MODULATION OF THE ACTIVITY OF 2 HYDROXYCINNAMOYL TRANSFERASES IN WOUND-HEALING POTATO-TUBER DISCS IN RESPONSE TO PECTINASE OR ABSCISIC-ACID

被引：27

作者：

NEGREL, J

LOTFY, S

JAVELLE, F

机构：

[1] Laboratoire de Phytoparasitologie, INRA-CNRS, Station de Génétique et d'Amélioration des Plantes, Dijon

来源：

JOURNAL OF PLANT PHYSIOLOGY | 1995年 / 146卷 / 03期

关键词：

SOLANUM TUBEROSUM; ABSCISIC ACID; ARACHIDONIC ACID; JASMONIC ACID; PECTINASE; POTATO; SUBERIN; TYRAMINE; WOUNDING; WOUND-HEALING;

D O I：

10.1016/S0176-1617(11)82061-4

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The activity of two enzymes known to be involved in the biosynthesis of cell-wall phenolics in wound-healing potato tuber tissues was monitored in tuber discs treated with abscisic acid (ABA), pectinase, arachidonic acid, or jasmonic acid. Tyramine hydroxycinnamoyl transferase (THT) activity was strongly stimulated by pectinase and, to a lower extent, by ABA. By contrast, omega-hydroxypalmitic acid hydroxycinnamoyl transferase (HHT), which is a good marker of suberin biosynthesis, was induced by ABA, but not by pectinase treatments. Neither arachidonic acid, a known elicitor of phytoalexin biosynthesis in potato tubers, nor jasmonic acid, a putative intermediate in the signal transduction to wounding, significantly modified the time course or the intensity of induction of THT or HHT activities.

引用

页码：318 / 322

页数：5

共 23 条

[21] THE EFFECTS OF INFECTION BY PHYTOPHTHORA-INFESTANS ON THE CONTROL OF PHENYLPROPANOID METABOLISM IN WOUNDED POTATO TISSUE [J].