Growth, photosynthesis, nitrogen fixation and carbohydrate production by a unicellular cyanobacterium, Synechococcus sp. (Cyanophyta)

Phlips, Edward J.; Zeman, C.; Hansen, Phyllis

doi:10.1007/bf00003876

Cited by 54 publications

(59 citation statements)

References 29 publications

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“…Ce phénomène a déjà été décrit à diverses reprises au travers d'études réalisées sur plusieurs espèces de Chlorophycées, de Diatomées, de Rhodophycées et de Cyanophycées ( Myklestad 1974, Flaak & Epifanio 1978, Dermoun 1987, Behrens et al 1989, Phlips et al 1989). …”

Section: Discussionunclassified

Influence de la température, de l'intensité lumineuse et du stade de croissance sur la composition biochimique deChlorella sorokinianaShihira & Krauss

Belkoura¹,

Benider²,

Dauta

1997

Ann. Limnol. - Int. J. Lim.

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Dans une optique de valorisation de l'algue verte Chlorella sorokiniana, la composition biochimique de cette espèce a été déterminée en fonction de la température d'incubation, de l'intensité lumineuse et du stade de croissance. A 35°C, sous un éclairement de 140 uE.nr 2 .s _1 , et en phase exponentielle de croissance, les analyses effectuées ont révélé que la biomasse algale était composée d'environ 40 % de protéines, 30 % de glucides et 18 % de lipides (% de la matière sèche des cellules). Les résultats obtenus ont montré également que les teneurs de ces constituants dépendaient étroitement des conditions de culture. Ainsi, il est possible d'orienter le métabolisme cellulaire de cette espèce vers la production du ou des metabolites souhaités, en choisissant les conditions environnementales appropriées et le moment de la récolte de la biomasse algale. Effects of temperature, light intensity and growth phase on the biochemical composition of Chlorella sorokiniana Shihira & KraussKeywords : Chlorella sorokiniana, proteins, carbohydrates, lipids, environmental factors.In view of the valorization of the green alga Chlorella sorokiniana, the biochemical composition of this species was determined as a function of temperature, light intensity and growth phase. At 35°C, under an irradiancé of 140 nE.m^.s 1 , and at the exponential growth phase, the algal biomass contains about 40 % of proteins, 30 % of carbohydrates and 18 % of lipids (% of cellular dry weight). The relative amounts of these compounds are closely dependent on environmental factors and culture age. So, by selecting the suitable environmental conditions and the harvesting time, it is possible to orient the cellular metabolism to the production of the desirable compounds.

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Section: Discussionunclassified

Influence de la température, de l'intensité lumineuse et du stade de croissance sur la composition biochimique deChlorella sorokinianaShihira & Krauss

Belkoura¹,

Benider²,

Dauta

1997

Ann. Limnol. - Int. J. Lim.

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“…These differences are illustrated by patterns observed at four sampling sites representative of the ecologically distinct regions of the bay defined by Phlips et al (1995) (Fig. 1B).…”

Section: ϫ3mentioning

confidence: 97%

“…Blooms of diatoms are common on both the Atlantic and Gulf coasts. In recent years, the picoplanktonic cyanobacterium Synechococcus has been added to the list of bloom-forming phytoplankton, with reports from Florida Bay and the Florida Keys (Phlips and Badylak 1996). The proliferation of these blooms in the only region of the continental United States containing sensitive coral reef ecosystems has caused widespread concern among scientists and water managers (Boesch et al 1993).…”

Section: ϫ3mentioning

confidence: 99%

“…Picoplankters were enumerated with fluorescence microscopy (Phlips et al 1995). Subsamples of station water were Fig.…”

Section: ϫ3mentioning

confidence: 99%

“…1. Locations of sampling sites within Florida Bay (A) and spatial extent of ecological regions within the bay (B), as described by Phlips et al (1995). filtered onto 0.2-m Nuclepore filters and mounted between microscope slides and coverslips with immersion oil.…”

