Journal
BIOTECHNOLOGY LETTERS
Volume 29, Issue 3, Pages 495-499Publisher
SPRINGER
DOI: 10.1007/s10529-006-9248-7
Keywords
Dendrobium huoshanense; polysaccharides; protocorm-like bodies; putrescine
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Putrescine at 0.6 mM stimulated protocorm-like body growth and polysaccharide synthesis in suspension cultures of Dendrobium huoshanense. The specific growth rate of protocorm-like body increased from 0.047 to 0.056 day(-1), and the maximum dry weight and polysaccharide production reached 33.2 and 2.94 g l(-1), respectively, while they were 24.6 and 2.12 g l(-1), respectively, in the control. The administration of polyamine inhibitor, alpha-DL-difluoromethylarginine, at 1 mM, decreased protocorm-like body growth and polysaccharide production to 21.4 and 1.76 g l(-1), respectively.
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