scholarly journals Deciphering the relationship among phosphate dynamics, electron-dense body and lipid accumulation in the green alga Parachlorella kessleri

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Shuhei Ota ◽  
Mai Yoshihara ◽  
Tomokazu Yamazaki ◽  
Tsuyoshi Takeshita ◽  
Aiko Hirata ◽  
...  
Keyword(s):  
Green Alga ◽  
Lipid Accumulation ◽  
Dense Body ◽  
Parachlorella Kessleri ◽  
The Relationship

scholarly journals Effect of temperature, nitrate concentration, pH and bicarbonate addition on biomass and lipid accumulation in the sporulating green alga PW95

2021 ◽  
Vol 53 ◽  
pp. 102148
Author(s):  
L. Corredor ◽  
E.P. Barnhart ◽  
A.E. Parker ◽  
R. Gerlach ◽  
M.W. Fields
Keyword(s):  
Green Alga ◽  
Lipid Accumulation ◽  
Nitrate Concentration ◽  
Effect Of Temperature ◽  
Bicarbonate Addition

scholarly journals Physiological Changes of Parachlorella Kessleri TY02 in Lipid Accumulation under Nitrogen Stress

2019 ◽  
Vol 16 (7) ◽  
pp. 1188 ◽  
Author(s):  
Yifan Gao ◽  
Jia Feng ◽  
Junping Lv ◽  
Qi Liu ◽  
Fangru Nan ◽  
...  
Keyword(s):  
Total Lipid ◽  
Total Protein ◽  
Lipid Accumulation ◽  
Lipid Synthesis ◽  
Total Lipid Content ◽  
Nitrogen Stress ◽  
Total Protein Content ◽  
Total Carbohydrate ◽  
Chlorophyll Fluorescence Parameters ◽  
Parachlorella Kessleri

In order to study the effects of nitrogen stress on the lipid synthesis of Parachlorella kessleri TY02 and to understand the changes in growth, photosynthetic pigments, total protein and total carbohydrate contents during lipid accumulation, the cells of the strain were cultured in nitrogen-deficient (N−) and nitrogen-rich (N+) media for one week. Changes in cell growth, chlorophyll content, chlorophyll fluorescence parameters, neutral lipid and total lipid content, total protein content and total carbohydrate content were measured and analyzed. The results showed that, under nitrogen stress, the algal strain grew slowly, and chlorophyll and total protein contents decreased, while total carbohydrate and total lipid contents increased. This indicated that, under nitrogen stress, most of the carbon flowed to the synthesis of lipids and carbohydrates. Meanwhile, reducing the nitrogen content was a relatively economical and easy to operate method of promoting lipid accumulation.

The relationship between carbonic anhydrase activity and glycolate excretion in the blue-green alga Coccochloris peniocystis

Planta ◽  
1976 ◽  
Vol 128 (3) ◽  
pp. 217-223 ◽  
Author(s):  
R. K. Ingle ◽  
Brian Colman
Keyword(s):  
Carbonic Anhydrase ◽  
Green Alga ◽  
Carbonic Anhydrase Activity ◽  
Blue Green Alga ◽  
The Relationship

scholarly journals The Relationship between Liver Lipid Accumulation and Changes in Plasma Amino Acids in Mice Challenged with Carbon Tetrachloride

2016 ◽  
Vol 01 (02) ◽  
Author(s):  
Shinya Takagi ◽  
Daichi Oikawa ◽  
Hiromi Ikeda ◽  
Nozomi Tateiwa ◽  
Kazunori Koba ◽  
...  
Keyword(s):  
Amino Acids ◽  
Carbon Tetrachloride ◽  
Lipid Accumulation ◽  
Liver Lipid ◽  
Plasma Amino Acids ◽  
The Relationship

scholarly journals Active Hydrocarbon Biosynthesis and Accumulation in a Green Alga, Botryococcus braunii (Race A)

2013 ◽  
Vol 12 (8) ◽  
pp. 1132-1141 ◽  
Author(s):  
Mana Hirose ◽  
Fukiko Mukaida ◽  
Sigeru Okada ◽  
Tetsuko Noguchi
Keyword(s):  
Cell Cycle ◽  
Endoplasmic Reticulum ◽  
Cell Surface ◽  
Green Alga ◽  
Lipid Accumulation ◽  
Botryococcus Braunii ◽  
Acetate Incorporation ◽  
Lipid Bodies ◽  
Content Type ◽  
Oleaginous Microalgae

