scholarly journals At the scene of the crime: New insights into the role of weakly pathogenic members of the fusarium head blight disease complex

2020 ◽  
Vol 21 (12) ◽  
pp. 1559-1572
Author(s):  
Jiang Tan ◽  
Maarten Ameye ◽  
Sofie Landschoot ◽  
Noémie De Zutter ◽  
Sarah De Saeger ◽  
...  
Keyword(s):  
Fusarium Head Blight ◽  
Head Blight ◽  
Disease Complex ◽  
Blight Disease

scholarly journals Presence of the Weakly Pathogenic Fusarium poae in the Fusarium Head Blight Disease Complex Hampers Biocontrol and Chemical Control of the Virulent Fusarium graminearum Pathogen

2021 ◽  
Vol 12 ◽  
Author(s):  
Jiang Tan ◽  
Noémie De Zutter ◽  
Sarah De Saeger ◽  
Marthe De Boevre ◽  
Trang Minh Tran ◽  
...  
Keyword(s):  
Fusarium Head Blight ◽  
Control Strategies ◽  
Fusarium Species ◽  
Plant Diseases ◽  
Streptomyces Rimosus ◽  
Defense System ◽  
Head Blight ◽  
Disease Complex ◽  
Blight Disease ◽  
Multiple Pathogens

Fusarium head blight (FHB) in wheat (Triticum aestivum L.) is caused by a consortium of mutually interacting Fusarium species. In the field, the weakly pathogenic F. poae often thrives on the infection sites of the virulent F. graminearum. In this ecological context, we investigated the efficacy of chemical and biocontrol agents against F. graminearum in wheat ears. For this purpose, one fungicide comprising prothioconazole + spiroxamine and two bacterial biocontrol strains, Streptomyces rimosus LMG 19352 and Rhodococcus sp. R-43120 were tested for their efficacy to reduce FHB symptoms and mycotoxin (deoxynivalenol, DON) production by F. graminearum in presence or absence of F. poae. Results showed that the fungicide and both actinobacterial strains reduced FHB symptoms and concomitant DON levels in wheat ears inoculated with F. graminearum. Where Streptomyces rimosus appeared to have direct antagonistic effects, Rhodococcus and the fungicide mediated suppression of F. graminearum was linked to the archetypal salicylic acid and jasmonic acid defense pathways that involve the activation of LOX1, LOX2 and ICS. Remarkably, this chemical- and biocontrol efficacy was significantly reduced when F. poae was co-inoculated with F. graminearum. This reduced efficacy was linked to a suppression of the plant’s intrinsic defense system and increased levels of DON. In conclusion, our study shows that control strategies against the virulent F. graminearum in the disease complex causing FHB are hampered by the presence of the weakly pathogenic F. poae. This study provides generic insights in the complexity of control strategies against plant diseases caused by multiple pathogens.

scholarly journals Integrated transcriptome and hormone profiling highlight the role of multiple phytohormone pathways in wheat resistance against fusarium head blight

PLoS ONE ◽  
2018 ◽  
Vol 13 (11) ◽  
pp. e0207036 ◽  
Author(s):  
Lipu Wang ◽  
Qiang Li ◽  
Ziying Liu ◽  
Anu Surendra ◽  
Youlian Pan ◽  
...  
Keyword(s):  
Fusarium Head Blight ◽  
Head Blight ◽  
Hormone Profiling

scholarly journals Auxin as a player in the biocontrol of Fusarium head blight disease of barley and its potential as a disease control agent

2012 ◽  
Vol 12 (1) ◽  
pp. 224 ◽  
Author(s):  
Carloalberto Petti ◽  
Kathrin Reiber ◽  
Shahin S Ali ◽  
Margaret Berney ◽  
Fiona M Doohan
Keyword(s):  
Disease Control ◽  
Fusarium Head Blight ◽  
Control Agent ◽  
Head Blight ◽  
Blight Disease

scholarly journals Evaluation of resistance and the role of some defense responses in wheat cultivars to Fusarium head blight

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Nima Khaledi ◽  
Parissa Taheri ◽  
Mahrokh Falahati-Rastegar
Keyword(s):  
Nitric Oxide ◽  
Lipid Peroxidation ◽  
Fusarium Head Blight ◽  
Rapid Screening ◽  
Wheat Cultivars ◽  
Head Blight ◽  
Callose Deposition ◽  
Basal Resistance ◽  
Physiological And Biochemical

