EFFECTS OF WOUNDING ON GLUCOSINOLATES IN THE COTYLEDONS OF OILSEED RAPE AND MUSTARD

被引:169
作者
BODNARYK, RP
机构
[1] Agriculture Canada Research Station, Winnipeg, Man. R3T 2M9
关键词
BRASSICA; SINAPIS; BRASSICACEAE; PHYLLOTRETA; GLUCOSINOLATE; WOUND-INDUCED RESISTANCE; FLEA BEETLE;
D O I
10.1016/0031-9422(92)83609-3
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
Mechanical wounding or feeding by the flea beetle, Phyllotreta cruciferae, caused the concentration of indole glucosinolates (3-indolylmethyl and 4-hydroxy-3-indolylmethyl) in the cotyledons of one-week-old seedlings of the oilseed rapes Brassica napus and B. rapa and the mustard B. juncea, to increase as much as three-fold. In B. napus, a single bout of wounding in one cotyledon produced a signal that caused the concentration of 3-indolylmethyl glucosinolate to increase in the unwounded cotyledon, in the first true leaves (seven days after cotyledon wounding) but not in the second true leaves (14 days after cotyledon wounding). Severity of wounding, split versus simultaneous wounding, light intensity and sulphate nutrition also affected wound-induced change in the concentration of this indole glucosinolate. The concentration of aliphatic and aromatic glucosinolates in the mustards, B. juncea (allyl) and Sinapis alba (p-hydroxybenzyl) were unchanged in wounded cotyledons. No correlation was found between wound-induced resistance against the flea beetle Phyllotreta cruciferae and the presence, absence or change in any glucosinolate in the cotyledons of these species.
引用
收藏
页码:2671 / 2677
页数:7
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