Population genetic structure of Microdochium majus and Microdochium nivale associated with foot rot of cereals in the Czech Republic and adaptation to penthiopyrad

Matušinsky, Pavel; Svobodová, Leona; Svačinová, Ivana; Havis, Neil D.; Heß, Michael; Tvarůžek, L.

doi:10.1007/s10658-019-01737-8

Cited by 5 publications

(4 citation statements)

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“…8 ). These variations in fungicide sensitivity could be attributed to genetic structural changes, introducing bias in chemical control efficacy ( Matušinsky et al 2019 ). Furthermore, the response of the same pathogen to fungicides can vary amongst regions.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, the response of the same pathogen to fungicides can vary amongst regions. For example, the DMI fungicides, tebuconazole and metconazole, were reported to be ineffective against M. nivale in the Czech Republic and France ( Ioos et al 2005 ; Matušinsky et al 2019 ). Similarly, M. nivale exhibited sensitivity to SDHI fungicides, including pydiflumetofen, fluxapyroxad and penthiopyrad, in vitro, but these fungicides were ineffective in providing acceptable control under field conditions in the USA ( Hockemeyer and Koch 2022 ).…”

Section: Discussionmentioning

confidence: 99%

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Identification and fungicide sensitivity of Microdochium chrysopogonis (Ascomycota, Amphisphaeriaceae), a new species causing tar spot of Chrysopogon zizanioides in southern China

Lu,

Mai,

Tan

et al. 2023

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Vetiver grass (Chrysopogon zizanioides) has received extensive attention in recent years due to its diverse applications in soil and water conservation, heavy metal remediation, as well as essential oil and phenolic acids extraction. In 2019, the emergence of tar spot disease on C. zizanioides was documented in Zhanjiang, Guangdong Province, China. Initially, the disease manifested as black ascomata embedded within leaf tissue, either scattered or clustered on leaf surfaces. Subsequently, these ascomata became surrounded by fisheye lesions, characterised by brown, elliptical, necrotic haloes, which eventually coalesced, resulting in leaf withering. Koch’s postulates demonstrated that the fungus isolated from these lesions was the causal agent. Microscopic examination showed that the pathogen morphologically belonged to Microdochium. The phylogenetic tree inferred from the combined ITS, LSU, tub2 and rpb2 sequences revealed the three isolates including GDMCC 3.683, LNU-196 and LNU-197 to be a novel species of Microdochium. Combining the results of phylogenetic, pathogenicity and morphological analyses, we propose a new species named M. chrysopogonis as the causal agent of C. zizanioides in southern China. The optimum growth temperature for M. chrysopogonis was determined to be 30 °C. The in vitro fungicide sensitivity of M. chrysopogonis was determined using a mycelial growth assay. Four demethylation-inhibiting (DMI) fungicides, including difenoconazole, flusilazole, propiconazole and tebuconazole and one methyl benzimidazole carbamate (MBC) fungicide, carbendazim, were effective against M. chrysopogonis, with mean 50% effective concentration (EC50) values of 0.077, 0.011, 0.004, 0.024 and 0.007 μg/ml, respectively. These findings provide essential references for the precise diagnosis and effective management of M. chrysopogonis.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Identification and fungicide sensitivity of Microdochium chrysopogonis (Ascomycota, Amphisphaeriaceae), a new species causing tar spot of Chrysopogon zizanioides in southern China

Lu,

Mai,

Tan

et al. 2023

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“…На рисунке 2 представлена картина поражения листьев M. nivale на отдельных сортах ячменя озимого. Балл поражения Степень устойчивости КА-12 5 4 У КА-7 5 5 СВ Версаль 6 4 У Агродеум 5 5 СВ Кондрат 1 4 У Лайс 6 5 СВ Сармат 1 4 У Гордей 1 5 СВ Кубагро-1 5 4 У Рандеву 3 5 СВ КА-5/КА-3 5 4 У Тимофей 3 5 СВ КА-5/КА-1 5 4 У Мадар Выделенные устойчивые к M. nivale сорта и сортообразцы зерновых колосовых культур представляют практический интерес и могут быть рекомендованы для возделывания в районах с широким распространением патогена и в селекционной работе как источники устойчивости.…”

Section: Estimation Of Immunity Of the Winter Grain Varieties Sown In The South Of Russia To The Pink Snow Mold Pathogen (Microdochium Niunclassified

Estimation of immunity of the winter grain varieties sown in the south of Russia to the pink snow mold pathogen (<i>Microdochium nivale</i>)

