Adenylate concentration and energy charge in different thallus regions and after UV radiation in brown, red and green algae

A method was developed to extract adenine nucleotides AMP, ADP, and ATP from marine macroalgal tissue to gain information on the cellular energy charge. Quantification was carried out by high performance liquid chromatography (HPLC). Three species from the rocky shore of the island of Helgoland (German Bight) were examined: Laminaria saccharina (Phaeophyta), Chondrus crispus (Rhodophyta), and Ulva lactuca (Chlorophyta). In L. saccharina and C. crispus, the adenylate energy charge (AEC) was determined in different thallus regions. AEC varied in relation to tissue age and function. Higher AEC values typically occurred in thallus regions with meristematic activity. Furthermore, L. saccharina and U. lactuca were exposed to UV-A and elevated UV-B radiation. The AEC was calculated and the maximal quantum yield of photosystem II (Fv/Fm) was determined as indicators for UV stress. In both species, the AEC remained at high values (0.72 ± 0.04), while Fv/Fm dropped rapidly. The results show that the photosynthesis of the phaeophyte is more resistant to UV radiation than the chlorophyte.

Degradation of pesticides by algae /

Prepared for U.S. Environmental Protection Agency, Office of Research and Development, Environmental Research Laboratory, Athens, Ga., under grant no. R800371.

Rock filters for removal of algae from lagoon effluents /

Mode of access: Internet.

The Marine Algae of Florida with special reference to the Dry Tortugas.

Bibliography: p. 213.

The marine algae of Iceland : I. Rhodophyceæ /

Taken from: Botanisk tidskrift, 24. bind.

On some freshwater algae from the West Indies /

From Journal of the Linnean Society. Botany, v. 30, no. 208, p. 264-280. 1894.

Cryptogamae Japonicae iconibus illustratae; or Figures with brief descriptions and remarks of the musci, hepaticae, lichenes, fungi and algae of Japan,

In Japanese, with added title-page in Latin and English.

Algae /

"Herausgegeben im allerhöchsten auftrage unter der leitung der Kaiser lichen Akademie der wissenschaften".

Algae in water supplies; an illustrated manual on the identification, significance, and control of algae in water supplies.

Mode of access: Internet.

Algae,

Mode of access: Internet.

Algae and metropolitan wastes; transactions.

"Held ... under the sponsorship of the Division of Water Supply and Pollution Control and the Robert A. Taft Sanitary Engineering Center."

Algae britannicae : or, Descriptions of the marine and other inarticulated plants of the British Islands, belonging to the order Algae /

Includes bibliographical references and index

Nutrients and algae in northeast Colorado lakes /

Issued Mar. 1976.

Automatic control of algae cultures,

"Translation of an article ... in ... Uspekhi sovremennoy biologii ... vol. 56, no.1(4) ... (1963."

A catalog of Illinois algae.

Mode of access: Internet.