Effect of Methyl Jasmonate on Disease Severity and Expression of Plant Defensin Gene during Alternaria brassicae Infection in Arabidopsis

Tiwari, Shailesh; Pandey, Dinesh; Gaur, Manu; Kumar, Anil

doi:10.20546/ijcmas.2017.607.105

Cited by 5 publications

(3 citation statements)

References 19 publications

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“…An analysis of the severity of fungal diseases in triticale plants (Tables and ) based on DI values revealed that MJ effectively inhibited stem base, leaf, and spike infections. Methyl jasmonate was most effective when applied at a concentration of 1 × 10 –3 M. In a study by Tiwari et al, MJ also effectively inhibited the progression of disease in Arabidopsis . Motallebi et al reported that MJ decreased the severity of Fusarium root and crown rot in experimentally infected wheat plants.…”

Section: Discussionmentioning

confidence: 92%

Effect of Exogenous Application of Methyl Jasmonate on the Lipid and Carbohydrate Content and Composition of Winter Triticale (Triticosecale Wittm.) Grain and the Severity of Fungal Infections in Triticale Plants and Grain

Zalewski

Lahuta

Martysiak‐Żurowska

et al. 2019

J. Agric. Food Chem.

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Kernels of winter triticale (Triticosecale Wittm. cv. Dinaro) were analyzed. In the autumn of 2015, the effect of methyl jasmonate (MJ) on the germination of triticale kernels and the development of triticale seedlings was analyzed in a laboratory before kernels were sown in experimental plots. Kernels harvested from plots in August 2016 were analyzed to determine their lipid and carbohydrate content and composition and the severity of fungal infections. Triticale grain was harvested at full maturity. The plots were sprayed with MJ at concentrations of 10–6 to 10–3 M in the stem elongation stage (200 L/ha) and in the early milk stage (300 L/ha). Other preventive treatments, fungicides, pesticides, or foliar fertilizers were not applied. Lipids of triticale kernels contained 20 fatty acids (FAs) with the highest proportion of linoleic acid. Methyl jasmonate did not exert a significant effect on the FA composition of kernel lipids treated with the plant hormone during the growing season. Statistical analysis did not reveal significant (p < 0.05) differences in the total content of soluble carbohydrates in control kernels and in the kernels collected from triticale plants treated with MJ. Methyl jasmonate applied at a concentration of 10–3 M in BBCH stages 54 and 73 reduced the prevalence of stem base, leaf, and spike diseases. However, the severity of grain infections caused by mycotoxin-producing fungi increased in treatments where MJ was applied at a concentration of 10–5 M relative to the control treatment. The study describes the results noted in naturally infected plants and provides valuable inputs for agricultural practice, but further research is required to validate the presented findings.

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Section: Discussionmentioning

confidence: 92%

Effect of Exogenous Application of Methyl Jasmonate on the Lipid and Carbohydrate Content and Composition of Winter Triticale (Triticosecale Wittm.) Grain and the Severity of Fungal Infections in Triticale Plants and Grain

Zalewski

Lahuta

Martysiak‐Żurowska

et al. 2019

J. Agric. Food Chem.

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“…Several authors have also reported that SA activates plant defense responses against hemibiotrophic pathogens such as F. oxysporum [94][95][96]. The lack of response in Foph-infected plants and sprayed with JA may be due to the fact that JA is generally more effective against necrotrophic pathogens [97,98].…”

Section: Discussionmentioning

confidence: 99%

Physiological Responses to the Foliar Application of Synthetic Resistance Elicitors in Cape Gooseberry Seedlings Infected with Fusarium oxysporum f. sp. physali

Chávez-Arias

Gómez-Caro

Restrepo-Díaz

2020

Plants

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Vascular wilt caused by Fusarium oxysporum is the most limiting disease that affects cape gooseberry (Physalis peruviana L.) crops in Colombia. The use of synthetic elicitors for vascular wilt management is still scarce in Andean fruit species. The objective of the present study was to evaluate the effect and number of foliar applications of synthetic elicitors such as jasmonic acid (JA), salicylic acid (SA), brassinosteroids (BR), or a commercial resistance elicitor based on botanical extracts (BE) on disease progress and their effect on the physiology of cape gooseberry plants inoculated with F. oxysporum f. sp. physali. Groups of ten plants were separately sprayed once, twice, or three times with a foliar synthetic elicitor, respectively. Elicitor applications were performed at the following concentrations: JA (10 mL L−1), SA (100 mg L−1), BR (1 mL L−1) and BE (2.5 mL of commercial product (Loker®) L−1). The results showed that three foliar BR, SA, or BE applications reduced the area under the disease progress, severity index, and vascular browning in comparison to inoculated plants without any elicitor spray. Three BR, SA, or BE sprays also favored stomatal conductance, water potential, growth (total dry weight and leaf area) and fluorescence parameters of chlorophyll compared with inoculated and untreated plants with no elicitor sprays. Three foliar sprays of SA, BR, or BE enhanced photosynthetic pigments (leaf total chlorophyll and carotenoid content) and proline synthesis and decreased oxidative stress in Foph-inoculated plants. In addition, the effectiveness of three foliar BR, SA, or BE sprays was corroborated by three-dimensional plot and biplot analysis, in which it can evidence that stomatal conductance, proline synthesis, and efficacy percentage were accurate parameters to predict Foph management. On the hand, JA showed the lowest level of amelioration of the negative effects of Foph inoculation. In conclusion, the use of the synthetic elicitors BR, SA, or BE can be considered as a tool complementary for the commercial management of vascular wilt in areas where this disease is a limiting factor.

