Title: Effect of peroxidase location in cell wall on lignification progress of secondary xylem cell of Populus tomentosa Carr.
Abstract:In this paper,the relationship between lignification progress and peroxidase(POD) locations in secondary xylem cell of Populus tomentosa Carr.was analyzed on the basis of cytochemistry localization an...In this paper,the relationship between lignification progress and peroxidase(POD) locations in secondary xylem cell of Populus tomentosa Carr.was analyzed on the basis of cytochemistry localization and TEM observation of POD.POD was mainly distributed in the radial walls of the cambial cells and expanding xylem cell,especially at the corner of cell wall and cell wall close to the primary pit field.POD was occurred apparently at the middle lamella,and then their signals extended rapidly from the middle lamella at the cell wall corner to S_1 layer with S_1 layer deposition.But the increase of POD activity did not occur from S_1 to S_2 in turn.The present results indicated that POD had participated in the lignification.However,the distribution of POD was not same as the regions of lignin deposition completely.This therefore suggested that it was probably different components of POD isozyme with specific functions that distributed within the different cell regions at different stages in differentiation process.Read More
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: article
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Cited By Count: 2
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