DIFFERENTIAL-EFFECTS OF LIGHT AND FUNGAL ELICITOR ON CHLOROGENIC ACID AND CAFFEOYLSHIKIMIC ACID METABOLISM

被引：12

作者：

KOCH, U ^{[1
]}

KUHNL, T ^{[1
]}

CONRADT, W ^{[1
]}

WELLMANN, E ^{[1
]}

机构：

[1] UNIV FREIBURG,INST BIOL 2,SCHANZLESTR 1,W-7800 FREIBURG,GERMANY

来源：

PLANT SCIENCE | 1990年 / 70卷 / 02期

关键词：

caffeoylshimikic acid; carrot (Daucus carrota L.); chlorogenic acid; d-quinate hydroxycinnamoyl transferase; differential effects of light and fungal elicitor; hydroxycinnamoyl-CoA; shikimate hydroxycinnamyl trasferase;

D O I：

10.1016/0168-9452(90)90130-G

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Upon irradiation an increase in the extractable activity of hydroxycinnamoyl-CoA:d-quinate hydroxycinnamoyl transferase (CQT) and a decrease in the activity of hydroxycinnamoyl-CoA:shikimate hydroxycinnamoyl transferase (CST) was observed in cell suspension cultures and seedling of carrot (Daucus carota L). Conversely, CST was induced and CQT repressed in the cell cultures upon treatment with fungal elicitor (i.e. cell wall preparations from Phytophthora megasperma). In the cell cultures irradiation led to a continuous accumulation of 5-O-caffeoyl-d-quinic (chlorogenic) acid, while a transient accumulation of 5-O-caffeoylshikimic acid took place in response to elicitor treatment. Cell wall bound 4-hydroxybenzoic, 4-coumaric and also ferulic acid were increased after treatment with Pmg elicitor. These wall bound phenolics may be involved in protection against microbil attack. © 1990.

引用

页码：167 / 174

页数：8

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