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Добірка наукової літератури з теми "Phyllachora maydis"

Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 29 січня 2023

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Статті в журналах з теми "Phyllachora maydis"

Telenko, Darcy E. P., Tiffanna J. Ross, Sujoung Shim, Qinhu Wang, and Raksha Singh. "Draft Genome Sequence Resource for Phyllachora maydis—An Obligate Pathogen That Causes Tar Spot of Corn with Recent Economic Impacts in the United States." Molecular Plant-Microbe Interactions® 33, no. 7 (July 2020): 884–87. http://dx.doi.org/10.1094/mpmi-03-20-0075-a.

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Анотація:

Phyllachora maydis is an important fungal pathogen that causes tar spot of corn and has led to significant yield loss in the United States and other countries. P. maydis is an obligate biotroph belonging to the Sordariomycetes class of Ascomycota. Due to the challenges posed by their obligate nature, there is no genome sequence available in the Phyllachora genus. P. maydis isolate PM01 was collected from a corn field in Indiana and the genome was determined by next-generation sequencing. The assembly size is 45.7 Mb, with 56.46% repetitive sequences. There are 5,992 protein-coding genes and 59 are predicted as effector proteins. This genome resource will increase our understanding of genomic features of P. maydis and will assist in studying the corn–P. maydis interaction and identifying potential resistant candidates for corn breeding programs.

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Gómez-Montiel, Noel O., Marino González-Camarillo, Miguel A. Cantú-Almaguer, Mauro Sierra-Macías, Bulmaro Coutiño-Estrada, and Margarito Manjarrez-Salgado. "‘H-563’, HÍBRIDO DE MAÍZ TROPICAL TOLERANTE A LA ENFERMEDAD “MANCHA DE ASFALTO”." Revista Fitotecnia Mexicana 36, no. 1 (March 15, 2013): 81. http://dx.doi.org/10.35196/rfm.2013.1.81.

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Анотація:

En el trópico y subtrópico de México se siembran un poco más de 4.0 millones de hectáreas de maíz (Zea mays L.) (Gómez et al., 2001). En estas áreas, la enfermedad foliar “Mancha de asfalto” causada por el complejo de hongos Phyllachora maydis, Monographella maydis y Conyothyrium phyllachorae (Marino et al., 2008) afecta más de 500 mil hectáreas en los Estados de Nayarit, Jalisco, Guerrero, Chiapas y Veracruz (Hock et al., 1989). Cuando la infección es severa en la etapa de embuche o en floración, la pérdida del rendimiento de grano puede ser total, y si la enfermedad incide después de la floración el rendimiento puede disminuir en 50 % debido principalmente a que el grano no completa su desarrollo y resulta con menor peso específico (Marino et al., 2008).

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Groves, Carol L., Nathan M. Kleczewski, Darcy E. P. Telenko, Martin I. Chilvers, and Damon L. Smith. "Phyllachora maydis Ascospore Release and Germination from Overwintered Corn Residue." Plant Health Progress 21, no. 1 (January 1, 2020): 26–30. http://dx.doi.org/10.1094/php-10-19-0077-rs.

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Tar spot of corn, caused by Phyllachora maydis, has been reported in several upper Midwest states in the United States. This has led to expanded efforts to more thoroughly understand the biology of P. maydis and the epidemiology of tar spot. This study determined the potential for P. maydis ascospore release and germination from overwintered P. maydis-infected corn residues from various locations in the upper Midwest. Corn residue samples collected in the spring of 2019 from 12 fields in four states were examined. Ascospore release and germination were observed in all residue samples collected. The mean total number of ascospores released per milliliter of water ranged from 3.6 × 103 to 4.8 × 106 after 4-h incubation and 3.7 × 103 to 4.4 × 106 after 24-h incubation. The mean percent spore germination ranged from 0.7 to 24.1% after 4-h incubation and 2.4 to 24.9% after 24-h incubation. There was a significant inverse relationship between total numbers of ascospores released and the percent germination of the ascospores. Samples from Illinois consistently yielded the greatest total ascospore release but were also consistently among the samples with the lowest percent ascospore germination. Samples from Wisconsin and Indiana were among the lowest for total ascospore numbers but were among the highest for total ascospore germination. These findings provide evidence that P. maydis can overwinter in multiple areas of the upper Midwest. Future research should focus on reducing infested corn residue to reduce initial infection by P. maydis.

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McCoy, A. G., M. G. Roth, R. Shay, Z. A. Noel, M. A. Jayawardana, R. W. Longley, G. Bonito, and M. I. Chilvers. "Identification of Fungal Communities Within the Tar Spot Complex of Corn in Michigan via Next-Generation Sequencing." Phytobiomes Journal 3, no. 3 (January 2019): 235–43. http://dx.doi.org/10.1094/pbiomes-03-19-0017-r.

