Effect of Red and Blue Light on Morphogenesis and Metabolism of Acetabularia Mediterranea

Clauss, H.

doi:10.1016/b978-0-12-123360-0.50015-1

Cited by 25 publications

(9 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, if photosynthesis is expressed in terms of dry weight or area, oxygen evolution was higher in blue light and consequently, in this case, irradiance with blue light seems to mimic sun conditions and irradiance with red light mimics shade conditions. These last results are in accordance with the data obtained in Acetabularia (Clauss, 1970;Schmid, 1991) and in higher plants by Lichtenthaler & Meir (1984). In summary, when photosynthetic rate in Porphyra is expressed per unit dry weight or area, blue light seems to mimic sun conditions, but as expressed per unit of total pigments, it seems to mimic shade conditions.…”

Section: "1/'supporting

confidence: 82%

“…The green alga Acetabularia mediterranea Lamouroux [=A. acetabulum (L.) Silva] dies after 2-3 weeks in red light but can be kept alive by daily pulses of blue light (Clauss, 1970;Schmid, 1984;Wennicke & Schrnid, 1987). Similarly, the brown alga Dictyota dichotoma Hudson grows well in blue light but deteriorates after several weeks in red light (M/,iller & Clauss, 1976).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Red and blue light regulation of growth and photosynthetic metabolism inPorphyra umbilicalis(Bangiales, Rhodophyta)

Figueroa

Aguilera

Niell

1995

European Journal of Phycology

100

View full text Add to dashboard Cite

Thallus discs 9 mm in diameter of Porphyra umbilicalis were cultivated for 4 weeks in either blue or red light at 50 #molm -2 s -1 and 12 h light per day. Growth rate, in terms of weight and area, carbon content and dimensions of intercellular matrix, was higher in thalli grown in red light, while concentrations of soluble protein and photosynthetic pigments (chlorophyll, phycocyanin and phycoerythrin in particular), package effect and cell volume were higher in thalli grown in blue light. The slower growth rate in blue light was ascribed mainly to low efficiency of light absorption (high package effect) and low photosynthetic efficiency (in terms of total photosynthetic pigments) due to little overlap of photosystem I and photosystem II pigments in this red alga in blue light.

show abstract

Section: "1/'supporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Red and blue light regulation of growth and photosynthetic metabolism inPorphyra umbilicalis(Bangiales, Rhodophyta)

Figueroa

Aguilera

Niell

1995

European Journal of Phycology

100

View full text Add to dashboard Cite

show abstract

“…On the other hand, the finding that the blue light supplement did not improve growth performance was unexpected. It is generally believed that long‐term photoautotrophic culture requires both red and blue light for algae (Clauss, 1970; Terborgh, 1966) as well as for other higher plants (Bula et al, 1991; Hoenecke et al, 1992; Schmidt, 1984; Voskresenskaya et al, 1968). The result that Chlorella could grow on red LEDs was encouraging since no highly efficient blue LEDs are currently available (Barta et al, 1990).…”

Section: Discussionmentioning

confidence: 99%

Photoacclimation of Chlorella vulgaris to Red Light from Light‐Emitting Diodes Leads to Autospore Release Following Each Cellular Division

Lee

Palsson

1996

Biotechnology Progress

View full text Add to dashboard Cite

The detailed light requirement for photosynthesis and photoautotrophic cell growth can be assessed using solid state technology. Advanced light-emitting diodes (LEDs), constructed with double-power double-heterostructure (DDH) gallium aluminum arsenide (GaAlAs) chips, were examined for their ability to support mass culture of the eucaryotic alga Chlorella vulgaris. LEDs with peak emittance of 680 nm (with half-power band width of 20 nm) were used as a sole light source for the cultivation of C. vulgaris. Fluorescent light (FL) served as a control. The final cell mass and specific cellular growth rate under LEDs were comparable to those obtained under full-spectrum light (FL). The narrow-spectrum monochromatic red light was found to reduce the average cell volume from 60 µm 3 to 30 µm 3 , and to make the size distribution and the per cell DNA distribution narrower, but did not affect the total biomass production. By switching light sources, the two distinct cell population states (obtained under red LEDs and FL, respectively) were found to be interchangeable. Two parametric flow cytometric analyses showed that the cells grown under red LED light had a more uniform DNA content at all cell sizes, as compared to cells grown under FL. These results show that the critical cell size for releasing autospores under red LED is smaller than that under FL. The number of autospores in one mother cell when grown under LED light appeared to be two, so that the mother cells break up after only one round of DNA replication. Although the solid state LED light source altered the cell cycle behavior of C. vulgaris, it can be used as an effective light source for autotrophic growth. Use of LEDs therefore promises to advance the current state of algal photobioreactors due to their efficiency, smallness, reliability, long lifetime, and desirable light characteristics.

show abstract

“…Analysis of the eect that blue light has on cap initiation (Clauss 1968) has been hindered because blue light also aects metabolism, including photosynthesis, in A. acetabulum (Schael and Clauss 1968;Clauss 1970;Schmid 1984;Wennicke and Schmid 1987). The situation is further complicated because blue light may also have a photomorphogenic eect on photosynthesis: plants that received short pulses of blue light in a background of continuous red produced as much oxygen as did those grown in continuous blue light, whereas plants grown in continuous red light produced low levels of oxygen (Schmid 1991).…”

Section: Introductionmentioning

confidence: 99%

The roles of light and the nucleus in the regulation of reproductive onset in Acetabularia acetabulum

Kratz

Mandoli

1999

Planta

View full text Add to dashboard Cite

At reproductive onset the marine green alga Acetabularia acetabulum (L.) P.C. Silva redirects growth from vertical elongation of the axis of the plant to lateral expansion of a disk-shaped reproductive structure, the "cap." We used amputation to synchronize cap initiation and to facilitate investigation of the light requirements during amputation-induced cap initiation. Following amputation of a nascent cap, most plants initiate one whorl of vegetative hairs and then a cap. Both hair and cap initiation required photosynthesis, as indicated by studies with 3-(3',4'-dichlorophenyl)-1, 1-dimethylurea, but did not require the nucleus. Amputation-induced hair initiation occurred in red light, but 10 min of blue light given in a background of red light significantly increased hair initiation, supporting previous studies that hair initiation is a blue-light-triggered photomorphogenic event. Amputation-induced cap initiation also occurred in red light, but daily 10-min flashes of blue light given in a background of red light did not significantly enhance cap initiation. We also examined the light requirements of intact plants at each phase of development. In the absence of blue light, juveniles and adults with /=13.7 +/- 4.3 whorls of hairs initiated caps in the absence of blue light, suggesting that there is a point in late adult development beyond which cap initiation does not require blue light. Several plausible interpretations of the role of light and the nucleus in the regulation of reproductive onset are discussed to try to reconcile these data with those in the literature.

show abstract

Effect of Red and Blue Light on Morphogenesis and Metabolism of Acetabularia Mediterranea

Cited by 25 publications

References 14 publications

Red and blue light regulation of growth and photosynthetic metabolism inPorphyra umbilicalis(Bangiales, Rhodophyta)

Red and blue light regulation of growth and photosynthetic metabolism inPorphyra umbilicalis(Bangiales, Rhodophyta)

Photoacclimation of Chlorella vulgaris to Red Light from Light‐Emitting Diodes Leads to Autospore Release Following Each Cellular Division

The roles of light and the nucleus in the regulation of reproductive onset in Acetabularia acetabulum

Contact Info

Product

Resources

About