Chlorophyll Degradation by Peroxidase in Parsley Leaves

Regulated Chlorophyll Degradation in Spinach Leaves during Storage

Degradation of chlorophyll in spinach (Spinacia olearacea L. cv. Hybrid 612) appeared to be regulated through the peroxidase-hydrogen peroxide pathway, which opens the porphyrin ring, thus resulting in a colorless compound. This conclusion was arrived at from the analysis of chlorophylls (Chls) and their metabolizes by HPLC and of enzyme activities catalyzing the degradative reactions. Chls dec...

Chlorophyll Degradation.

Although the loss of green color in senescent leaves and ripening fruits is a spectacular natural phenomenon, research on chlorophyll breakdown has been largely neglected until recently. This review summarizes knowledge about the fate of chlorophyll in degreening tissues that has been gained during the past few years. Structures of end- and intermediary products of degradation as well as the bi...

Chlorophyll Breakdown in Senescent Leaves.

The biosynthetic pathway of Chl, probably the most important pigment in the biosphere, has been studied in considerable detail and is mentioned in plant physiology textbooks. Oddly enough, however, the breakdown of Chl is barely mentioned. Yet, as pointed out by Hendry et al. (1987), an estimated one billion tons of Chl are broken down every year, seemingly without leaving a trace. The only enz...

Involvement of chloroplast peroxidase on chlorophyll degradation in postharvest broccoli 1 florets and its control

Injury in Intact Leaves, as Detected by Chlorophyll Fluorescence

Z. Naturforsch. 43c, 269-274 (1988); received December 7, 1987 Chlorophyll Fluorescence, S02 , Spinach, Intact Leaves, Calvin Cycle The effects of short-time fumigation (0-60 min) of intact spinach leaves with S02 (2 ppm) on the photosynthetic apparatus were investigated. A rather high S02 concentration was applied to monitor immediate effects on the fluorescence behaviour with the influence of...