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Анотація:

Tar spot is a fungal disease complex of corn that has been destructive and yield limiting in Central and South America for nearly 50 years. Phyllachora maydis, the causal agent of tar spot, is an emerging corn pathogen in the United States, first reported in 2015 from major corn producing regions of the country. The tar spot disease complex putatively includes Monographella maydis (syn. Microdochium maydis), which increases disease damage through the development of necrotic halos surrounding tar spot lesions. These necrotic halos, termed “fish-eye” symptoms, have been identified in the United States, though Monographella maydis has not yet been confirmed. A recent surge in disease severity and loss of yield attributed to tar spot in the United States has led to increased attention and expanded efforts to understand the disease complex and how to manage it. In this study, next-generation sequencing of the internal transcribed spacer 1 (ITS1) ribosomal DNA was used to identify fungal taxa that distinguish tar spot infections with or without fish-eye symptoms. Fungal communities within tar spot only lesions were significantly different from communities having fish-eye symptoms. Two low abundance operational taxonomic units (OTUs) were identified as Microdochium sp., however, neither were associated with fish-eye symptom development. Interestingly, a single OTU was found to be significantly more abundant in fish-eye lesions compared with tar spot lesions and had a 91% ITS1 identity to Neottiosporina paspali. In addition, the occurrence of this OTU was positively associated with Phyllachora maydis fish-eye symptom networks, but not in tar spot symptom networks. Neottiosporina paspali has been reported to cause necrotic lesions on various monocot grasses. Whether the related fungus we detected is part of the tar-spot complex of corn and responsible for fish-eye lesions remains to be tested. Alternatively, many OTUs identified as Phyllachora maydis, suggesting that different isolate genotypes may be capable of causing both tar spot and fish-eye symptoms, independent of other fungi. We conclude that Monographella maydis is not required for fish-eye symptoms in tar spot of corn.

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Kleczewski, Nathan M., James Donnelly, and Russ Higgins. "Phyllachora maydis, Causal Agent of Tar Spot on Corn, Can Overwinter in Northern Illinois." Plant Health Progress 20, no. 3 (January 1, 2019): 178. http://dx.doi.org/10.1094/php-04-19-0030-br.

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Анотація:

Tar spot on corn (Zea mays L.), caused by the obligate fungal pathogen Phyllachora maydis Maubl., was first detected in the United States in 2015. Currently, the disease has been detected in 172 counties across Florida, Illinois, Indiana, Iowa, Michigan, Ohio, and Wisconsin. Although observations indicate that P. maydis likely overwinters in the region, this has not been conclusively proven. Samples of corn foliage heavily infected with P. maydis were recovered from two fields in northern Illinois in March 2019. Ascospores were extracted and were applied to corn seedlings under controlled greenhouse conditions. Symptoms of tar spot were observed 17 days after inoculation, and ascospores were extracted from stromata to confirm P. maydis. This is the first conclusive proof that P. maydis can overwinter the United States. We also present a preliminary greenhouse method that, if optimized, may be used to study this pathosystem under controlled conditions.

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Malvick, D. K., D. E. Plewa, D. Lara, N. M. Kleczewski, C. M. Floyd, and B. E. Arenz. "First Report of Tar Spot of Corn Caused by Phyllachora maydis in Minnesota." Plant Disease 104, no. 6 (June 2020): 1865. http://dx.doi.org/10.1094/pdis-10-19-2167-pdn.

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Ríos Herrera, Erika Natalia, Yisa María Ochoa Fuentes, Ernesto Cerna Chávez, Jerónimo Landeros Flores, Melchor Cepeda Siller, and Raúl Rodríguez Guerra. "Hongos asociados a la mancha de asfalto en el cultivo de maíz en México." Revista Mexicana de Ciencias Agrícolas 8, no. 2 (August 11, 2017): 457. http://dx.doi.org/10.29312/remexca.v8i2.65.

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El objetivo de este estudio fue identificar los hongos fitopatógenos asociados a la mancha de asfalto en maíz, en dos estados de la República Mexicana, Chiapas y Guerrero. Se realizaron muestreos dirigidos de hojas con síntomas de la enfermedad. La identificación preliminar de los patógenos asociados con los síntomas, se realizó mediante criterios morfológicos con claves dicotómicas y se corroboró mediante la amplificación de los espacios internos de transcripción (ITS) secuenciados y analizados en la base de datos del NCBI. En ambos estados se encontró a Phyllachora maydis, y Curvularia lunata como primer reporte de la asociación a este síndrome denominado mancha de asfalto.

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Lipps, Sarah, Damon Smith, Darcy Telenko, Pierce Paul, Nathan Kleczewski, and Tiffany Jamann. "Identification of resistance for Phyllachora maydis of maize in exotic‐derived germplasm." Crop Science 62, no. 2 (February 12, 2022): 859–66. http://dx.doi.org/10.1002/csc2.20709.

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Dalla Lana, F., D. E. Plewa, E. S. Phillippi, D. Garzonio, R. Hesterman, N. M. Kleczewski, and P. A. Paul. "First Report of Tar Spot of Maize (Zea mays), Caused by Phyllachora maydis, in Ohio." Plant Disease 103, no. 7 (July 2019): 1780. http://dx.doi.org/10.1094/pdis-01-19-0070-pdn.

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Ruhl, G., M. K. Romberg, S. Bissonnette, D. Plewa, T. Creswell, and K. A. Wise. "First Report of Tar Spot on Corn Caused by Phyllachora maydis in the United States." Plant Disease 100, no. 7 (July 2016): 1496. http://dx.doi.org/10.1094/pdis-12-15-1506-pdn.

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