Induction of defense genes and secondary metabolites in saskatoons (Amelanchier alnifolia Nutt.) in response to Entomosporium mespili using jasmonic acid and Canada milkvetch extracts

Wolski, Erika Alejandra; Henríquez, María Antonia; Adam, Lorne R.; Badawi, Mohamed; Andreu, Adriana Balbina; Hadrami, Abdelbasset El; Daayf, Fouad

doi:10.1016/j.envexpbot.2010.01.002

Cited by 5 publications

(3 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The defense responses relying on this pathway include chitinase and glucanase activities that have been shown to be induced by chitosan in Citrus and Fragaria species [112,113], lipoxygenase [114,115] and the accumulation of phytoalexins [49,79,116]. …”

Section: Mechanisms Of Action Of Chitosan In Reducing Plant Diseasesmentioning

confidence: 99%

“…Chitosan is also reported to increase the endogenous levels of 2-oxo-phytodeionic and jasmonic acids in many species including rice [ 111 ], leading to the activation of the octadecanoic acid pathway. The defense responses relying on this pathway include chitinase and glucanase activities that have been shown to be induced by chitosan in Citrus and Fragaria species [ 112 , 113 ], lipoxygenase [ 114 , 115 ] and the accumulation of phytoalexins [ 49 , 79 , 116 ].…”

Section: Mechanisms Of Action Of Chitosan In Reducing Plant Diseasmentioning

confidence: 99%

See 1 more Smart Citation

Chitosan in Plant Protection

Hadrami

Adam

Hadrami³

et al. 2010

Marine Drugs

Self Cite

599

336

View full text Add to dashboard Cite

Chitin and chitosan are naturally-occurring compounds that have potential in agriculture with regard to controlling plant diseases. These molecules were shown to display toxicity and inhibit fungal growth and development. They were reported to be active against viruses, bacteria and other pests. Fragments from chitin and chitosan are known to have eliciting activities leading to a variety of defense responses in host plants in response to microbial infections, including the accumulation of phytoalexins, pathogen-related (PR) proteins and proteinase inhibitors, lignin synthesis, and callose formation. Based on these and other proprieties that help strengthen host plant defenses, interest has been growing in using them in agricultural systems to reduce the negative impact of diseases on yield and quality of crops. This review recapitulates the properties and uses of chitin, chitosan, and their derivatives, and will focus on their applications and mechanisms of action during plant-pathogen interactions.

show abstract

Section: Mechanisms Of Action Of Chitosan In Reducing Plant Diseasesmentioning

confidence: 99%

Section: Mechanisms Of Action Of Chitosan In Reducing Plant Diseasmentioning

confidence: 99%

Chitosan in Plant Protection

Hadrami

Adam

Hadrami³

et al. 2010

Marine Drugs

Self Cite

599

336

View full text Add to dashboard Cite

show abstract

“…Evidence has emerged during the past decades demonstrating the importance of products from the phenylpropanoid pathway in plant defence response against pathogens (Dixon et al, 2002;Jahangir et al, 2009). In recent years, very extensive and detailed studies on changes of metabolites in plant tissues have been carried out in 75 some plant pathogen interactions such as Arabidopsis/Pseudomonas syringae (Hagemeier et al, 2001;Tan et al, 2004), tobacco/tobacco mosaic virus (Choi et al, 2006) or saskatoons/Entomosporium mespili (Wolski et al, 2010). However, less is known regarding changes of the metabolic profile associated with the response of tomato plants to pathogens Zacarés et al, 2007).…”

mentioning

confidence: 99%

Identification of defence metabolites in tomato plants infected by the bacterial pathogen Pseudomonas syringae

López-Gresa

Torres

Campos

et al. 2011

Environmental and Experimental Botany

View full text Add to dashboard Cite

being associated with the tomato/P. syringae interaction. Inhibition of the P. syringaeinduced ethylene by 2-aminoethoxyvinylglycine, markedly impaired the accumulation of HCAA in inoculated tomato leaves, but it had no effect on CGA or rutin synthesis.On the other hand, the lack of accumulation of SA in NahG transgenic tomato plants, overexpressing a bacterial salicylic hydroxylase, did not prevent the enhancing of 40 HCAA produced by P. syringae infection. Taken together, our results indicate that ethylene, but not SA, is essential for the synthesis of HCAA in response to bacterial infection of tomato leaves. Antibiotic activities of the induced metabolites were also studied. CGA induced a notable expression of the defence-related genes PR1 and P23.Moreover, trans-HCAA of noradrenaline and octopamine showed a potent free radical 45 scavenging competence. In particular, trans N-feruloylnoradrenaline presented a very 3 outstanding antioxidant activity, thus indicating that these compounds may play a role in the defence response of tomato plants against bacterial infection. 50Keywords: Solanum lycopersicum, Pseudomonas syringae, plant metabolites, plantpathogen interactions, hydroxycinnamic acid amides, free radical scavenging activity.

show abstract