CHANGES IN PEROXIDASE-ACTIVITY ASSOCIATED WITH CELL-WALLS DURING PINE HYPOCOTYL GROWTH

被引：69

作者：

SANCHEZ, M

REVILLA, G

ZARRA, I

机构：

[1] Laboratorio de Fisiología Vegetal, Universidad de Santiago de Compostela, Santiago

来源：

ANNALS OF BOTANY | 1995年 / 75卷 / 04期

关键词：

CELL WALL; GROWTH; HYPOCOTYL; PEROXIDASE; PINE; PINUS PINASTER AITON;

D O I：

10.1006/anbo.1995.1039

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Peroxidases active against 2,2'-azino-bis-[3-ethylbenzthiazoline-6-acid] (ABTS) and guaiacol were found in the apoplastic fluid, as well as ionically and covalently associated with pine cell walls. The highest activity was found covalently bound to cell walls, while the lowest activity was in the apoplastic fluid. Both ABTS and guaiacol peroxidases increased with the hypocotyl age in the three fractions, apoplastic, ionically and covalently bound. Furthermore, the changes in both peroxidases along the hypocotyl were also studied. Both apoplastic ABTS- and guaiacol-peroxidases increased from the apical towards the basal region of the hypocotyls of 10-d-old seedlings. A relation between peroxidase activity in the apoplastic fluid and the cell wall stiffening in pine hypocotyls is proposed.

引用

页码：415 / 419

页数：5

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