Abstract Fusarium graminearum and F. culmorum are the causal agents of Fusarium head blight (FHB) in cereal crops worldwide. Application of resistant cultivars is the most effective and economic method for management of FHB and reducing mycotoxin production in wheat. Understanding the physiological and biochemical mechanisms involved in basal resistance of wheat to FHB disease is limited. In this research, after screening resistance levels of eighteen wheat cultivars planted in Iran, Gaskozhen and Falat were identified as partially resistant and susceptible wheat cultivars against Fusarium spp., respectively. Also, we investigated the role of hydroxyl radical (OH−), nitric oxide (NO), callose deposition, lipid peroxidation and protein content in basal resistance of wheat to the hemi-biotrophic and necrotrophic Fusarium species causing FHB. Nitric oxide as a signaling molecule may be involved in physiological and defensive processes in plants. Our results showed that NO generation increased in seedlings and spikes of wheat cultivars after inoculation with Fusarium species. We observed earlier and stronger callose deposition at early time points after infection by Fusarium spp. isolates than in non-infected plants, which was positively related to the resistance levels in wheat cultivars. Higher levels of OH− and malondialdehyde (MDA) accumulation (as a marker of lipid peroxidation) were observed in the Falat than in the Gaskozhen cultivar, under non-infected and infected conditions. So, estimation of lipid peroxidation could be useful to evaluate cultivars’ susceptibility. These findings can provide novel insights for better recognition of physiological and biochemical markers of FHB resistance, which could be used for rapid screening of resistance levels in wheat cultivars against this destructive fungal disease.

scholarly journals Identification and Chemotype Profiling of Fusarium Head Blight Disease in Triticale

2021 ◽  
Vol 27 (4) ◽  
pp. 172-179
Author(s):  
Jung-Wook Yang ◽  
Joo-Yeon Kim ◽  
Mi-Rang Lee ◽  
In-Jeong Kang ◽  
Jung- Hyun Jeong ◽  
...  
Keyword(s):  
Sequence Analysis ◽  
Fusarium Head Blight ◽  
Gene Sequence ◽  
Disease Incidence ◽  
Head Blight ◽  
Resistance Response ◽  
Fusarium Asiaticum ◽  
Gene Sequence Analysis ◽  
The Media ◽  
Blight Disease

This study aimed to assess the disease incidence and distribution of toxigenic in Korean triticale. The pathogen of triticale that cause Fusarium head blight were isolated from five different triticale cultivars that cultivated in Suwon Korea at 2021 year. The 72 candidate were classified as a Fusarium asiaticum by morphology analysis and by ITS1, TEF-1α gene sequence analysis. And the results of pathogenicity with 72 isolates on seedling triticale, 71 isolates were showed disease symptom. Also, seven out of 71 Fusarium isolates were inoculated on the wheat, to test the pathogenicity on the different host. The results showed more low pathogenicity on the wheat than triticale. The results of analysis of toxin type with 72 isolates, 64.6% isolates were produced nivalenol type toxin and other 4.6% and 30.8% isolates were produce 3-acetyldeoxynivalenol and 15-acetyldeoxynivalenol, respectively. To select fungicide for control, the 72 Fusarium isolates were cultivated on the media that containing four kinds fungicide. The captan, hexaconazole, and difenoconazole·propiconazole treated Fusarium isolates were not showed resistance response against each fungicide. However, six isolates out of 72 isolates, showed resistance response to fludioxonil. This study is first report that F. asiaticum causes Fusarium head blight disease of triticale in Korea.

scholarly journals Action and reaction of host and pathogen during Fusarium head blight disease

2009 ◽  
Vol 185 (1) ◽  
pp. 54-66 ◽  
Author(s):  
Stephanie Walter ◽  
Paul Nicholson ◽  
Fiona M. Doohan
Keyword(s):  
Fusarium Head Blight ◽  
Head Blight ◽  
Blight Disease

Role of Temperature and Moisture in the Production and Maturation of Gibberella zeae Perithecia

Plant Disease ◽  
2006 ◽  
Vol 90 (5) ◽  
pp. 637-644 ◽  
Author(s):  
N. S. Dufault ◽  
E. D. De Wolf ◽  
P. E. Lipps ◽  
L. V. Madden
Keyword(s):  
North America ◽  
Water Potential ◽  
Fusarium Head Blight ◽  
Fusarium Graminearum ◽  
Gibberella Zeae ◽  
Head Blight ◽  
Influence Of Temperature ◽  
The Future ◽  
Controlled Environments

Fusarium graminearum (teleomorph Gibberella zeae) is the most common pathogen of Fusarium head blight (FHB) in North America. Ascospores released from the perithecia of G. zeae are a major source of inoculum for FHB. The influence of temperature and moisture on perithecial production and development was evaluated by monitoring autoclaved inoculated cornstalk sections in controlled environments. Perithecial development was assessed at all combinations of five temperatures (12, 16, 20, 24, and 28°C) and four moisture levels with means (range) -0.45 (-0.18, -1.16), -1.30 (-0.81, -1.68), -2.36 (-1.34, -3.53) and -4.02 (-2.39, -5.88) MPa. Moisture levels of -0.45 and -1.30 MPa and temperatures from 16 to 24°C promoted perithecial production and development. Temperatures of 12 and 28°C and moisture levels of -2.36 and -4.02 MPa either slowed or limited perithecial production and development. The water potential of -1.30 MPa had mature perithecia after 10 days at 20°C, but not until after 15 days for 24°C. In contrast, few perithecia achieved maturity and produced ascospores at lower moisture levels (-2.36 and -4.02 MPa) and low (12°C) and high (28°C) temperatures. In the future, it may be possible to use the information gathered in these experiments to improve the accuracy of FHB forecasting systems.

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