Волкова

Yakhnik

Tarancheva

2021

Zernovoe hozâjstvo Rossii

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The purpose of the current study was to estimate immunity of the winter grain varieties sown in the south of Russia to the pink snow mold pathogen (Microdochium nivale (Fr.) Samuels & I.C. Hallett) in the sprouting phase. For resistance to M. nivale there have been studied 35 winter wheat varieties sown in the south of the Russian Federation, 19 winter barley varieties and 4 variety samples and 13 winter triticale varieties developed in the LLC “Agrostandart”, FSBSI RCG named after P.P. Lukyanenko, FSBSI FRC Kabardino-Balkarian Research Center of the RAS, FSBSI “ARC Donskoy”, FSBSI “North Caucasian FRSC”, FSBSI “FRAC”, NPO “KUBANZERNO”, FSBEI HE “KubSAU”. There has been substantiated a methodological approach to conducting research on immunological estimation of winter grain varieties in the laboratory conditions. The optimal temperature for the cultivation of the pathogen was +10/+15 °C (with a photoperiod of 12 hours). There was found that the required temperature to stimulate sporulation was +5 °C. The optimum temperature for the incubation period was +5 °C at 85% humidity. There has been established that the only winter wheat variety ‘Dolya’ had a very high resistance degree to pink snow mold; the varieties ‘Antonina’ and ‘Brigada’ had a high resistance degree; 21 varieties were classified as resistant. M. nivale resistance was demonstrated by 9 winter barley varieties and 3 variety samples (‘Versal’, ‘Iosif’, ‘KA-12’, ‘KA-5/KA-3’, ‘KA-5/KA-1’, ‘Karrera’, ‘Kondrat’, ‘Kubagro-1’, ‘Lazar’, ‘Master’, ‘Romans’, ‘Sarmat’). Among the studied winter triticale varieties, 4 varieties had a very high resistance degree (‘Argus’, ‘Slon’, ‘Tikhon’, ‘Ullubiy’) and 9 varieties had a high resistance degree to pink snow mold pathogen (‘Aznavur’, ‘Argo’, ‘Arioso’, ‘Valentin 90’, ‘Iliya’, ‘Sotnik’,’ Styuard’, ‘Forte’, ‘Khleborob’).

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“…Glynn & S.G. Edwards (Glynn et al 2005 ; Watanabe et al 2011 ; Hayashi et al 2014 ). M. nivale and M. majus can be differentiated by morphological means (Gerlach and Nirenberg 1982 ; Lees et al 1995 ; Hernández-Restrepo et al 2016 ), quantitative real-time PCR (Nielsen et al 2013 ; Sonia et al 2018 ), molecular markers (Hayashi et al 2014 ; Matušinsky et al 2019 ), and gene-sequence analyses (Einax and Voigt 2003 ; Jewell and Hsiang 2013 ). Very recently, Abdelhalim et al ( 2020 ) demonstrated that M. nivale isolates revealed genetic differences related to different host plants (grasses vs .…”

Section: Taxonomy Host Range and Economic Importancementioning

confidence: 99%

Snow mold of winter cereals: a complex disease and a challenge for resistance breeding

et al. 2020

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Key message Snow mold resistance is a complex quantitative trait highly affected by environmental conditions during winter that must be addressed by resistance breeding. Abstract Snow mold resistance in winter cereals is an important trait for many countries in the Northern Hemisphere. The disease is caused by at least four complexes of soilborne fungi and oomycetes of which Microdochium nivale and M. majus are among the most common pathogens. They have a broad host range covering all winter and spring cereals and can basically affect all plant growth stages and organs. Their attack leads to a low germination rate, and/or pre- and post-emergence death of seedlings after winter and, depending on largely unknown environmental conditions, also to foot rot, leaf blight, and head blight. Resistance in winter wheat and triticale is governed by a multitude of quantitative trait loci (QTL) with mainly additive effects highly affected by genotype × environment interaction. Snow mold resistance interacts with winter hardiness in a complex way leading to a co-localization of resistance QTLs with QTLs/genes for freezing tolerance. In practical breeding, a multistep procedure is necessary with (1) freezing tolerance tests, (2) climate chamber tests for snow mold resistance, and (3) field tests in locations with and without regularly occurring snow cover. In the future, resistance sources should be genetically characterized also in rye by QTL mapping or genome-wide association studies. The development of genomic selection procedures should be prioritized in breeding research.

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Population genetic structure of Microdochium majus and Microdochium nivale associated with foot rot of cereals in the Czech Republic and adaptation to penthiopyrad

Cited by 5 publications

References 45 publications

Identification and fungicide sensitivity of Microdochium chrysopogonis (Ascomycota, Amphisphaeriaceae), a new species causing tar spot of Chrysopogon zizanioides in southern China

Identification and fungicide sensitivity of Microdochium chrysopogonis (Ascomycota, Amphisphaeriaceae), a new species causing tar spot of Chrysopogon zizanioides in southern China

Estimation of immunity of the winter grain varieties sown in the south of Russia to the pink snow mold pathogen (<i>Microdochium nivale</i>)

Snow mold of winter cereals: a complex disease and a challenge for resistance breeding

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Population genetic structure of Microdochium majus and Microdochium nivale associated with foot rot of cereals in the Czech Republic and adaptation to penthiopyrad

Cited by 5 publications

References 45 publications

﻿Identification and fungicide sensitivity of Microdochium chrysopogonis (Ascomycota, Amphisphaeriaceae), a new species causing tar spot of Chrysopogon zizanioides in southern China

﻿Identification and fungicide sensitivity of Microdochium chrysopogonis (Ascomycota, Amphisphaeriaceae), a new species causing tar spot of Chrysopogon zizanioides in southern China

Estimation of immunity of the winter grain varieties sown in the south of Russia to the pink snow mold pathogen (<i>Microdochium nivale</i>)

Snow mold of winter cereals: a complex disease and a challenge for resistance breeding

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Identification and fungicide sensitivity of Microdochium chrysopogonis (Ascomycota, Amphisphaeriaceae), a new species causing tar spot of Chrysopogon zizanioides in southern China

Identification and fungicide sensitivity of Microdochium chrysopogonis (Ascomycota, Amphisphaeriaceae), a new species causing tar spot of Chrysopogon zizanioides in southern China