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“…SA signaling involves PR genes encoding PR proteins including β-1,3-glucanase and chitinase (Stein et al, 2008). JA signaling involves some genes encoding defense-related proteins, such as defensin (Tiwari et al, 2017;Sarkar, Jana & Sikdar, 2017;Brown et al, 2003). Previous studies have shown that non-pathogenic F. oxysporum and F. fujikuroi induce up-regulated PR1 genes expression (Veloso & Díaz, 2012) and activities of chitinase and β-1,3-glucanase (Fuchs, Moënne-Loccoz & Défago, 1997;Patil et al, 2011) and improve pathogen resistance of plant hosts.…”

Section: Fujikuroimentioning

confidence: 99%

Epiphytic fungi induced pathogen resistance of invasive plant Ipomoea cairica against Colletotrichum gloeosporioides

Hua

Zhu

et al. 2019

Preprint

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Background. Ipomoea cairica (L.) Sweet is a destructive invasive weed in South China but rarely infected with pathogens in nature. Its pathogen resistance mechanism is largely unknown at present. Some non-pathogenic isolates of Fusarium oxysporum and Fusarium fujikuroi are prevalent on many plant species and function as pathogen resistance inducers of host plants. The objective of the present research is to investigate whether the symbiosis between the both fungi and I. cairica is present, and thereby induce pathogen resistance of I. cairica. Methods. Through field investigation, we explored the occurrence rates of F. oxysporum and F. fujikuroi on leaf surfaces of I. cairica plants in natural habitats and compared their abundance between healthy leaves and leaves infected with Colletotrichum gloeosporioides, a natural pathogen. With artificial inoculation, we assessed their pathogencity to I. cairica and study their contribution of pathogen resistance to I. cairica against C. gloeosporioides. Results. We found that F. oxysporum and F. fujikuroi were widely epiphytic on healthy leaf surfaces of I. cairica in sunny non-saline, shady non-saline and sunny saline habitats. Their occurrence rates reached up to 100%. Moreover, we found that the abundance of F. oxysporum and F. fujikuroi on leaves infected with C. gloeosporioides were significantly lower than that of healthy leaves. With artificial inoculation, we empirically confirmed that F. oxysporum and F. fujikuroi were non-pathogenic to I. cairica. It was interesting that colonization by F. fujikuroi, F. oxysporum alone and a mixture of both fungi resulted in a reduction of C. gloeosporioides infection to I. cairica accompanied by lower lesion area to leaf surface area ratio, increased H2O2 concentration and salicylic acid (SA) level relative to the control. However, NPR1 expression, chitinase and β -1,3-glucanase activities as well as stem length and biomass of I. cairica plant only could be significantly improved by F. oxysporum and a mixture of both fungi but not by F. fujikuroi. In addition, as compared to colonization by F. oxysporum and a mixture of both fungi, F. fujikuroi induced significantly higher jasmonic acid (JA) level but significantly lower β -1,3-glucanase activity in leaves of I. cairica plants. Thus, our findings indicated the symbiosis of epiphytic fungi F. fujikuroi and F. oxysporum facilitated the fitness of I. cairica via the induced systemic resistance of host plant against C. gloeosporioides. F. oxysporum played a dominant role in inducing pathogen resistance of I. cairica. Its presence alleviated the antagonism of the JA signaling on SA-dependent β -1,3-glucanase activity and enabled I. cairica plants to maintain relatively higher level of resistance against C. gloeosporioides.

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Effect of Methyl Jasmonate on Disease Severity and Expression of Plant Defensin Gene during Alternaria brassicae Infection in Arabidopsis

Cited by 5 publications

References 19 publications

Effect of Exogenous Application of Methyl Jasmonate on the Lipid and Carbohydrate Content and Composition of Winter Triticale (Triticosecale Wittm.) Grain and the Severity of Fungal Infections in Triticale Plants and Grain

Effect of Exogenous Application of Methyl Jasmonate on the Lipid and Carbohydrate Content and Composition of Winter Triticale (Triticosecale Wittm.) Grain and the Severity of Fungal Infections in Triticale Plants and Grain

Physiological Responses to the Foliar Application of Synthetic Resistance Elicitors in Cape Gooseberry Seedlings Infected with Fusarium oxysporum f. sp. physali

Epiphytic fungi induced pathogen resistance of invasive plant Ipomoea cairica against Colletotrichum gloeosporioides

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