Chloroplast Biogenesis 34: SPECTROFLUOROMETRIC CHARACTERIZATION IN SITU OF THE PROTOCHLOROPHYLL SPECIES IN ETIOLATED TISSUES OF HIGHER PLANTS 1
AUTOR(ES)
Cohen, Charles E.
RESUMO
The fluorescence emission and excitation properties of protochlorophyll in etiolated cucumber (Cucumis sativus L.) cotyledons and primary bean (var. Red Kidney) leaves were characterized at 77 K. Contrary to previous studies, it appears that the short-wavelength protochlorophyll emission band consists of four fluorescent components, instead of only one nonphototransformable protochlorophyll. It was demonstrated that etiolated cucumber cotyledons synthesize and accumulate nontransformable protochlorophyll (E440, F630) as well as short-wavelength phototransformable protochlorophyll (E433, F633), (E444, F636), and (E445, F640). Long-wavelength phototransformable protochlorophyll (E450, F657) is also formed. In this context, E refers to the Soret excitation maxima and F refers to the red emission maxima of the protochlorophylls.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=425629Documentos Relacionados
- Chloroplast Biogenesis 31: DETECTION OF AN INHIBITOR OF PROTOCHLOROPHYLL BIOSYNTHESIS IN CUCUMBER COTYLEDONS 1
- Protochlorophyll Biosynthesis in a Cell-free System from Higher Plants 1
- Calvin cycle multienzyme complexes are bound to chloroplast thylakoid membranes of higher plants in situ.
- Nucleic Acid Determination in Storage Tissues of Higher Plants 1
- Experiments on the Biogenesis of the Pyridine Ring in Higher Plants. 12
