Involvement of uncoupled antenna chlorophylls in photoinhibition in thylakoids.
Evidence is presented, by means of both fluorescence and action spectroscopy, that a small, spectroscopically heterogeneous population of both Chl a and Chl b molecules is present in isolated spinach thylakoids and is active in photoinhibition. The broadness of the action spectrum suggests that degraded or incompletely assembled pigment-protein complexes may be involved.
Santabarbara
S
S
Centro C.N.R. Biologia Cellulare e Molecolare delle Piante, Dipartamento de Biologia, Universitá di Milano, Via Celoria 26, 20133 Milan, Italy.
Neverov
K V
KV
Garlaschi
F M
FM
Zucchelli
G
G
Jennings
R C
RC
D002734:Chlorophyll / Q000378:metabolism*; D000077194:Chlorophyll A; D008027:Light; D045342:Light-Harvesting Protein Complexes; D013058:Mass Spectrometry; D045322:Photosynthetic Reaction Center Complex Proteins / Q000378:metabolism*; D018515:Plant Leaves / Q000378:metabolism / Q000502:physiology*; D013050:Spectrometry, Fluorescence; D018724:Spinacia oleracea / Q000378:metabolism / Q000502:physiology*; D020524:Thylakoids / Q000378:metabolism / Q000502:physiology*
D045342:Light-Harvesting Protein Complexes; D045322:Photosynthetic Reaction Center Complex Proteins; D002734:Chlorophyll; C037184:chlorophyll b; D000077194:Chlorophyll A