Benzo‐thiadiazole‐7‐carbothioic Acid <i>S</i>‐methyl Ester does not protect Melon Fruits against <i>Fusarium pallidoroseum</i> Infection but Induces Defence Responses in Melon Seedlings

Gondim, Darcy M.F.; Terao, D.; Martins-Miranda, A. S.; Vasconcelos, Iika M.; Oliveira, José T.A.

doi:10.1111/j.1439-0434.2008.01419.x

Cited by 14 publications

(8 citation statements)

References 41 publications

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“…Exogenous application of BTH has been commonly found to induce defensive responses and pathogen resistance in several agricultural and herbaceous species (e.g. Gondim et al 2008;Mbouobda et al 2010;Sklodowska et al 2010), but to date no information is available about its effects on conifer species. Further studies should address the possible existence of crosstalk between jasmonate and salicylic acid pathways in pine trees, a better characterization of the qualitative response by this bioactive compound and its relationship with different herbivore feeding guilds.…”

Section: Discussionmentioning

confidence: 99%

Quantitative comparison of chemical, biological and mechanical induction of secondary compounds in Pinus pinaster seedlings

Moreira

Zas

Sampedro

2011

Trees

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Chemical elicitors and mechanical treatments simulating real insect herbivory have been increasingly used to study induced defensive responses in woody plants. However, simultaneous quantitative comparisons of plant chemical defences elicited by real and simulated herbivory have received little attention. In this paper we compared the effects of real herbivory, simulated herbivory using two chemical elicitors, and mechanical damage treatments on the quantitative secondary chemistry of Pinus pinaster juveniles (namely on non-volatile resin in the stem and total phenolics in the needles). The real herbivory involved phloem wounding by Hylobius abietis and defoliation by Brachyderes lusitanicus (two pine weevils); the chemical elicitors to simulate herbivory induction were 40 mM methyl jasmonate (MJ) and 20 lM benzothiadiazole (BTH); and the mechanical treatments included phloem wounding and needle clipping. We also performed an additional experiment for assessing at what extent insect extracts could increase plant responses over mechanical damage. Chemical induction with MJ, mechanical wounding and real phloem herbivory by H. abietis all produced quantitatively similar results, increasing the concentration of resin in the stem and total phenolics in the needles by equivalent magnitudes. Exogenous application of BTH increased the concentration of phenolic compounds in pine needles, but did not show the same effect on stem resin. Contrastingly, we did not find significant changes in the concentration of resin in the stem or phenolics in the needles after needle clipping and B. lusitanicus feeding. Mechanical damage followed by the application of extracts from the insects B. lusitanicus and H. abietis on the injured tissues did not increase the responses in comparison to mechanical damage alone. The fact that strong induced responses elicited by phloem wounding insects are equally elicited by phloem injuries suggests that defences in pine trees are raised with low specificity regarding biotic enemies. Results from this paper support future methodological approaches using chemical elicitors and mechanical damage as simulated herbivory treatments for the experimental induction of conifer defences.

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Section: Discussionmentioning

confidence: 99%

Quantitative comparison of chemical, biological and mechanical induction of secondary compounds in Pinus pinaster seedlings

Moreira

Zas

Sampedro

2011

Trees

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“…Higher levels of CHT and GLU enhance resistance to fungal pathogens by hydrolysing fungal cell walls [55,56] and by releasing susceptible melon leaves. Primary leaves of three-week-old plants were inoculated with spore suspension of C. lagenarium at 10 6 conidia mL À1 prepared in sterile distilled water (inoculated), or mock-inoculated with sterile distilled water (uninoculated).…”

Section: Discussionmentioning

confidence: 99%

Defence responses in leaves of resistant and susceptible melon (Cucumis melo L.) cultivars infected with Colletotrichum lagenarium

Guest

2013

Physiological and Molecular Plant Pathology

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“…The fungus F. pallidoroseum is commonly associated with melon postharvest rot and is found in the soil, in plant remains, in tropical and subtropical regions (LOKESH et al, 2008;GONDIM et al, 2008). The infection occurs through natural cracks in the peduncle abscission zone during harvest, and the pathogenesis develops at the post-harvest stage.…”

Section: Introductionmentioning

confidence: 99%

Antifungal activity of essential oils of Myrcia ovata chemotypes and their major compounds on phytopathogenic fungi

et al. 2020

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This work evaluated the antifungal activity of essential oils of Myrcia ovata chemotypes (MYRO-175, MYRO-156, MYRO-154, MYRO-165, and MYRO-015) and their major compounds (linalool, geraniol, citral, and (E)-nerolidol) on the phytopathogenic fungi Fusarium pallidoroseum (which causes melon postharvest rot) and Colletotrichum musae (which causes anthracnose in banana). The essential oils were obtained by hydrodistillation and analyzed by GCMS/FID. To evaluate the antifungal activity, the essential oils and their major compounds were tested at different concentrations (0.1; 0.3; 0.4; 0.5; 0.7; 1.0; 3.0, and 5.0 mL/L). The major compounds found in the essential oils were nerolic acid, linalool, geraniol, citral, and (E)-nerolidol. The essential oils of the plants MYRO-154, MYRO-165, and MYRO-015 had the minimum inhibitory concentration (MIC) (0.3 mL/L) for F. pallidoroseum and the lowest minimum fungicidal concentration (MFC) (0.7 mL/L), for C. musae. Geraniol and citral had the lowest MFC (0.5 mL / L) for the two fungi tested. For F. pallidoroseum, the essential oils of the chemotypes were more effective than their major compounds. Conversely, the major compounds geraniol of the chemotype MYRO-156 (74.37%) and citral were more effective than their respective essential oils for C. musae. (E)-nerolidol and geraniol of the chemotype MYRO-015 (33.15%) were responsible for the antifungal activity of the essential oils of their respective chemotypes.

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Benzo‐thiadiazole‐7‐carbothioic Acid S‐methyl Ester does not protect Melon Fruits against Fusarium pallidoroseum Infection but Induces Defence Responses in Melon Seedlings

Cited by 14 publications

References 41 publications

Quantitative comparison of chemical, biological and mechanical induction of secondary compounds in Pinus pinaster seedlings

Quantitative comparison of chemical, biological and mechanical induction of secondary compounds in Pinus pinaster seedlings

Defence responses in leaves of resistant and susceptible melon (Cucumis melo L.) cultivars infected with Colletotrichum lagenarium

Antifungal activity of essential oils of Myrcia ovata chemotypes and their major compounds on phytopathogenic fungi

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