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KMID : 0903619830240030228
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Journal of the Korean Society for Horticultural Science
1983 Volume.24 No. 3 p.228 ~ p.235
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Mobilization of Protein and Soluble Nitrogen during Regrowth of Tulip Trees (Liriodendron tulipifera L .)
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Abstract
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The regrowth in the spring is characterized by the mobilization of reserves from the storage tissue and the transfer or solubilized derivatives to the grow ing parts. The proteins and amino acids were shown to change greatly during early stage of regrowth. The proteins contributed the greater part of the storage nitrogen decreased at the beginning of growth. On the other hand, the amino acids in the bark increased proportionately to the decreased protein. At 30℃, the increasing rate of amino acids in the bark of tulip trees $quot;(Liriodendron tulipifera L.) was higher then that of 20℃. The content of amino acid in intact shoots increased much as compared with the shoots of which buds were excised. The content of protein itt intact shoots at 30℃ decreased more rapidly than those of excised shoots at 30℃, indicating that it was influenced by the regulator which may be presented in buds and by the higher temperature. All three groups of protein I. II and III which were separated with diethylaminoethyl (DEAE) -cellulose column chromatography deceased rapidly after onset of sprouting. Polyacrylamide get electrophoresis of proteins at the dormant and beginning of growth stage exhibited the changes of the protein, showing the shift of protein peaks from higher to lower molecular weight ranges.
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