The Capacity of Leaves of Bryophyllum calycinum to Recover from Prolonged Exposure to Darkness or to Light.
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چکیده
منابع مشابه
The Behavior of Isocitric Acid in Excised Leaves of Bryophyllum Calycinum During Culture in Alternating Light and Darkness.
In an earlier study of the diurnal variation of organic acids and starch in excised leaves of Bryophyllum calycinum (3), it was observed that the quantity of isocitric acid present did not change significantly during a threeday period of culture in water under greenhouse conditions of illumination. Because of the contrast between the behavior of this substance and that of malic and citric acids...
متن کاملThe behavior of the organic acids and starch of Bryophyllum leaves during culture in continuous light.
When leaves of’ Bryophyllum calycinum are picked at daybreak and cultured in water in darkness, certain changes in composition occur that are not observed in such leaves when they are exposed to the normal diurnal alternation of light and darkness. In effect the leaves are exposed t’o a night period of abnormal length and the stresses that are thus set up give rise to reactions the ultimate phy...
متن کاملAn endogenous rhythm in the rate of carbon dioxide output of Bryophyllum. IV. Effect of intensity of illumination on entrainment of the rhythm by cycles of light & darkness.
Excised leaves of the succulent plant Bryophyllum fedtschenkoi show an endogenous circadian rhythm in their rate of carbon dioxide emission (17,18). The rhythm occurs when leaves kept at a constant temperature and in an air stream initially free from carbon dioxide are transferred from light to prolonged darkness. The entrainment of the basic oscillating system in Bryophyllum leaf cells by vari...
متن کاملStudies in the Metabolism of Crassulacean Plants: the Effect of Temperature upon the Culture of Excised Leaves of Bryophyllum Calycinum.
When Bryophyllum calycimum leaves are detached from the plant and cultured in water in darkness at ordinary room temperature, the course of the changes in composition with respect to the organic acids, the protein and the starch depends upon the time of day at which the samples were collected (5). If leaves are taken in the afternoon at a time of low acidity and low protein content, there is a ...
متن کاملThe Position of C in Sunflower Leaf Metabolites after Exposure of Leaves to Short Period Photosynthesis and Darkness in an Atmosphere of Co(2).
The rate at which assimilated carbon dioxide is distributed in the carbon atoms of plant sugars and other plant metabolites should provide indication of the interrelationships between the sugars and these substances after exposure of the plant to carbon dioxide in the light and in the dark. WOOD and BURR (9) were the first to determine the distribution of isotopic carbon in the carbohydrates of...
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ورودعنوان ژورنال:
- Plant physiology
دوره 31 6 شماره
صفحات -
تاریخ انتشار 1956