ABSTRACT Among oleaginous microalgae, the colonial green alga Botryococcus braunii accumulates especially large quantities of hydrocarbons. This accumulation may be achieved more by storage of lipids in the extracellular space rather than in the cytoplasm, as is the case for all other examined oleaginous microalgae. The stage of hydrocarbon synthesis during the cell cycle was determined by autoradiography. The cell cycle of B. braunii race A was synchronized by aminouracil treatment, and cells were taken at various stages in the cell cycle and cultured in a medium containing [ 14 C]acetate. Incorporation of 14 C into hydrocarbons was detected. The highest labeling occurred just after septum formation, when it was about 2.6 times the rate during interphase. Fluorescent and electron microscopy revealed that new lipid accumulation on the cell surface occurred during at least two different growth stages and sites of cells. Lipid bodies in the cytoplasm were not prominent in interphase cells. These lipid bodies then increased in number, size, and inclusions, reaching maximum values just before the first lipid accumulation on the cell surface at the cell apex. Most of them disappeared from the cytoplasm concomitant with the second new accumulation at the basolateral region, where extracellular lipids continuously accumulated. The rough endoplasmic reticulum near the plasma membrane is prominent in B. braunii , and the endoplasmic reticulum was often in contact with both a chloroplast and lipid bodies in cells with increasing numbers of lipid bodies. We discuss the transport pathway of precursors of extracellular hydrocarbons in race A.

scholarly journals Characterization of Growth and Cell Cycle Events Affected by Light Intensity in the Green Alga Parachlorella kessleri: A New Model for Cell Cycle Research

Biomolecules ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 891
Author(s):  
Vilém Zachleder ◽  
Ivan N. Ivanov ◽  
Veronika Kselíková ◽  
Vitali Bialevich ◽  
Milada Vítová ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Dna Replication ◽  
Light Intensity ◽  
Green Alga ◽  
Neutral Lipids ◽  
Growth Parameters ◽  
Daughter Cells ◽  
Light Intensities ◽  
Multiple Fission ◽  
Parachlorella Kessleri

Multiple fission is a cell cycle variation leading to the production of more than two daughter cells. Here, we used synchronized cultures of the chlorococcal green alga Parachlorella kessleri to study its growth and pattern of cell division under varying light intensities. The time courses of DNA replication, nuclear and cellular division, cell size, total RNA, protein content, dry matter and accumulation of starch were observed at incident light intensities of 110, 250 and 500 µmol photons m−2s−1. Furthermore, we studied the effect of deuterated water on Parachlorella kessleri growth and division, to mimic the effect of stress. We describe a novel multiple fission cell cycle pattern characterized by multiple rounds of DNA replication leading to cell polyploidization. Once completed, multiple nuclear divisions were performed with each of them, immediately followed by protoplast fission, terminated by the formation of daughter cells. The multiple fission cell cycle was represented by several consecutive doublings of growth parameters, each leading to the start of a reproductive sequence. The number of growth doublings increased with increasing light intensity and led to division into more daughter cells. This study establishes the baseline for cell cycle research at the molecular level as well as for potential biotechnological applications, particularly directed synthesis of (deuterated) starch and/or neutral lipids as carbon and energy reserves.

scholarly journals The Relationship of Ectopic Lipid Accumulation to Cardiac and Vascular Function in Obesity and Metabolic Syndrome

Obesity ◽  
2010 ◽  
Vol 18 (6) ◽  
pp. 1116-1121 ◽  
Author(s):  
Frederick L. Ruberg ◽  
Zhongjing Chen ◽  
Ning Hua ◽  
Sherman Bigornia ◽  
Zifang Guo ◽  
...  
Keyword(s):  
Metabolic Syndrome ◽  
Lipid Accumulation ◽  
Vascular Function ◽  
Relationship Of ◽  
The Relationship

scholarly journals Investigation of the Relationship between Bacteria Growth and Lipid Production Cultivating of Microalgae Chlorella Vulgaris in Seafood Wastewater

Energies ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2282 ◽  
Author(s):  
Thi Dong Phuong Nguyen ◽  
Duc Huy Nguyen ◽  
Jun Wei Lim ◽  
Chih-Kai Chang ◽  
Hui Yi Leong ◽  
...  
Keyword(s):  
Chlorella Vulgaris ◽  
Lipid Content ◽  
Lipid Accumulation ◽  
Lipid Production ◽  
Oxygen Demand ◽  
Value Added ◽  
Bacteria Growth ◽  
Microalgae Culture ◽  
The Relationship ◽  
Microalgae Growth

Algae biorefinery is gaining much attention for the sustainable production of value-added products (e.g., biofuels, protein supplements etc.) globally. The current study aimed to investigate the relationship between lipid production and bacteria growth by an initial microalgae Chlorella vulgaris density culture in seafood wastewater effluent (SWE). According to our results, the initial C. vulgaris concentration in SWE influenced lipid accumulation. The concentration ranged from 25–35 mg·L−1 which corresponds to SWE’s chemical oxygen demand concentration of 365.67 ± 3.45 mg·L−1. A higher microalgae growth rate and lipid content of 32.15 ± 1.45% was successfully attained. A higher lipid content, approximately double, was observed when compared to the control (16.8 ± 0.5%). Moreover, this study demonstrates that bacteria inhibited microalgae growth as the initial cell density stepped over 35 mg·L−1, which also affected lipid accumulation. This study shows an optimal lipid accumulation attained at moderate Chlorella vulgaris density culture in SWE. Hence, wastewater treatment incorporating microalgae culture could be greatly developed in the future to achieve a greener environment.

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