The Effects of Ultraviolet Irradiation on a Coccoid Blue-Green Alga: Survival, Photosynthesis, and Photoreactivation | Zendy

Chase Van Baalen | Zendy

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The Effects of Ultraviolet Irradiation on a Coccoid Blue-Green Alga: Survival, Photosynthesis, and Photoreactivation

Author(s) -

Chase Van Baalen

Publication year - 1968

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.43.10.1689

Subject(s) - photolyase , photosynthesis , irradiation , ultraviolet irradiation , botany , biology , ultraviolet , blue light , blue green algae , ultraviolet radiation , chemistry , biochemistry , cyanobacteria , radiochemistry , optics , bacteria , physics , genetics , dna repair , gene , nuclear physics

The effects of UV irradiation (254 mmu) on a coccoid blue-green alga Agmenellum quadruplicatum, Strain PR-6, have been examined in terms of the survival curve and measurement of short time photosynthetic rates. From study of survival evidence has been found for a strong photoreactivation centered near 430 mmu. Measurements of photosynthetic rate suggest that there is a correlation between decay of photosynthesis and survival after UV exposure. The UV induced decay in photosynthetic activity is reversed by the identical photoreactivation conditions that increase the survival level. The photosynthetic data are interpreted as demonstrating a photoreactivation of photosynthesis in blue-green algae.

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