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Light induced calcium binding to mangrove PS II particles
Author(s) -
Preston Christopher,
Altin Joseph G.,
Bygrave Fyfe L.,
Critchley Christa
Publication year - 1987
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(87)81291-7
Subject(s) - mangrove , calcium , chemistry , oxygen evolution , oxygen , biophysics , environmental chemistry , electrode , biology , ecology , organic chemistry , electrochemistry
A combination calcium selective and oxygen electrode system was used to measure the Ca 2+ and O 2 concentrations of a solution surrounding mangrove PS II particles. Concomitant uptake of Ca 2+ and oxygen evolution in the light were observed. The Ca 2+ bound during the light was released in a subsequent dark period. The Ca 2+ binding was dependent on both chlorophyll and Ca 2+ concentrations. Up to 3000 Ca 2+ were calculated to be bound per reaction centre.