Relationship between secondary metabolism changes in cassava root tissue and physiological deterioration

By:

URITANI, I

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Material type: Article

ArticleLanguage: English Description: 47(7):1591-1598Subject(s): LOC classification:

19562

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In: Agricultural and Biological ChemistrySummary: During the storage of cassava roots under room conditions, coumarins and phenols were produced and the activities of phenylalanine ammonialyase and peroxidase were activated in every part of the parenchymatous tissue, namely the outermost tissue (called the A-part), the intervening tissue (called the (B-part), and the innermost tissue (called the C-part), in parallel with the occurrence of physiological deterioration in the B-part. In many cases, secondary metabolites were produced more strongly in the B- part than in the A- and C-parts. Parenchymatous tissue blocks were divided into the A-, B-, and C-parts and they were separately incubated, together with undivided parenchymatous tissue blocks. In both cases, metabolic changes occurred in the A-, B-, and C-parts and physiological deterioration was induced only in the B-part. The possible mechanism of physiological deterioration occurrence is discussed. (AS)

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Item type	Current library	Collection	Call number	Copy number	Status	Date due	Barcode	Item holds
Online Document	CIAT Library Web	Electronic Document	19562 (Browse shelf(Opens below))		Not For Loan (Restricted Access)
Journal Article	CIAT Library Document collection CINFOS	Document Collection CINFOS	19562 (Browse shelf(Opens below))	c.1	Short Loan		100070499

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During the storage of cassava roots under room conditions, coumarins and phenols were produced and the activities of phenylalanine ammonialyase and peroxidase were activated in every part of the parenchymatous tissue, namely the outermost tissue (called the A-part), the intervening tissue (called the (B-part), and the innermost tissue (called the C-part), in parallel with the occurrence of physiological deterioration in the B-part. In many cases, secondary metabolites were produced more strongly in the B- part than in the A- and C-parts. Parenchymatous tissue blocks were divided into the A-, B-, and C-parts and they were separately incubated, together with undivided parenchymatous tissue blocks. In both cases, metabolic changes occurred in the A-, B-, and C-parts and physiological deterioration was induced only in the B-part. The possible mechanism of physiological deterioration occurrence is discussed. (AS)