Effect of red light and gibberellic acid on lipid metabolism in germinating spores of the fern Anemia phyllitidis

Gemmrich, Armin R.

doi:10.1111/j.1399-3054.1982.tb00577.x

Cited by 6 publications

(1 citation statement)

References 22 publications

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“…Lipids and protein.-Total lipids were determined according to Gemmrich (1977), using 50 mg of spores in each extraction. Each specimen was analyzed in triplicate.…”

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confidence: 99%

Germination and Morphology of Spores of Trichipteris corcovadensis

Esteves¹,

Felippe²,

Melhem³

1985

American Fern Journal

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Published data show that spores of the majority knowledge temperatures, f ] ?nsibiJis (Miller of ferns, with the exception of the germination of spores of Cyathea delgadii (Marcondes-Ferreira & Felippe, 1984). In this paper a study was made of germination of Trichipteris corcovadensis (Raddi) Copel. This species is a tree fern that occurs in the Serra do Mar area of Southern Brazil (Tryon, 1970), at elevations from 250 to 2100 meters (Barrington, 1978). A study of the spore morphology of several specimens was also carried out. Spore morphology of the species has been studied previously as Trichopteris corcovadensis (Kremp & Kawasaki, 1969; Erdtman & Sorsa, 1971). Materials and Methods Material ofTrichipteris corcovadensis was collected in the Reserva Biologica do Parque Estadual das Fontes do Ipiranga, Sao Paulo, Brazil, and identified by Dr. Paulo Windish (UNESP, Sao Jose do Rio Preto). Spores were collected from design March of different years. These ]f D (1982); and E (1982). The spores were stored in closed bottles in the dark at 4°C. Some material from specimen B was also stored at 25°G. Spores from the were out with all five specimens Germination. using 25 ml of Mohr ion, as modihed by Dyer (1979), in an Erlenmeyer flask. The flasks medium were autoclaved at 120°C for 20 minutes, and nystatin (50 units-mi-1 ) was patula. For each treatment, three three microscope slides were prepared from through a microscope. Gernn rhizoid The experiments were carried out in growth cabinets (Forma

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“…Lipids and protein.-Total lipids were determined according to Gemmrich (1977), using 50 mg of spores in each extraction. Each specimen was analyzed in triplicate.…”

mentioning

confidence: 99%

Germination and Morphology of Spores of Trichipteris corcovadensis

Esteves¹,

Felippe²,

Melhem³

1985

American Fern Journal

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Stress induced lipid production in Chlorella vulgaris: Relationship with specific intracellular reactive species levels

Menon

Balan

Suraishkumar

2013

Biotech & Bioengineering

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Microalgae have significant potential to be an important alternative energy source, but the challenges to the commercialization of bio-oil from microalgae need to be overcome for the potential to be realized. The application of stress can be used to improve bio-oil yields from algae. Nevertheless, the understanding of stress effects is fragmented due to the lack of a suitable, direct quantitative marker for stress. The lack of understanding seems to have limited the development of stress based strategies to improve bio-oil yields, and hence the commercialization of microalgae-based bio-oil. In this study, we have proposed and used the specific intracellular reactive species levels (siROS) particularly hydroxyl and superoxide radical levels, separately, as direct, quantitative, markers for stress, irrespective of the type of stress induced. Although ROS reactions are extremely rapid, the siROS level can be assumed to be at pseudo-steady state compared to the time scales of metabolism, growth and production, and hence they can be effective stress markers at particular time points. Also, the specific intracellular (si-) hydroxyl and superoxide radical levels are easy to measure through fluorimetry. Interestingly, irrespective of the conditions employed in this study, that is, nutrient excess/limitation or different light wavelengths, the cell concentrations are correlated to the siROS levels in an inverse power law fashion. The composite plots of cell concentration (y) and siROS (x) yielded the correlations of y = k1 · x(-0.7) and y = k2 · x(-0.79) , for si-hydroxyl and si-superoxide radical levels, respectively. The specific intracellular (si-) neutral lipid levels, which determine the bio-oil productivity, are related in a direct power law fashion to the specific hydroxyl radical levels. The composite plot of si-neutral lipid levels (z) and si-hydroxyl radical level (x) yielded a correlation of z = k3 · x(0.65) . More interestingly, a nutrient shift caused a significant change in the sensitivity of neutral lipid accumulation to the si-hydroxyl radical levels.

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Fern Fatty Acids: From Diversity to Dietary Value

Некрасов

2022

Reference Series in Phytochemistry

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Effect of red light and gibberellic acid on lipid metabolism in germinating spores of the fern Anemia phyllitidis

Cited by 6 publications

References 22 publications

Germination and Morphology of Spores of Trichipteris corcovadensis

Germination and Morphology of Spores of Trichipteris corcovadensis

Stress induced lipid production in Chlorella vulgaris: Relationship with specific intracellular reactive species levels

Fern Fatty Acids: From Diversity to Dietary Value

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