Effect of Salinity and pH on Fatty Acid Profile of The Green Algae Tetraselmis suecica

Al-Mutairi, Adel; Toulibah, Hussein Elsayed

doi:10.4172/2157-7463.1000333

Cited by 17 publications

(12 citation statements)

References 15 publications

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“…Thus, pH is not simply a static factor that affects growth, but rather is also an indicator for healthy algal growth. Thus, the natural decline in acid reaction of the algal growth medium gives rise to a decline in algal growth, indicating a high death rate ( Al-Mutairi and Toulibah, 2017 ). In the present study, it was found that the lowest growth occurred at the highest salt level (1.0 M) at all tested pH levels, and that increasing of salt concentration above 0.4 M reduced the dry weight accumulation.…”

Section: Resultsmentioning

confidence: 99%

Combined effect of salinity and pH on lipid content and fatty acid composition of Tisochrysis lutea

Al-Mutairi

El-Sayed

Reda

2020

Saudi Journal of Biological Sciences

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Section: Resultsmentioning

confidence: 99%

Combined effect of salinity and pH on lipid content and fatty acid composition of Tisochrysis lutea

Al-Mutairi

El-Sayed

Reda

2020

Saudi Journal of Biological Sciences

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“…Variasi pH dalam media kultur dapat mempengaruhi metabolisme dan pertumbuhan kultur mikroalga antara lain mengubah keseimbangan karbon anorganik, mengubah ketersediaan nutrien dan mempengaruhi fisiologi sel [8], [10] . Kisaran pH untuk pertumbuhan pada kebanyakan mikroalga antara 7-9 [11] .…”

Section: Padaunclassified

“…Pada hari ke-10 dilakukan variasi pH yaitu pada pH 5, 7, 9, dan pH 8,2 yang merupakan pH pupuk GrowMore 32-10-10. Pemberian variasi pH dilakukan dengan cara menambahkan HCl 10 M untuk suasana asam dan KOH 1 M untuk suasana basa sebanyak beberapa tetes hingga mencapai pH yang diinginkan [8] .…”

Section: Induksi Mikroalga C Vulgaris Dengan Variasi Phunclassified

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Pengaruh Pemberian Variasi pH terhadap Produksi Trigliserida Total dan Komposisi Asam Lemak dari Chlorella Vulgaris Air Tawar

2019

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Chlorella vulgaris is a microalgae that has high lipid content and potential as raw material for biofuel production. This study aims are to determine the effect of pH on growth, lipid production and fatty acid composition of C. vulgaris by using Growmore 32-10-10 fertilizer as a culture medium. Microalgae were cultured in medium Growmore 32-10-10 for 10 days. Afterward, pH of medium was varied into pH 5, 7, 8.2 and 9 and continued cultivate for 3 days. C. vulgaris cultured at pH 8.2 which is a control pH reached optimum growths. The GC-MS analysis for lipid productivity of C. vulgaris was 0.5020 g/L/day and 0.2902 g/L/day for microalgae grew at pH 8.2 and 9, respectively. Cultures at pH 8.2 and 9 produce methyl hexadecanoate, methyl 9-octadecanoate, methyl octadecanoate, methyl 9,12-octadecadienoate, methyl 9,11-octadecadienoate. Additional fatty acid methyl nonadecanoate was also found in C. vulgaris grew at pH 9. The low and high pH stress of C. vulgaris culture medium did not affect culture growth but altered lipid production and fatty acid composition.

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“…Water bodies with naturally high levels of salinity are widely distributed on all continents of the globe and are the objects of numerous scientific studies (Heidelberg et al, 2013;Afonina & Tashlykova, 2016). The increased attention paid to saline waterbodies is primarily due to the development of specific biota in them, represented by halotolerant and halophilic species, many of which are of biotechnological importance as producers of biologically active substances (Solovchenko et al, 2015;Mohammadi et al, 2015;Almutairi & Toulibah, 2017).…”

Section: Introductionmentioning

confidence: 99%

Algal and cyanobacterial diversity in saline rivers of the Elton Lake Basin (Russia) studied via light microscopy and next-generation sequencing

et al. 2021

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Naturally saline rivers are known in various regions of the world. Saline rivers with a salinity gradient from the source to the mouth are particularly interesting, because the range of salinity is the structure-forming factor of the hydrobiont assemblage. Such rivers are represented by saline rivers of the Elton Lake Basin in Volgograd region of Russia (the Bolshaya Samoroda River and the Malaya Samoroda River). Herein, we analyzed taxonomic structure and species diversity of microalgae and Cyanobacteria of the saline rivers flowing into the Elton Lake by light microscopy and next-generation sequencing. The differences and possible causes of inconsistencies in the results obtained by these methods are discussed. In total, 91 taxa of microorganisms were identified by integrated approach in the assemblages of microalgae and Cyanobacteria in the middle course of the Bolshaya Samoroda River, and 60 taxa – in the river mouth. The species diversity of those assemblages in the hypersaline Malaya Samoroda River was lower: 27 taxa from the middle course and 23 taxa from the mouth. Next-generation sequencing allowed us to refine and expand the list of microalgae taxa in the studied saline rivers due to detection of species which were hard to identify, low-abundance taxa, as well as extremely small-cell forms. Some discrepancies between the data obtained by light microscopy and next-generation sequencing indicate the advantage of simultaneous use of both methods for study of the algae communities. Such a comprehensive approach provides the most accurate and correct list of taxa added with the morphological descriptions and 18S rRNA and 16S rRNA partial sequences. Generally, 18 taxa have been recorded for the first time in the Bolshaya Samoroda River, belonging to the phyla Chlorophyta (Borodinellopsis sp., Chlorochytrium lemnae Cohn, Caespitella sp., Halochlorococcum sp., Tetraselmis cordiformis (H. J. Carter) F. Stein), Ochrophyta (Pseudocharaciopsis ovalis (Chodat) D. J. Hibberd, Characiopsis sp., Poterioochromonas stipitata Scherffel, Chrysolepidomonas sp.), Euglenozoa (Euglena bucharica I. Kisselev, Lepocinclis tripteris (Dujardin) B. Marin & Melkonian, Phacus orbicularis K. Hübner, P. parvulus G. A. Klebs), Cryptophyta (Hemiselmis cryptochromatica C. E. Lane & J. M. Archibald, Rhodomonas sp., Hanusia phi J. A. Deane), Haptophyta (Pavlova sp.), Cyanobacteria (Johanseninema constrictum (Szafer) Hasler, Dvorák & Poulícková). Seven taxa have been detected for the first time in the algal and cyanobacterial assemblages of the Malaya Samoroda River from the phyla Chlorophyta (Tetraselmis cordiformis, T. arnoldii (Proschkina-Lavrenko) R. E. Norris, Hori & Chihara, T. tetrathele (West) Butcher, Pyrobotrys elongatus Korshikov), Cryptophyta (Hanusia phi), and Cyanobacteria (Synechococcus elongatus (Nägeli) Nägeli, Oscillatoria simplicissima Gomont).

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Effect of Salinity and pH on Fatty Acid Profile of The Green Algae Tetraselmis suecica

Cited by 17 publications

References 15 publications

Combined effect of salinity and pH on lipid content and fatty acid composition of Tisochrysis lutea

Combined effect of salinity and pH on lipid content and fatty acid composition of Tisochrysis lutea

Pengaruh Pemberian Variasi pH terhadap Produksi Trigliserida Total dan Komposisi Asam Lemak dari Chlorella Vulgaris Air Tawar

Algal and cyanobacterial diversity in saline rivers of the Elton Lake Basin (Russia) studied via light microscopy and next-generation sequencing

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