Characterization of resistance of wheat varieties and breeding lines against common bunt (Tilletia tritici) and dwarf bunt (T. controversa)

Response of Lithuanian Winter Wheat Advanced Lines to Common Bunt (Tilletia tritici (BJERK.) WINT) The study was carried out at the Lithuanian Institute of Agriculture in an artificially inoculated nursery during 2006-2007. Resistance to common bunt in 2006 was tested for 71, in 2007 for 118 breeding lines of Lithuanian winter wheat from the competitive trial nursery. Additionally, 148 promising lines were selected and tested from the check nursery, which possessed some resistance in their pedigree ancestors. The average disease incidence in 2006 and 2007 was 80.9 and 63.5%, respectively. The very high infection level highlighted the genotypes with the most effective resistance under conditions highly favourable for common bunt. There were no lines without infected ears. Among the 29 breeding lines tested in the two years, two lines Bill/Aspirant and Dream/Lut.9329 were infected the least, 17.2% and 1.9% in 2006 and 18.5% and 7.8% in 2007, respectively. Most of the breeding lines were highly susceptible. Lines with disease incidence over 50% accounted for over 90% in 2006 and 80% in 2007 of the total lines tested. The most resistant lines had in their pedigrees the following resistance sources: genotypes Bill, Lut.9329, Strumok, Lut.9313, Lut.9358, Tommi as well as Dream, Haldor, 91002G2.1, 96/101, Bezenchiukskaya380.

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Identification and Characterization of Genes Differentially Expressed in the Resistance Reaction in Wheat Infected with Tilletia tritici, the Common Bunt Pathogen

BMB Reports ◽

10.5483/bmbrep.2005.38.4.420 ◽

2005 ◽

Vol 38 (4) ◽

pp. 420-431 ◽

Cited By ~ 26

Author(s):

Zhen-Xiang Lu ◽

Denis A. Gaudet ◽

Michele Frick ◽

Byron Puchalski ◽

Bernie Genswein ◽

...

Keyword(s):

Differentially Expressed ◽

Common Bunt ◽

Tilletia Tritici ◽

Resistance Reaction ◽

The Common ◽

Identification And Characterization

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Common bunt (Tilletia tritici) in diﬀerent wheat genotypes

Czech Journal of Genetics and Plant Breeding ◽

10.17221/6224-cjgpb ◽

2012 ◽

Vol 42 (Special Issue) ◽

pp. 16-19 ◽

Cited By ~ 2

Author(s):

S. Rajkovic ◽

N. Dolovac

Keyword(s):

Full Text ◽

Common Bunt ◽

Wheat Genotypes ◽

Tilletia Tritici

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Seeding date and location affect winter wheat infection by common bunt (Tilletia tritici and T. laevis) in western Canada

Canadian Journal of Plant Science ◽

10.4141/cjps2012-176 ◽

2013 ◽

Vol 93 (3) ◽

pp. 483-489 ◽

Cited By ~ 5

Author(s):

D. A. Gaudet ◽

B. J. Puchalski ◽

T. Despins ◽

C. McCartney ◽

J. G. Menzies ◽

...

Keyword(s):

Winter Wheat ◽

Control Measures ◽

Resistant Variety ◽

Western Canada ◽

Common Bunt ◽

Wheat Varieties ◽

Tilletia Tritici ◽

Seeding Date ◽

High Infection ◽

Winter Wheat Varieties

Gaudet, D. A., Puchalski, B. J., Despins, T., McCartney, C., Menzies, J. G. and Graf, R. J. 2013. Seeding date and location affect winter wheat infection by common bunt (Tilletia tritici and T. laevis) in western Canada. Can. J. Plant Sci. 93: 483–489. The majority of western Canadian winter wheat varieties are susceptible to common bunt (Tilletia tritici and T. laevis) and the risk to production, particularly in Saskatchewan and Manitoba, where the majority of production occurs, is unknown. Inoculated trials were employed to determine the effects of fall seeding date on bunt infection levels on one resistant and two susceptible winter wheat varieties at three locations in western Canada during three growing seasons from 2007/2008 to 2009/2010. Among the three locations, average infection levels were highest in Lethbridge, AB, followed by Glenlea, MB, and Saskatoon, SK. Later seeding resulted in high infection levels at all three locations in the susceptible varieties, particularly in Lethbridge, but high infection levels were observed in the earliest seeded treatments at both the Saskatchewan and Manitoba locations. The resistant variety Blizzard consistently exhibited infection levels of less than 3% infection across all environments. In a second test at conducted at Lethbridge, 10 of the 11 currently grown winter wheat varieties were susceptible to common bunt. These results indicate that there is a general risk of common bunt infection to winter wheat production across western Canada and that control measures must be taken until resistant varieties are developed.

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Defence responses and associated signalling pathways associated with the Bt10 gene in wheat for resistance to Tilletia tritici, the common bunt pathogen

Czech Journal of Genetics and Plant Breeding ◽

10.17221/6218-cjgpb ◽

2012 ◽

Vol 42 (Special Issue) ◽

pp. 4-4

Author(s):

D.A. Gaudet ◽

Z.-X. Lu ◽

M. Frick ◽

B. Puchalski ◽

A. Laroche

Keyword(s):

Full Text ◽

Signalling Pathways ◽

Common Bunt ◽

Tilletia Tritici ◽

Defence Responses ◽

The Common

see the full text

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Characterization of the microbial communities in wheat tissues and rhizosphere soil caused by dwarf bunt of wheat

Scientific Reports ◽

10.1038/s41598-021-85281-8 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Tongshuo Xu ◽

Wenli Jiang ◽

Dandan Qin ◽

Taiguo Liu ◽

Jianmin Zhang ◽

...

Keyword(s):

High Throughput Sequencing ◽

Rhizosphere Soil ◽

Microbial Composition ◽

Wheat Varieties ◽

Resistant Varieties ◽

Abundance And Diversity ◽

Dwarf Bunt ◽

Wheat Tissues

AbstractDwarf bunt of wheat, which is caused by Tilletia controversa J.G. Kühn, is a soil-borne disease which may lead up to an 80% loss of yield together with degradation of the quality of the wheat flour by production of a fishy smell. In this study, high-throughput sequencing technology was employed to characterize the microbial composition of wheat tissues (roots, spikes, first stem under the ear, and stem base) and rhizosphere soil of wheat varieties that are resistant and susceptible to T. controversa. We observed that the soil fungal community abundance and diversity were higher in resistant varieties than in susceptible varieties in both inoculated and uninoculated wheat, and the abundances of Sordariomycetes and Mortierellomycetes increased in the resistant varieties infected with T. controversa, while the abundances of Dothideomycetes and Bacteroidia increased in the susceptible varieties. Regarding the bacteria present in wheat tissues, the abundances of Chloroflexi, Bacteroidetes, Gemmatimonadetes, Verrucomicrobia and Acidobacteria in the ear and the first stem under the ear were higher than those in other tissues. Our results indicated that the abundances of Sordariomycetes, Mortierellomycetes, Leotiomycetes, Chryseobacterium and Massilia were higher in T. controversa-infected resistant varieties than in their controls, that Dothideomycetes, Bacteroidia, Nocardioides and Pseudomonas showed higher abundances in T. controversa-infected susceptible varieties, and that Curtobacterium, Exiguobacterium, Planococcus, and Pantoea may have higher abundances in both T. controversa-infected susceptible and resistant varieties than in their own controls.

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