Section: ϫ3mentioning

confidence: 99%

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Blooms of the picoplanktonic cyanobacterium Synechococcus in Florida Bay, a subtropical inner‐shelf lagoon

Phlips

Badylak

Lynch

1999

Limnology & Oceanography

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152

145

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Seventeen sites in Florida Bay were sampled on a monthly basis for 51 months to describe the spatial and temporal patterns of phytoplankton blooms. The study focused on the picoplanktonic cyanobacterium Synechococcus. The greatest frequency and intensity of blooms was observed in the north‐central region of Florida Bay, where cellular biovolumes of this species regularly exceeded 10 × 106μm3 ml−1 and chlorophyll a concentrations were frequently >20 mg m−3. Synechococcus blooms were often restricted to this region of the bay, in part because of the network of shallow mudbanks and islands that restrict water exchange with other regions and outlying waters of the Atlantic Ocean and Gulf of Mexico. The most severe blooms occurred in the summer and fall (May–December). High concentrations of Synechococcus also appeared during the fall in the south‐central region of the bay. The appearance of blooms in this region coincided with the onset of seasonal cold fronts, whose strong northerly and northwesterly winds appear to drive bloom‐laden water from the north‐central region into adjacent parts of the bay. A number of physical and chemical factors appear to contribute to the remarkably high phytoplankton biovolumes observed in the north‐central region of Florida Bay. Physical factors include the shallowness and hydrological isolation of the region. The dominance of Synechococcus in the center of the bay may be attributable to several of the unique physicochemical characteristics of this species, including its small size, cyanobacterial metabolism, euryhaline character, buoyancy, and tolerance to high light intensity.

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Estimation of growth and exopolysaccharide production by two soil cyanobacteria, Scytonema tolypothrichoides and Tolypothrix bouteillei as determined by cultivation in irradiance and temperature crossed gradients

Kvíderová

Kumar

Lukavský

et al. 2018

Engineering in Life Sciences

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Two filamentous cyanobacteria of the genera Scytonema and Tolypothrix were reported to be effective for stabilizing soil in arid areas due to the production of significant amounts of extracellular polysaccharides (EPS). These EPS may also have applications in the biotechnology industry. Therefore, two cyanobacterial species, Scytonema tolypothrichoides and Tolypothrix bouteillei were examined using crossed gradients of temperature (8–40°C) and irradiance (3–21 W m−2) to identify their temperature and irradiance optima for maximum biomass and EPS production. According to their reported temperature requirements, both strains were considered mesophilic. The optimum growth range of temperature in S. tolypothrichoides (27 to 34°C) was higher than T. bouteillei (22–32°C). The optimum irradiance range for growth of S. tolypothrichoides (9–13 W m−2) was slightly lower than T. bouteillei (7–18 W m−2). Maximum EPS production by S. tolypothrichoides occurred at similar temperatures (28–34°C) as T. bouteillei (27–34°C), both slightly higher than for maximum growth. The optimum irradiance range for EPS production was comparable to that for growth in S. tolypotrichoides (8–13 W m−2), and slightly lower in T. bouteillei (7–17 W m−2). The Redundancy Analysis confirmed that temperature was the most important controlling factor and protocols for field applications or for mass cultivation can now be developed.

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Growth, photosynthesis, nitrogen fixation and carbohydrate production by a unicellular cyanobacterium, Synechococcus sp. (Cyanophyta)

Cited by 54 publications

References 29 publications

Influence de la température, de l'intensité lumineuse et du stade de croissance sur la composition biochimique deChlorella sorokinianaShihira & Krauss

Influence de la température, de l'intensité lumineuse et du stade de croissance sur la composition biochimique deChlorella sorokinianaShihira & Krauss

Blooms of the picoplanktonic cyanobacterium Synechococcus in Florida Bay, a subtropical inner‐shelf lagoon

Estimation of growth and exopolysaccharide production by two soil cyanobacteria, Scytonema tolypothrichoides and Tolypothrix bouteillei as determined by cultivation in irradiance and temperature crossed gradients

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