Diurnal variation of asparaginase in developing pea leaves |
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Authors: | Sieciechowicz K Ireland R J Joy K W |
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Institution: | Department of Biology, Carleton University, Ottawa, Ontario, Canada K1S 5B6. |
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Abstract: | Levels of asparaginase activity from developing pea leaves (Pisum sativum) were found to change on a daily basis, increasing during the light period and decreasing in the dark. During extended periods of light, high levels of activity were maintained, while prolonged dark reduced activity to a low value. Half-expanded leaves exhibited the greatest change in activity over the photoperiod. Very young or mature leaves displayed little or no diurnal variation in asparaginase activity. |
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