Differences in physiological traits at the initial stage of Fusarium head blight infection in wheat

Španić, Valentina; Drezner, Georg; Vuletić, Marija Viljevac

doi:10.32615/bp.2020.014

Cited by 8 publications

(7 citation statements)

References 48 publications

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“…Inoculating wheat with F. graminearum caused significant membrane deteriorations, including electrolyte leakage, lipid peroxidation, and protein oxidation, as well as H 2 O 2 accumulation and the production of hydroxyl radicals. The increased levels of stress markers in wheat that had been invaded by F. graminearum were documented by other investigations (Sorahinobar et al 2015;Spanic et al 2020;Sobhy et al 2021). Along with its function as a protective molecule against Fusarium invasion, H 2 O 2 frequently acts as an elicitor in plant-pathogen interactions (Sorahinobar et al 2017).…”

Section: Fm Min)mentioning

confidence: 70%

Physiological and Molecular Effects of Calcium and Salicylic Acid on Fusarium graminearum-Infected Wheat Seedlings

Sobhy

Abo‐Kassem

Saad‐Allah

et al. 2023

J Plant Growth Regul

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Fusarium graminearum is among the most virulent pathogens attacking wheat plants and significantly lowering its production globally. The present work aims to shed light on the interactions between two priming solutions, calcium (Ca) or salicylic acid (SA), and F. graminearum inoculation depending on the growth rate, physiological attributes, and molecular responses in wheat seedlings. In a pot experiment, F. graminearum-pre-inoculated or inoculum-free sandy soil was used to germinate wheat kernels after priming them for 12 h in distilled water, 5-mM CaCl2, or 0.05-mM SA. The results demonstrated that F. graminearum inoculation decreased growth rate and chlorophyll content, but promoted carotenoids, stress markers (electrolytes leakage, lipid peroxidation, protein oxidation, hydrogen peroxide, and hydroxyl radical), antioxidant molecules (AsA, phenols, and flavonoids), osmolytes (GB, amino acids, and proline), and the antioxidant enzymes (CAT, GPX, SOD, PPO, and PAL). Additionally, the fungal infestation boosted the expression of CAT, GR, PR4, MT, and PCS genes. However, presoaking wheat kernels in Ca or SA solutions has contributed to mitigating the negative effects of fungal inoculation by restoring growth rate, chlorophyll content, and antioxidant capacity. It has also decreased the induced oxidative stress and downregulated the gene expression of F. graminearum-inoculated wheat seedlings. Consequently, by minimizing the negative repercussions of F. graminearum infestation, priming with Ca or SA could be used to appropriately stimulate growth and readjust the oxidative status of wheat seedlings.

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Section: Fm Min)mentioning

confidence: 70%

Physiological and Molecular Effects of Calcium and Salicylic Acid on Fusarium graminearum-Infected Wheat Seedlings

Sobhy

Abo‐Kassem

Saad‐Allah

et al. 2023

J Plant Growth Regul

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“…SOD activity was greater in plants supplied with silicon in both cultivars from 24 to 72 hai in comparison with check plants. SOD is a key enzyme in the production of H 2 O 2 , which acts in direct defence against the pathogen, killing it, and serving as secondary messenger to alter expression of plant defence‐associated genes, and also as a substrate, for example for the POX enzymes, for cell wall reinforcement via lignification (Low & Merida, 1996; Spanic et al, 2020). POX activity increased in inoculated plants from 24 to 72 hai in cv.…”

Section: Discussionmentioning

confidence: 99%

Silicon amendment improves wheat defence against Fusarium graminearum and complements the control by fungicide of Fusarium head blight

et al. 2022

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A three-year field experiment with two wheat cultivars evaluated the effect of soilapplied silicon (Si), with and without fungicide spraying, on Fusarium head blight (FHB) control. Silicon treatment alone reduced FHB severity and the percentage of damaged wheat kernels, regardless of the cultivar. The best disease control was obtained for the cultivar with moderate disease resistance (MR), supplied with silicon and treated with fungicide during flowering. Silicon treatment alone promoted an increase in deoxynivalenol (DON) concentration in the disease-susceptible cultivar; however, in the MR cultivar, silicon amendment associated with fungicide treatment led to a reduction in DON concentration. Greenhouse experiments evaluated the effect of silicon combined with different timings of fungicide application on wheat defences against Fusarium graminearum. Plants supplied with silicon had a longer pathogen incubation period, lower FHB severity and lower DON concentration when compared to plants without silicon. In addition, silicon-supplied plants had higher soluble phenolic content and altered antioxidant enzyme activities (SOD, CAT, POX and PPO) that favoured early accumulation of hydrogen peroxide when compared to plants without silicon. Greater control of FHB and lower DON concentration in plants treated with silicon and fungicide before inoculation and up to 1 day after inoculation was associated with increased levels of defence-associated metabolites. Silicon contributed to the reduction of FHB and DON concentration in wheat, especially for the MR cultivar and, when combined with fungicide spraying, both MR and diseasesusceptible cultivars had enhanced performances upon silicon amendment.

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“…Doullah et al (2006) revealed different responses of different Brassica rapa genotypes to A. brassicicola infection, also under several factors-inoculum concentration, leaf stage, and incubation temperature. Differences in Fusarium head blight (FHB) resistance connected with enzymatic activity, among wheat cultivars were described by Spanic et al (2020). The authors suggested that GPX activity, which is induced in response to pathogen invasion, might help the resistant wheat cultivar to limit infection by Fusarium species.…”

Section: Discussionmentioning

confidence: 99%

The activity of β-glucosidase and guaiacol peroxidase in different genotypes of winter oilseed rape (Brassica napus L.) infected by Alternaria black spot fungi

et al. 2020

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The plants have developed several defense mechanisms to counteract pathogens. Among others, it includes activation of antioxidant enzymes like β-glucosidase and guaiacol peroxidase (GPX). These proteins participate in the oxidation of phenolic compounds, contributing to their increased fungitoxicity. The study aimed to analyze changes in the activity of β-glucosidase and GPX in four genotypes of winter oilseed rape (Mendel, Monolit, Polka, line L1425) inoculated with seven isolates: Alternaria brassicicola, Alternaria brassicae, Alternaria alternata (3 strains), Ulocladium chartarum (syn. A. chartarum), and Cladosporium cladosporioides. We noted that the varieties of oilseed rape, tested fungal species, and time of the plant material collection had significant (P < 0.001) effect on the activity of β-glucosidase and GPX per protein and fresh matter content comparing to the control group. A. brassicicola caused the highest mean increase in β-glucosidase and GPX activity in all examined genotypes, while other pathogens had a lower impact. Significantly lower β-glucosidase activity inoculated by various pathogens was noted between the L 1425 line and other varieties. GPX activity was in the opposite, the lowest activity was recorded in the Mendel variety, and the highest in the L 1425 line. Keywords Oilseed rape • β-glucosidase • Guaiacol peroxidase • Alternaria black spot Communicated by M. Horbowicz.

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Differences in physiological traits at the initial stage of Fusarium head blight infection in wheat

Cited by 8 publications

References 48 publications

Physiological and Molecular Effects of Calcium and Salicylic Acid on Fusarium graminearum-Infected Wheat Seedlings

Physiological and Molecular Effects of Calcium and Salicylic Acid on Fusarium graminearum-Infected Wheat Seedlings

Silicon amendment improves wheat defence against Fusarium graminearum and complements the control by fungicide of Fusarium head blight

The activity of β-glucosidase and guaiacol peroxidase in different genotypes of winter oilseed rape (Brassica napus L.) infected by Alternaria black spot fungi

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