Open AccessPhotophosphorylation and Carbon Dioxide Fixation by Chloroplasts Isolated from Populus deltoides
Author(s) -
Rubén Hernández-Gil,
Michail Schaedle
Publication year - 1972
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.50.3.375
Subject(s) - photophosphorylation , photosynthesis , chloroplast , chlorophyll , carbon fixation , carbon dioxide , botany , biology , chlorophyll a , photosynthetically active radiation , rubisco , chemistry , biochemistry , ecology , gene
A system has been developed for the isolation of photosynthetically active chloroplasts from leaves of Populus deltoides. A high proportion of the chloroplasts appeared intact. The maximum rates of different photosynthetic processes were as follows: CO(2) fixation 3.5 micromoles per milligram chlorophyll per hour, noncyclic ATP synthesis 10 micromoles per milligram chlorophyll per hour, and cyclic ATP synthesis 300 micromoles per milligram chlorophyll per hour.