Screening of oxylipins for control of oilseed rape (Brassica napus) fungal pathogens

Granér, Georg; Hámberg, Mats; Meijer, Johan

doi:10.1016/s0031-9422(02)00724-0

Cited by 46 publications

(38 citation statements)

References 21 publications

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“…Plant cell death-promoting effects have been demonstrated for fatty acid hydroperoxides and ketols (12,38), whereas protective effects against cell death have been reported for hydroxides formed by the LOX as well as the DOX pathway (23). Finally, several different oxylipins possess direct anti-pathogenicity against different phytopathogenic bacteria and fungi (39,40). The sheer amount of arabidopside E (7-8% of the total acyl lipid content) formed after AvrRpm1 recognition suggests a function beyond the mere scavenging of overproduced OPDA.…”

Section: Discussionmentioning

confidence: 99%

Oxylipin Profiling of the Hypersensitive Response inArabidopsis thaliana

et al. 2006

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Section: Discussionmentioning

confidence: 99%

Oxylipin Profiling of the Hypersensitive Response inArabidopsis thaliana

et al. 2006

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“…Oilseed Brassica species are also an important commodity in the world economy, as they are an important source of nutrition in developing countries (Rana, 2005). Amidst oilseed brassicas, oilseed rape has become a major crop in Europe, and one of the significant oil crops worldwide (Graner et al, 2003;Dubuis et al, 2005). The rapeseed and rapeseed oil production in 2007 from different countries that ranked in the first twelve worldwide are listed in Table I.…”

Section: The Origin and Excellence Of "Brassicas"mentioning

confidence: 99%

Defence mechanisms of Brassicaceae: implications for plant-insect interactions and potential for integrated pest management. A review

Ahuja

Rohloff

Bones

2010

Agron. Sustain. Dev.

212

165

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-Brassica crops are grown worldwide for oil, food and feed purposes, and constitute a significant economic value due to their nutritional, medicinal, bioindustrial, biocontrol and crop rotation properties. Insect pests cause enormous yield and economic losses in Brassica crop production every year, and are a threat to global agriculture. In order to overcome these insect pests, Brassica species themselves use multiple defence mechanisms, which can be constitutive, inducible, induced, direct or indirect depending upon the insect or the degree of insect attack. Firstly, we give an overview of different Brassica species with the main focus on cultivated brassicas. Secondly, we describe insect pests that attack brassicas. Thirdly, we address multiple defence mechanisms, with the main focus on phytoalexins, sulphur, glucosinolates, the glucosinolate-myrosinase system and their breakdown products. In order to develop pest control strategies, it is important to study the chemical ecology, and insect behaviour. We review studies on oviposition regulation, multitrophic interactions involving feeding and host selection behaviour of parasitoids and predators of herbivores on brassicas. Regarding oviposition and trophic interactions, we outline insect oviposition behaviour, the importance of chemical stimulation, oviposition-deterring pheromones, glucosinolates, isothiocyanates, nitriles, and phytoalexins and their importance towards pest management. Finally, we review brassicas as cover and trap crops, and as biocontrol, biofumigant and biocidal agents against insects and pathogens. Again, we emphasise glucosinolates, their breakdown products, and plant volatile compounds as key components in these processes, which have been considered beneficial in the past and hold great prospects for the future with respect to an integrated pest management.Brassicas / insect pests / chemical ecology / trophic levels / glucosinolates / isothiocyanates / defence mechanisms / biocontrol / trap crops / integrated pest management

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“…Thus, 13-HPOT and 13-HOT (Graner et al, 2003), colneleic acid and colnelenic acid (CL and CLn;Weber et al, 1999), as well as several epoxy-or polyhydroxylated fatty acids (Blée, 1998) were described as antifungal or antioomycete compounds, while cis-3-hexenol and trans-2-hexenal (2-hexenal) were able to strongly reduce growth of Pseudomonas in vitro (Croft et al, 1993). Contribution of the oxylipin pathway to plant defense can also proceed from production of signal molecules inducing defense gene expression or regulating localized cell death, a powerful plant defense mechanism against pathogens known as the hypersensitive response (La Camera et al, 2004).…”

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confidence: 94%

Evaluation of the Antimicrobial Activities of Plant Oxylipins Supports Their Involvement in Defense against Pathogens

et al. 2005

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Plant oxylipins are a large family of metabolites derived from polyunsaturated fatty acids. The characterization of mutants or transgenic plants affected in the biosynthesis or perception of oxylipins has recently emphasized the role of the so-called oxylipin pathway in plant defense against pests and pathogens. In this context, presumed functions of oxylipins include direct antimicrobial effect, stimulation of plant defense gene expression, and regulation of plant cell death. However, the precise contribution of individual oxylipins to plant defense remains essentially unknown. To get a better insight into the biological activities of oxylipins, in vitro growth inhibition assays were used to investigate the direct antimicrobial activities of 43 natural oxylipins against a set of 13 plant pathogenic microorganisms including bacteria, oomycetes, and fungi. This study showed unequivocally that most oxylipins are able to impair growth of some plant microbial pathogens, with only two out of 43 oxylipins being completely inactive against all the tested organisms, and 26 oxylipins showing inhibitory activity toward at least three different microbes. Six oxylipins strongly inhibited mycelial growth and spore germination of eukaryotic microbes, including compounds that had not previously been ascribed an antimicrobial activity, such as 13-keto-9(Z),11(E),15(Z)-octadecatrienoic acid and 12-oxo-10,15(Z)-phytodienoic acid. Interestingly, this first large-scale comparative assessment of the antimicrobial effects of oxylipins reveals that regulators of plant defense responses are also the most active oxylipins against eukaryotic microorganisms, suggesting that such oxylipins might contribute to plant defense through their effects both on the plant and on pathogens, possibly through related mechanisms.

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Screening of oxylipins for control of oilseed rape (Brassica napus) fungal pathogens

Cited by 46 publications

References 21 publications

Oxylipin Profiling of the Hypersensitive Response inArabidopsis thaliana

Oxylipin Profiling of the Hypersensitive Response inArabidopsis thaliana

Defence mechanisms of Brassicaceae: implications for plant-insect interactions and potential for integrated pest management. A review

Evaluation of the Antimicrobial Activities of Plant Oxylipins Supports Their Involvement in Defense against Pathogens

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