Keyword(s):  
Green Algae ◽  
Phenylacetic Acid ◽  
Higher Plants ◽  
Chlorella Pyrenoidosa ◽  
Homogentisic Acid ◽  
Side Chain ◽  
Methyl Groups ◽  
Blue Green Algae ◽  
Hydroxyphenylacetic Acid ◽  
Tracer Experiments

1. By means of 14C tracer experiments and isotope competition experiments the roles of d-tyrosine, p-hydroxyphenylpyruvic acid, p-hydroxyphenylacetic acid, phenylacetic acid, homogentisic acid and homoarbutin (2-methylquinol 4-β-d-glucoside) in the biosynthesis of plastoquinones, tocopherols and α-tocopherolquinone by maize shoots was investigated. It was established that d-tyrosine, p-hydroxyphenylpyruvic acid and homogentisic acid can all be utilized for this purpose, whereas p-hydroxyphenylacetic acid, phenylacetic acid and homoarbutin cannot. Studies on the mode of incorporation of d-tyrosine, p-hydroxyphenylpyruvic acid and homogentisic acid showed that their nuclear carbon atoms and the side-chain carbon atom adjacent to the nucleus give rise (as a C6-C1 unit) to the p-benzoquinone rings and nuclear methyl groups (one in each case) of plastoquinone-9 and α-tocopherolquinone and the aromatic nuclei and nuclear methyl groups (one in each case) of γ-tocopherol and α-tocopherol. 2. By using [14C]-homogentisic acid it has been shown that homogentisic acid is also a precursor of plastoquinone, tocopherols and α-tocopherolquinone in the higher plants Lactuca sativa and Rumex sanguineus, the green algae Chlorella pyrenoidosa and Euglena gracilis and the blue–green alga Anacystis nidulans.

scholarly journals Increase in the biomass of some green algae species in nitrate and ammonium mediums depending on auto-, mixo- or heterotrophic conditions

2014 ◽  
Vol 54 (1) ◽  
pp. 65-76 ◽  
Author(s):  
Stefan Gumiński ◽  
Krystyna Jurajda ◽  
Ewa Tatkowska
Keyword(s):  
Protein Content ◽  
Green Algae ◽  
Chlorella Pyrenoidosa ◽  
Dry Mass ◽  
Scenedesmus Quadricauda ◽  
Individual Species ◽  
Content Increase ◽  
Nitrate Medium ◽  
The Individual ◽  
Mixotrophic Conditions

The increase in total dry mass and protein in cultures of <em>Chlorella pyrenoidosa, Scenedesmus quadricauda</em> and <em>Ankistrodesmus acicularis</em> was studied. Under autotrophic conditions, increases in dry mass were, as a rule, larger in the nitrate medium than in the ammonium one, under mixotrophic conditions the situation was reversed and in the case of heterotrophy, the individual species reacted differently. The dependence ot the protein content increase on the nitrate or ammonium form of the medium was not clear. Changes in time of the pH and rH of the mediums were followed and the interdependence of these changes with the production of biomass is discussed.

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