Document Detail

Hydroxycinnamic acids and their dimers involved in the cessation of cell elongation in mentha suspension culture.
MedLine Citation:
PMID:  10993141     Owner:  NLM     Status:  MEDLINE    
The contents of wall-bound hydroxycinnamic acids and their dimers were compared between elongated and non-elongated cells of suspension-cultured Mentha. Wall-bound peroxidase activity was also investigated. The main hydroxycinnamic acids esterified to these two kinds of cell walls were ferulic and caffeic acids. Eleven dehydrodicaffeic acid isomers and six dehydrodiferulic acid isomers formed through C-C and C-O-C coupling processes, were detected by GC-MS from the extracts released from the walls of non-elongated cells. On the other hand, only four dehydrodicaffeic acid isomers and three dehydrodiferulic acid isomers were found in the walls of elongated cells. Amounts of monomers of ferulic and caffeic acids and their 5,5'-dehydrodimers in non-elongated cell walls were about ten and twenty times higher, respectively, than those in the elongated cell walls. There was a close correlation between the amount of 5,5'-dehydrodimers and activity of wall-bound peroxidase in non-elongated and elongated cells. The level of 5,5'-dehydrodimers accumulated at a higher rate than monomers in non-elongated cell walls. These results suggest that the dimerization of ester-linked ferulic and caffeic acids by peroxidase and the increase in amounts of their 5,5'-dehydrodimers are important factors in the cessation of cell elongation in Mentha suspension culture.
J G Yang; T Uchiyama
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Bioscience, biotechnology, and biochemistry     Volume:  64     ISSN:  0916-8451     ISO Abbreviation:  Biosci. Biotechnol. Biochem.     Publication Date:  2000 Aug 
Date Detail:
Created Date:  2001-02-05     Completed Date:  2001-02-08     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9205717     Medline TA:  Biosci Biotechnol Biochem     Country:  JAPAN    
Other Details:
Languages:  eng     Pagination:  1572-9     Citation Subset:  IM    
Graduate School of Science and Technology, Niigata University, Ikarashi, Japan.
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MeSH Terms
Caffeic Acids
Cell Wall / enzymology
Coumaric Acids / metabolism*
Gas Chromatography-Mass Spectrometry
Lamiaceae / cytology*,  metabolism
Reg. No./Substance:
0/Caffeic Acids; 0/Coumaric Acids; 1135-24-6/ferulic acid; 331-39-5/caffeic acid

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