Interactions between aboveground and belowground induction of glucosinolates in two wild Brassica species

•  Interactions between shoot and root induction of glucosinolates in two crucifers, Brassica oleracea and B. nigra, were studied by applying the signalling hormones jasmonic acid (JA) and salicylic acid (SA). •  JA application increased total shoot glucosinolate levels 1.5-3 times, but total root l...

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Veröffentlicht in:The New phytologist. - 1979. - 161(2004), 3 vom: 20. März, Seite 801-810
1. Verfasser: Van Dam, Nicole M (VerfasserIn)
Weitere Verfasser: Witjes, Leontien, Svatoš, Aleš
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2004
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Brassica spp aboveground-belowground interactions glucosinolates induced defences jasmonic acid salicylic acid
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520 |a •  Interactions between shoot and root induction of glucosinolates in two crucifers, Brassica oleracea and B. nigra, were studied by applying the signalling hormones jasmonic acid (JA) and salicylic acid (SA). •  JA application increased total shoot glucosinolate levels 1.5-3 times, but total root levels did not increase. Only root JA-application yielded a systemic response. In B. oleracea it mattered where JA was applied: root application increased aliphatic glucosinolates in the shoot, whereas shoot application increased indole glucosinolates. Plants treated with JA to both organs had profiles similar to shoot-treated plants. SA-application did not disturb the organ-specific response to JA. Increases in glucosinolate levels did not reduce plant biomass. •  A applications reduced root glucosinolates in root-treated plants. SA root-application in B. nigra resulted in lesions on the leaves and shoot-application caused a trichome response. •  lants thus respond specifically, depending on the organ that is induced and the hormone that is applied. We find a large potential for root-feeders to affect shoot-feeders. Glucosinolate induction in one organ is not constrained by induction in the other organ 
650 4 |a Journal Article 
650 4 |a Brassica spp 
650 4 |a aboveground-belowground interactions 
650 4 |a glucosinolates 
650 4 |a induced defences 
650 4 |a jasmonic acid 
650 4 |a salicylic acid 
700 1 |a Witjes, Leontien  |e verfasserin  |4 aut 
700 1 |a Svatoš, Aleš  |e verfasserin  |4 aut 
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