Methyl Ester of p-Coumaric Acid: A Phytoalexin-Like Compound from Long English Cucumber Leaves

Daayf, Fouad; Bel-Rhlid, Rachid; Bélanger, Richard R.

doi:10.1023/b:joec.0000006419.22408.65

Cited by 108 publications

(82 citation statements)

References 22 publications

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“…Expression of these defense-related enzymes (such as PAL, POX, PPO, and LOX) are known to play a major role in determining the host resistance against various phytopathogens. These enzymes are either directly or indirectly involved in HR development (Rusterucci et al 1999), biosynthesis of cell wall strengthening material (lignin and suberin) and antimicrobial compounds (phytoalexins, furanocoumarin, quinones, and pterocarpan) (Mayer and Harel 1979;Daayf et al 1997), as also signaling molecules (Salicylic acid and Jasmonic acid) (Creelman and Mullet 1997;Hammerschmidt 1999). In the present study, chilli plants when sprayed with cerebrosides isolated from F. oxysporum induced H 2 O 2 accumulation, defense-related enzymes such as PAL, POX, PPO, LOX and also enhanced the accumulation of capsidiol and these results were correlated well with the decreased disease incidence compared to control.…”

Section: Discussionmentioning

confidence: 99%

Cerebroside mediated elicitation of defense response in chilli (Capsicum annuumL.) againstColletotrichum capsiciinfection

Jayapala

Hariprasad

Nayaka

et al. 2013

Journal of Plant Interactions

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Enhancing the host resistance by using naturally occurring elicitors derived from pathogenic organisms is emerging as an ecofriendly approach in plant disease management. Cerebrosides, categorized as glycosphingolipids, were isolated and partially purified from the wilt causing fungus (Fusarium oxysporum f. sp. lycopersici). Cerebroside treatment significantly reduced the anthracnose disease incidence under greenhouse conditions. Cerebroside elicitors were found to stimulate the early H 2 O 2 accumulation followed by the production of plant defense-related enzymes such as Phenylalanine ammonia lyase (PAL), Peroxidase (POX), Polyphenol oxidase (PPO), and Lipoxygenase (LOX) when applied to chilli (Capsicum annuum L.) plants by spray treatment and also induced the accumulation of capsidiol. Defense-related enzyme activities were increased by the elicitor treatment and an high level in activity was maintained during the experimental period. Under greenhouse conditions, the cerebroside elicitors effectively protected chilli plants against infection by anthracnose causing organism, Colletotrichum capsici.

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Section: Discussionmentioning

confidence: 99%

Cerebroside mediated elicitation of defense response in chilli (Capsicum annuumL.) againstColletotrichum capsiciinfection

Jayapala

Hariprasad

Nayaka

et al. 2013

Journal of Plant Interactions

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“…Pleurotus ostreatus growth was inhibited (approximately 80%) with a final concentration of 500 ppm from all extractive samples. Previous studies have shown that oleuropein, hydroxytyrosol, tyrosol, benzoic acid, p-coumaric acid, and catechin exhibit good antifungal or antibacterial activity (Daayf et al 1997;Bisignano et al 1999;Amborabe et al 2002;Friedman 2007;Yangui et al 2010). Protocatechic acid is also an antioxidant (Li et al 2011).…”

Section: Resultsmentioning

confidence: 99%

Chemical Contents and Antifungal Activity of Some Durable Wood Extractives vs. Pleurotus ostreatus

et al. 2015

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The total phenolic content (TPC), total flavonoid content (TFC), phenolic compounds, and antifungal activity of olive (Olea europaea var. sylvestris) and juniper (Juniperus foetidissima) sapwood and heartwood extractives were examined. The extractives were obtained using methanol solvents. The different compounds in extractives were identified and quantified. The antifungal activities of different parts of the olive and juniper wood extractives were determined in vitro. Pleurotus ostreatus mycelium was used for the antifungal activity experiment. Extractive compounds obtained from olive and juniper woods were found to be effective, natural antifungal agents.

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“…Expression of these defense related enzymes (PAL, POX, PPO and LOX) are known to play a major role in determining the host resistance against various phytopathogens. These enzymes are either directly or indirectly involved in hypersensitive reaction (HR) development (Rusterucci et al, 1999), biosynthesis of cell wall strengthening material (lignin and suberin) and anti-microbial compounds (phytoalexins, furanocoumarin, quinines and pterocarpan) (Daayf et al, 1997), as also signalling molecules (salicylic acid and jasmonic acid) (Creelman and Mullet, 1997;Hammerschmidt, 1999).…”

Section: Discussionmentioning

confidence: 99%

Enhancement of the expression of defense genes in tomato against Ralstonia solanacearum by N-octanoyl-L-homoserine lactone

Jayanna¹,

Umesha²

2017

Afr. J. Microbiol. Res.

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Many Gram-negative bacteria use N-acyl-homoserine lactone (AHLs) as quorum sensing (QS) signalling molecules to monitor their population density and to regulate gene expression in a density dependent manner. Recently, it has been shown that AHLs are detected by the plants and they trigger plant defense responses. In this study, N-octanoyl-L-homoserine lactone (C8-HSL) has been used as resistant inducer against bacterial wilt disease of tomato caused by Ralstonia solanacearum. The present investigation focused on the role of defense related enzymes (phenylalanine ammonia lyase, peroxidase, polyphenol oxidase and lipoxygenase) in imparting resistance in tomato against R. solanacearum. Activities of these defense enzymes, increased in C8-HSL treated tomato plants, which were challenged with R. solanacearum. The transcripts accumulation studies for these enzymes were carried out using semi-quantitative reverse transcription PCR, with maximum mRNA accumulation in resistant cultivar upon treatment with C8-HSL. Quantitative real time-PCR (qRT-PCR) confirmed the maximum induction of all these four genes in C8-HSL treated plants. However, the expression of defense genes was higher in C8-HSL treated resistant cultivar than that of susceptible cultivar. Therefore, the results support the view that C8-HSL molecule enhances disease protection against R. solanacearum infection in tomato through the activation of defense genes.

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Methyl Ester of p-Coumaric Acid: A Phytoalexin-Like Compound from Long English Cucumber Leaves

Cited by 108 publications

References 22 publications

Cerebroside mediated elicitation of defense response in chilli (Capsicum annuumL.) againstColletotrichum capsiciinfection

Cerebroside mediated elicitation of defense response in chilli (Capsicum annuumL.) againstColletotrichum capsiciinfection

Chemical Contents and Antifungal Activity of Some Durable Wood Extractives vs. Pleurotus ostreatus

Enhancement of the expression of defense genes in tomato against Ralstonia solanacearum by N-octanoyl-L-homoserine lactone

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