Effects of nitrogen on growth and carbohydrate formation in Porphyridium cruentum

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Fältnamn	Indikatorer	Metadata
000		04938naa a2200673 4500
001		oai:gup.ub.gu.se/189118
003		SwePub
008		240528s2014 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
009		oai:research.chalmers.se:9ffa7757-0841-411e-a1dd-c48a3f9a5cd9
024	7	a https://gup.ub.gu.se/publication/1891182 URI
024	7	a https://doi.org/10.2478/s11535-013-0248-z2 DOI
024	7	a https://research.chalmers.se/publication/1891182 URI
040		a (SwePub)gud (SwePub)cth
041		a eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Razaghi, Aliu Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences,University of Gothenburg4 aut
245	1 0	a Effects of nitrogen on growth and carbohydrate formation in Porphyridium cruentum
264		c 2013-11-09
264	1	b Walter de Gruyter GmbH,c 2014
338		a electronic2 rdacarrier
520		a The microalga Porphyridium cruentum (Rhodophyta) has several industrial and pharmaceutical uses, especially for its polysaccharide production. This study aimed to investigate the influence of nitrogen levels as reflected by altered N:P ratios on the production and content of biomass and carbohydrate. N:P molar ratios were altered in batch cultures to range from 1.6 to 50 using the Redfield ratio of 1:16 as reference. Algal growth (estimated as final cell number, biomass concentration and maximum specific growth rate) was negatively affected at low N:P ratios. The optimal N:P ratio for growth was identified at 35-50, with specific growth rates of 0.19 day(-1) and maximum cell concentrations of 59 center dot 10(8) cells L-1 and 1.2 g dry weight of biomass L-1. In addition, variation in cell size was seen. Cells with larger diameters were at higher N:P ratios and smaller cells at lower ratios. The cellular carbohydrate content increased under reduced nitrogen availability. However, because accumulation was moderate at the lowest N:P ratio, 0.4 g per g dry weight biomass compared to 0.24 at the Redfield ratio of 16:1, conditions for increased total carbohydrate formation were identified at the N:P ratios optimal for growth. Additionally, carbohydrates were largely accumulated in late exponential to stationary phase.
650	7	a NATURVETENSKAPx Biologix Genetik0 (SwePub)106092 hsv//swe
650	7	a NATURAL SCIENCESx Biological Sciencesx Genetics0 (SwePub)106092 hsv//eng
650	7	a TEKNIK OCH TEKNOLOGIERx Industriell bioteknikx Bioprocessteknik0 (SwePub)209012 hsv//swe
650	7	a ENGINEERING AND TECHNOLOGYx Industrial Biotechnologyx Bioprocess Technology0 (SwePub)209012 hsv//eng
650	7	a NATURVETENSKAPx Biologix Immunologi0 (SwePub)106052 hsv//swe
650	7	a NATURAL SCIENCESx Biological Sciencesx Immunology0 (SwePub)106052 hsv//eng
650	7	a NATURVETENSKAPx Biologix Mikrobiologi0 (SwePub)106062 hsv//swe
650	7	a NATURAL SCIENCESx Biological Sciencesx Microbiology0 (SwePub)106062 hsv//eng
650	7	a NATURVETENSKAPx Biologix Biokemi och molekylärbiologi0 (SwePub)106022 hsv//swe
650	7	a NATURAL SCIENCESx Biological Sciencesx Biochemistry and Molecular Biology0 (SwePub)106022 hsv//eng
650	7	a NATURVETENSKAPx Biologix Cellbiologi0 (SwePub)106042 hsv//swe
650	7	a NATURAL SCIENCESx Biological Sciencesx Cell Biology0 (SwePub)106042 hsv//eng
653		a Rhodophyta
653		a Red algae
653		a Redfield ratio
653		a Nitrogen-to-phosphorous ratio
653		a RED ALGA PORPHYRIDIUM
653		a EXTRACELLULAR POLYSACCHARIDE
653		a CHLAMYDOMONAS-REINHARDTI
653		a NUTRIENT LIMITATION
653		a CULTURE-MEDIA
653		a AERUGINEUM
653		a STARVATION
653		a PURPUREUM
653		a CYCLE
653		a PURPUREUM
700	1	a Godhe, Anna,d 1967u Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences,University of Gothenburg4 aut0 (Swepub:gu)xgodan
700	1	a Albers, Eva,d 1966u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)albers
710	2	a Göteborgs universitetb Institutionen för biologi och miljövetenskap4 org
773	0	t Central European Journal of Biologyd : Walter de Gruyter GmbHg 9:2, s. 156-162q 9:2<156-162x 1895-104Xx 1644-3632
773	0	t Open Life Sciencesd : Walter de Gruyter GmbHg 9:2, s. 156-162q 9:2<156-162x 2391-5412
856	4	u https://gup.ub.gu.se/publication/189118x primaryx freey FULLTEXT
856	4	u https://research.chalmers.se/publication/189118/file/189118_Fulltext.pdfx primaryx freey FULLTEXT
856	4 8	u https://gup.ub.gu.se/publication/189118
856	4 8	u https://doi.org/10.2478/s11535-013-0248-z
856	4 8	u https://research.chalmers.se/publication/189118

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By the author/editor: Razaghi, Ali; Godhe, Anna, 196 ...; Albers, Eva, 196 ...

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NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Genetics

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Industrial Biote ...; and Bioprocess Techn ...

NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Immunology

NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Microbiology

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NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Cell Biology

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