Effective Absorption Cross-Sections in Porphyridium cruentum | Zendy

Arthur C. Ley | Zendy

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Effective Absorption Cross-Sections in Porphyridium cruentum

Author(s) -

Arthur C. Ley

Publication year - 1984

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.74.2.451

Subject(s) - phycobilisome , photosystem ii , absorption (acoustics) , photochemistry , photosystem , absorption cross section , photosystem i , chemistry , photosynthesis , cross section (physics) , botany , cyanobacteria , physics , biology , optics , genetics , quantum mechanics , bacteria

Effective absorption cross-sections for O(2) production by Porphyridium cruentum were measured at 546 and 596 nanometers. Although all photosystem II reaction centers are energetically coupled to phycobilisomes, any single phycobilisome acts as antenna for several photosystem II reaction centers. The cross-section measured in state I was 50% larger than that measured in state II.

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