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Nachaat Sakr Department of Agriculture, Atomic Energy Commission of Syria, Damascus, P.O. Box 6091, Syria

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Abstract

Till now, no published study is available on the variation in pathogenicity of Fusarium head blight (FHB) pathogens in relation to their isolation origin in barley head. To end this, two barley cultivars of contrasting quantitative resistance were artificially infected by four FHB species under field conditions over two consecutive growing seasons. Then, pathogenicity tests were conducted under in vitro conditions on single-spore cultures originated from both kernels and glumes in the heads. Different pathogenicity was detected among Fusarium species originated from both kernels and glumes, indicating that the same isolate from glumes and kernels differs in pathogenicity on leaves/seedlings. Isolates of Fusarium culmorum and Fusarium verticillioides originated from infected kernels had shorter latent periods and higher area under disease progress curves compared to isolates originated from glumes, and the reverse was observed for the Fusarium equiseti isolate. In the case of Fusarium solani, isolates originated from kernels or from glumes were equally pathogenic. Primarily findings in this first in-depth study have implications for breeding programs relied principally on actual quantification of pathogenicity in Fusarium species present in a given environment. The sampling of fungi should take into account the presence of Fusarium species of interest on kernels or glumes.

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  • Brennan, J. M., Egan, D., Cooke, B. M., and Doohan, F. M. (2005). Effect of temperature on head blight of wheat caused by Fusarium culmorum and F. graminearum. Plant Pathology, 54(2): 156160.

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  • Browne, R. A. and Cooke, B. M. (2005). A comparative assessment of potential components of partial disease resistance to Fusarium head blight using a detached leaf assay of wheat, barley and oats. European Journal of Plant Pathology, 112(3): 247258.

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  • Diamond, H. and Cooke, B. M. (1999). Towards the development of a novel in vitro strategy for early screening of Fusarium ear blight resistance in adult winter wheat plants. European Journal of Plant Pathology, 105(4): 363372.

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  • DSAASTAT (2015). An introduction to DSAASTAT statistics software by Andrea Onofri. Available at: https://vdocuments.mx/dsaastat-by-andrea-onofri.html (Accessed:October 21, 2015).

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  • Fernando, W. G. D., Oghenekaro, A. O., Tucker, J. R., and Badea, A. (2021). Building on a foundation: advances in epidemiology, resistance breeding, and forecasting research for reducing the impact of Fusarium head blight in wheat and barley. Canadian Journal of Plant Pathology, 43(4): 495526.

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  • Kniskern, J. M., Barrett, L. G., and Bergelson, J. (2011). Maladaptation in wild population of the generalist plant pathogen Pseudomonas syringae. Evolution, 65(3): 818830.

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  • Leslie, J. F. and Summerell, A. B. (2006). The Fusarium laboratory manual. Blackwell Publishing Professional, Ames, pp. 1388.

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  • Purahong, W., Alkadri, D., Nipoti, P., Pisi, A., Lemmens, M., and Prodi, A. (2012). Validation of a modified petri-dish test to quantify aggressiveness of Fusarium graminearum in durum wheat. European Journal of Plant Pathology, 132(3): 381391.

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  • Sakr, N. (2018a). Aggressiveness variation among and within Fusarium head blight species on barley in vitro. Acta Phytopathologica et Entomologica Hungarica, 53(1): 1118.

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  • Sakr, N. (2018b). Components of quantitative resistance in barley plants to Fusarium head blight infection determined using three in vitro assays. Journal of Plant Protection Research, 58(3): 176183.

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  • Sakr, N. (2019). Variation in aggressiveness of Fusarium head blight species towards barley plants determined using three in vitro assays. Pakistan Journal of Phytopathology, 31(1): 1933.

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  • Sakr, N. (2020a). Aggressiveness of Fusarium species causing head blight in barley landraces grown under Fertile Crescent conditions. Pakistan Journal of Phytopathology, 32(1): 4152.

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  • Sakr, N. (2020b). An efficient in vitro assay to predict resistance and pathogenicity in the Fusarium head blight – Hordeum vulgare pathosystem. Open Agriculture Journal, 13: 918.

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  • Sakr, N. (2020c). Conservation of cereal fungi following different methods of preservation for long terms. Pakistan Journal of Phytopathology, 32(2): 159168.

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  • Sakr, N. and Shoaib, A. (2021). Pathogenic and molecular variation of Fusarium species causing head blight on barley landraces. Acta Phytopathologica et Entomologica Hungarica, 56(1): 523.

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  • Simpson, D. R., Rezanoor, H. N., Parry, D. W., and Nicholson, P. (2000). Evidence for differential host preference in Microdochium nivale var. majus and Microdochium nivale var. nivale. Plant Pathology, 49(2): 261268.

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  • Xue, A. G., Armstrong, K. C., Voldeng, H. D., Fedak, G., and Babcock, C. (2004). Comparative aggressiveness of isolates of Fusarium species causing head blight on wheat in Canada. Canadian Journal of Plant Pathology, 26(1): 8188.

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  • Xue, A. G., Chen, Y., Seifert, K., Guo, W., Blackwell, B. A., Harris, L. J., and Overy, D. P. (2019). Prevalence of Fusarium species causing head blight of spring wheat, barley and oat in Ontario during 2001–2017. Canadian Journal of Plant Pathology, 41(3): 392402.

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  • Xue, A. G., Ho, K. M., Butler, G., Vigier, B. J., and Babcock, C. (2006). Pathogenicity of Fusarium species causing head blight in barley. Phytoprotection, 87(1): 5561.

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Z BOZSÓ Centre for Agricultural Research, Hungary
PE CHETVERIKOV Saint-Petersburg State University, Russia
JX CUI Henan Institute of Science and Technology, China
J FODOR Centre for Agricultural Research, Hungary
Z IMREI Centre for Agricultural Research, Hungary
BM KAYDAN Çukurova University, Turkey
L KISS University of Southern Queensland, Australia
V MARKÓ Hungarian University of Agriculture and Life Sciences, Hungary
MW NEGM Ibaraki University, Japan
L PALKOVICS Széchenyi István University, Hungary
M POGÁNY Centre for Agricultural Research, Hungary
D RÉDEI National Chung Hsing University, Taiwan
A TOLSTIKOV University of Tyumen, Russia
J VUTS Rothamsted Research, UK
GQ WANG Guangxi University, China

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Acta Phytopathologica et Entomologica Hungarica
Language English
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1966
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