Effect of Leaf Detachment on Chlorophyll Fluorescence during Chilling Experiments | Zendy

Catherine Potvin | Zendy

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Effect of Leaf Detachment on Chlorophyll Fluorescence during Chilling Experiments

Author(s) -

Catherine Potvin

Publication year - 1985

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.78.4.883

Subject(s) - chlorophyll fluorescence , phaseolus , chlorophyll , chloroplast , cucumis , biology , photosystem ii , photosynthesis , botany , chlorophyll a , fluorescence , horticulture , chemistry , biochemistry , physics , quantum mechanics , gene

The effect of leaf detachment on chlorophyll fluorescence was analyzed for Zea mays, Cucumis sativus, Phaseolus vulgaris, and Echinochloa crus-galli. Results clearly indicate that detachment hastens the decrease in chlorophyll fluorescence during the course of chilling experiments. For maize and bean, the activity of photosystem II of chloroplasts isolated from detached leaves is lower than that of chloroplasts isolated from attached leaves. There are also large differences in ionic loss between detached and attached leaves of barnyard grass which could correlate with changes in leaf water status. The detached leaves lost some 50% of their total ionic content. Finally, detachment alters the ranking of the species with regard to their chilling tolerance.

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