Defence Mechanisms of Brassicaceae: Implications for Plant-Insect Interactions and Potential for Integrated Pest Management

Ahuja, Ishita; Rohloff, Jens; Bones, Atle M.

doi:10.1007/978-94-007-0394-0_28

Cited by 46 publications

(47 citation statements)

References 283 publications

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“…Sarfraz et al 2009a, b; but see Gols et al 2008). Although most studies investigating the effects of plant chemistry on tritrophic interactions focus on host location by natural enemies, an increasing number are examining the negative effects of induced plant chemicals on higher trophic levels (Ode 2006;Ahuja et al 2010). The tritrophic aspects of plant chemistry, especially compounds associated with induced resistance, have direct implications for the compatibility of biological control and plant resistance approaches to the control of insect pests (Ode 2006).…”

Section: Discussionmentioning

confidence: 97%

The effects of a plant defence priming compound, β-aminobutyric acid, on multitrophic interactions with an insect herbivore and a hymenopterous parasitoid

et al. 2011

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Biocontrol of aphids by natural enemies is utilized in many organic and integrated pest management schemes. b-aminobutyric acid (BABA), a non-protein amino acid, is a plant defence primer that suppresses growth of some insect herbivores when applied as a root drench. This investigation examined how applying BABA to host plants via the roots may impact on a parasitoid wasp of aphids. Female Aphidius ervi (Haliday) did not discriminate against pea aphids (Acyrthosiphon pisum (Harris)) reared on BABA-treated beans (Vicia faba L.) or show any modified responses to volatiles released from BABA-treated plants. BABA reduced the size of emerging wasps, primarily by inhibiting the growth of the host aphid. Metabolomic analysis revealed BABA in both aphids and emergent wasps indicating some potential for direct physiological inhibition to have occurred. Survival of the parasitoids was only reduced at doses of BABA likely to produce phytotoxic effects in many plant species, thus there may be potential to incorporate plant defence primers like BABA into integrated pest management practices. However, the precise mechanisms of BABA-inhibition of insects still require elucidation.

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Section: Discussionmentioning

confidence: 97%

The effects of a plant defence priming compound, β-aminobutyric acid, on multitrophic interactions with an insect herbivore and a hymenopterous parasitoid

et al. 2011

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“…The defining feature of glucosinolate-producing plants is the cellular compartmentalization of glucosinolates and their hydrolyic enzymes, the myrosinases (also called thioglucoside glucohydrolase [TGG]) (Kissen et al, 2009; Ahuja et al, 2010). Normally in Arabidopsis , glucosinolates and myrosinases are synthesized and stored separately in adjacent cells termed S-cells and myrosin cells, respectively, at the leaf periphery and along veins (Andréasson et al, 2001; Husebye et al, 2002; Ueda et al, 2006; Shroff et al, 2008; Koroleva et al, 2010).…”

Section: Developmental Pathway Regulationmentioning

confidence: 99%

Regulation of plant secondary metabolism and associated specialized cell development by MYBs and bHLHs

2016

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Plants are unrivaled in the natural world in both the number and complexity of secondary metabolites they produce, and the ubiquitous phenylpropanoids and the lineage-specific glucosinolates represent two such large and chemically diverse groups. Advances in genome-enabled biochemistry and metabolomic technologies have greatly increased the understanding of their metabolic networks in diverse plant species. There also has been some progress in elucidating the gene regulatory networks that are key to their synthesis, accumulation and function. This review highlights what is currently known about the gene regulatory networks and the stable sub-networks of transcription factors at their cores that regulate the production of these plant secondary metabolites and the differentiation of specialized cell types that are equally important to their defensive function. Remarkably, some of these core components are evolutionarily conserved between secondary metabolism and specialized cell development and across distantly related plant species. These findings suggest that the more ancient gene regulatory networks for the differentiation of fundamental cell types may have been recruited and remodeled for the generation of the vast majority of plant secondary metabolites and their specialized tissues.

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“…In Brassica napus and Sinapis alba seeds, myrosinase is found in myrosin cells in the form of watersoluble myrosin grains located in protein storage bodies in cotyledons and in the embryonic axis (Bones et al, 1991). Plant myrosinases and glucosinolates are synthesized and stored separately in adjacent cells termed myrosin cells and S-cells, respectively (Eriksson et al, 2002;Kissen et al, 2009;Ahuja et al, 2010). During predation or unnatural cell breakage, myrosinase can hydrolyze glucosinolate from damaged plant tissues yielding a glucose molecule and an unstable glucone.…”

Section: Introductionmentioning

confidence: 99%

Myrosin Idioblast Cell Fate and Development Are Regulated by theArabidopsisTranscription Factor FAMA, the Auxin Pathway, and Vesicular Trafficking

Sack

2014

The Plant Cell

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Crucifer shoots harbor a glucosinolate-myrosinase system that defends against insect predation. Arabidopsis thaliana myrosinase (thioglucoside glucohydrolase [TGG]) accumulates in stomata and in myrosin idioblasts (MIs). This work reports that the basic helix-loop-helix transcription factor FAMA that is key to stomatal development is also expressed in MIs. The loss of FAMA function abolishes MI fate as well as the expression of the myrosinase genes TGG1 and TGG2. MI cells have previously been reported to be located in the phloem. Instead, we found that MIs arise from the ground meristem rather than provascular tissues and thus are not homologous with phloem. Moreover, MI patterning and morphogenesis are abnormal when the function of the ARF-GEF gene GNOM is lost as well as when auxin efflux and vesicular trafficking are chemically disrupted. Stomata and MI cells constitute part of a wider system that reduces plant predation, the so-called "mustard oil bomb," in which vacuole breakage in cells harboring myrosinase and glucosinolate yields a brew toxic to many animals, especially insects. This identification of the gene that confers the fate of MIs, as well as stomata, might facilitate the development of strategies for engineering crops to mitigate predation.

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Defence Mechanisms of Brassicaceae: Implications for Plant-Insect Interactions and Potential for Integrated Pest Management

Cited by 46 publications

References 283 publications

The effects of a plant defence priming compound, β-aminobutyric acid, on multitrophic interactions with an insect herbivore and a hymenopterous parasitoid

The effects of a plant defence priming compound, β-aminobutyric acid, on multitrophic interactions with an insect herbivore and a hymenopterous parasitoid

Regulation of plant secondary metabolism and associated specialized cell development by MYBs and bHLHs

Myrosin Idioblast Cell Fate and Development Are Regulated by theArabidopsisTranscription Factor FAMA, the Auxin Pathway, and Vesicular Trafficking

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