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. 2007 Jul;2(4):282-3.
doi: 10.4161/psb.2.4.4014.

Contribution of glucosinolate transport to Arabidopsis defense responses

Bryan Lj Ellerbrock  1 , Jae Hak Kim, Georg Jander
Affiliations

Contribution of glucosinolate transport to Arabidopsis defense responses

Bryan Lj Ellerbrock et al. Plant Signal Behav. 2007 Jul.

Abstract

Accumulation of glucosinolates, a class of defense-related secondary metabolites found almost exclusively in the Capparales, is induced in response to a variety of biological stresses. It is often assumed that elevated glucosinolate levels result from de novo biosynthesis, but glucosinolate transport from other parts of the plant to the site of herbivory or pathogen infection can also contribute to the defense response. Several studies with Arabidopsis and other crucifers have demonstrated that glucosinolates from vegetative tissue are transported to developing seeds. Here we discuss evidence that long-chain aliphatic glucosinolates are transported to the site of herbivory in response to Myzus persicae (green peach aphid) feeding on Arabidopsis.

Keywords: Arabidopsis; Myzus persicae; aphid; glucosinolate; graft; transport.

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Figures

Figure 1
Figure 1
(A) 8-methylsulfinyloctlyglucosinolate (8MSO) content as a percentage of total glucosinolates in the whole plant, phloem sap, and aphid honeydew. Mean ± st. dev. (B) Close-up view of an Arabidopsis flower stalk graft with a plastic sleeve holding the stock and scion together. The white arrow indicates the graft junction. (C) Seed 8MSO content (nMol/mg) in reciprocally grafted Ler wild type and line 7277 mutant plants. Mean ± st. dev. of N = 6 to 9.
See this image and copyright information in PMC

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