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  • 1
    In: Scientific Reports, Springer Science and Business Media LLC, Vol. 10, No. 1 ( 2020-12-09)
    Abstract: Wheat dwarf bunt is caused by Tilletia controversa Kühn, which is one of the most destructive diseases of wheat worldwide. To explore the interaction of T. controversa and wheat, we analysed the transcriptome profile of spikes of the susceptible wheat cultivar Dongxuan 3, which was subjected to a T. controversa infection and a mock infection. The results obtained from a differential expression analysis of T. controversa -infected plants compared with mock-infected ones showed that 10,867 out of 21,354 genes were upregulated, while 10,487 genes were downregulated, and these genes were enriched in 205 different pathways. Our findings demonstrated that the genes associated with defence against diseases, such as PR-related genes, WRKY transcription factors and mitogen-activated protein kinase genes, were more highly expressed in response to T. controversa infection. Additionally, a number of genes related to physiological attributes were expressed during infection. Three pathways were differentiated based on the characteristics of gene ontology classification. KEGG enrichment analysis showed that twenty genes were expressed differentially during the infection of wheat with T. controversa . Notable changes were observed in the transcriptomes of wheat plants after infection. The results of this study may help to elucidate the mechanism governing the interactions between this pathogen and wheat plants and may facilitate the development of new methods to increase the resistance level of wheat against T. controversa , including the overexpression of defence-related genes.
    Type of Medium: Online Resource
    ISSN: 2045-2322
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2020
    detail.hit.zdb_id: 2615211-3
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  • 2
    Online Resource
    Online Resource
    Elsevier BV ; 2021
    In:  Journal of Microbiological Methods Vol. 189 ( 2021-10), p. 106313-
    In: Journal of Microbiological Methods, Elsevier BV, Vol. 189 ( 2021-10), p. 106313-
    Type of Medium: Online Resource
    ISSN: 0167-7012
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2021
    detail.hit.zdb_id: 1483012-7
    SSG: 12
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  • 3
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2023
    In:  Tropical Plant Pathology Vol. 48, No. 2 ( 2023-02-09), p. 174-181
    In: Tropical Plant Pathology, Springer Science and Business Media LLC, Vol. 48, No. 2 ( 2023-02-09), p. 174-181
    Abstract: Tilletia controversa Kühn is the causal agent of dwarf bunt disease in wheat. Understanding the infection of T. controversa is of practical and scientific importance for disease management. Here, we used scanning electron microscopy to characterize the histological changes at the seedling (Z12) and stem elongation stages (Z31) in resistant and susceptible wheat cultivars after T. controversa infection. At the seedling stage (Z12), the structure of stem and mesophyll cells slightly deformed after pathogen infection, but this deformation was greater in the susceptible cultivar than in the resistant cultivar. At the stem elongation stage (Z31), the structures of root parenchyma and epidermal cells were deformed more than at the seedling stage (Z12) for both the resistant and susceptible cultivars.
    Type of Medium: Online Resource
    ISSN: 1983-2052
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2023
    detail.hit.zdb_id: 2519866-X
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  • 4
    In: Microbial Ecology, Springer Science and Business Media LLC, Vol. 82, No. 3 ( 2021-10), p. 736-745
    Abstract: Tilletia foetida (syn. T. laevis ) leads to wheat common bunt, a worldwide disease that can lead to 80% yield loss and even total loss of production, together with degrading the quality of grains and flour by producing a rotten fish smell. To explore the potential microbial community that may contribute to the control of soil- and seed-borne pathogens, in this study, we analyzed the effects of the plant pathogenic fungus T. foetida on rhizosphere soil microorganisms in wheat seeds coated with different concentrations of a fungicide (Jianzhuang) used to control the disease. To analyze the bacterial and fungal abundance in T. foetida -infected and mock-infected plants, the microorganisms were sequenced using high-throughput HiSeq 2500 gene sequencing. The results showed that bacterial communities, including Verrucomicrobia , Patescibacteria , Armatimonadetes , Nitrospirae , Fibrobacteres , Chlamydiae , and Hydrogenedentes , and fungal communities, including Basidiomycota and Ciliophora , were more prevalent in the mock group than in the T. foetida -infected group, which may contribute to the control of wheat common bunt. Moreover, cluster and PCoA analysis revealed that replicates of the same samples were clustered together, and these results were also found in the distance index within-group analysis for bacterial and fungal communities in the T. foetida -infected and mock groups.
    Type of Medium: Online Resource
    ISSN: 0095-3628 , 1432-184X
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2021
    detail.hit.zdb_id: 1462065-0
    detail.hit.zdb_id: 188257-0
    SSG: 12
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  • 5
    In: Microbiology Spectrum, American Society for Microbiology, Vol. 11, No. 1 ( 2023-02-14)
    Abstract: Wheat dwarf bunt leads to the replacement of seeds with fungal galls containing millions of teliospores of the pathogen Tilletia controversa Kühn. As one of the most devastating internationally quarantined wheat diseases, wheat dwarf bunt spreads to cause distant outbreaks by seeds containing teliospores. In this study, based on a combination of amplicon sequencing and isolation approaches, we analyzed the seed microbiome signatures of endophytes between resistant and susceptible cultivars after infection with T. controversa . Among 310 bacterial species obtained only by amplicon sequencing and 51 species obtained only by isolation, we found 14 overlapping species by both methods; we detected 128 fungal species only by amplicon sequencing, 56 only by isolation, and 5 species by both methods. The results indicated that resistant uninfected cultivars hosted endophytic communities that were much more stable and beneficial to plant health than those in susceptible infected cultivars. The susceptible group showed higher diversity than the resistant group, the infected group showed more diversity than the uninfected group, and the microbial communities in seeds were related to infection or resistance to the pathogen. Some antagonistic microbes significantly suppressed the germination rate of the pathogen’s teliospores, providing clues for future studies aimed at developing strategies against wheat dwarf bunt. Collectively, this research advances the understanding of the microbial assembly of wheat seeds upon exposure to fungal pathogen ( T. controversa ) infection. IMPORTANCE This is the first study on the microbiome signature of endophytes in wheat seed response to wheat dwarf bunt caused by Tilletia controversa Kühn. Some antagonistic microbes suppressed the germination of teliospores of the pathogen significantly, which will provide clues for future studies against wheat dwarf bunt. Collectively, this research first advances the understanding of the microbial assembly of wheat seed upon exposure to the fungal pathogen ( T. controversa ) infection.
    Type of Medium: Online Resource
    ISSN: 2165-0497
    Language: English
    Publisher: American Society for Microbiology
    Publication Date: 2023
    detail.hit.zdb_id: 2807133-5
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