Time Course and Spatial Distribution of Phenylalanine Ammonia-Lyase and Peroxidase Activity in Wounded Potato Tuber Tissue

The time course and spatial distribution of wound-induced activities of phenylalanine ammonia-lyase and peroxidase were determined to establish correlations between molecular and cellular aspects of the wound-induced pattern of cell differentiation in potato (Solanum tuberosum L.) tissue. A high cor...

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Bibliographic Details
Published inPlant physiology (Bethesda) Vol. 62; no. 5; pp. 789 - 793
Main Author Borchert, Rolf
Format Journal Article
LanguageEnglish
Published United States American Society of Plant Physiologists 01.11.1978
Subjects
Biochemistry
Cell differentiation
Cell walls
Cellular differentiation
Enzymes
Gels
Spatial distribution
Starches
Suberization
Tubers
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Summary:The time course and spatial distribution of wound-induced activities of phenylalanine ammonia-lyase and peroxidase were determined to establish correlations between molecular and cellular aspects of the wound-induced pattern of cell differentiation in potato (Solanum tuberosum L.) tissue. A high correlation between peroxidase activity and suberization was observed. Peroxidase activity increased for several days after wounding. Peroxidase content of suberizing cells was more than 10 times higher than that of the immediately adjacent dividing cells. Suberizing and dividing cells contained different isoperoxidases. Neither time course nor spatial distribution of the wound-induced activity of phenylalanine ammonia-lyase was directly correlated with the wound-induced pattern of cell differentiation.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0032-0889
1532-2548
DOI:10.1104/pp.62.5.789