scholarly journals Annual dynamics of Zymoseptoria tritici populations in wheat cultivar mixtures: a compromise between the efficiency and durability of a recently broken‐down resistance gene?

2021 ◽  
Author(s):  
Carolina Orellana‐Torrejon ◽  
Tiphaine Vidal ◽  
Anne‐Lise Boixel ◽  
Sandrine Gélisse ◽  
Sébastien Saint‐Jean ◽  
...  
Keyword(s):  
Resistance Gene ◽  
Wheat Cultivar ◽  
Zymoseptoria Tritici ◽  
Cultivar Mixtures

scholarly journals Annual dynamics of Zymoseptoria tritici populations in wheat cultivar mixtures: a compromise between the efficiency and durability of a recently broken-down resistance gene?

2021 ◽  
Author(s):  
Carolina Orellana-Torrejon ◽  
Tiphaine Vidal ◽  
Anne-Lise Boixel ◽  
Sandrine Gélisse ◽  
Sébastien Saint-Jean ◽  
...  
Keyword(s):  
Resistance Gene ◽  
Fungal Pathogen ◽  
Current Knowledge ◽  
Natural Populations ◽  
Pure Stand ◽  
Zymoseptoria Tritici ◽  
Trade Offs ◽  
Pathogen Populations ◽  
Dual Objectives ◽  
Cultivar Mixtures

AbstractCultivar mixtures slow polycyclic epidemics but may also modify the evolution of pathogen populations by diversifying the selection pressures exerted by their plant hosts at field scale. We compared the dynamics of natural populations of the fungal pathogen Zymoseptoria tritici in pure stands and in three binary mixtures of wheat cultivars (one susceptible cultivar and one cultivar carrying the recently broken-down Stb16q gene) over two annual field epidemics. We combined analyses of population ‘size’ based on disease severity, and of population ‘composition’ based on assessments of changes in the frequency of virulence against Stb16q in seedling assays with more than 3000 strains. In the field, disease levels were lower in mixtures, with each cultivar providing the other with reciprocal protection. The three cultivar proportions in the mixtures (0.25, 0.5 and 0.75) modulated the decrease in (i) the size of the pathogen population relative to the two pure stands, (ii) the size of the virulent subpopulation, and (iii) the frequency of virulence relative to the pure stand of the cultivar carrying Stb16q. Our findings suggest that optimal proportions may differ slightly between the three indicators considered. We identified potential trade-offs that should be taken into account when deploying a resistance gene in cultivar mixtures: between the dual objectives ‘efficacy’ and ‘durability’, and between the ‘size’ and ‘frequency’ of the virulent subpopulation. Based on current knowledge, it remains unclear whether virulent subpopulation size or frequency has the largest influence on interepidemic virulence transmission.

The Hessian fly recessive resistance gene h4 mapped to chromosome 1A of the wheat cultivar ‘Java’ using genotyping-by-sequencing

2020 ◽  
Vol 133 (10) ◽  
pp. 2927-2935 ◽  
Author(s):  
Fuan Niu ◽  
Yunfeng Xu ◽  
Xuming Liu ◽  
Lanfei Zhao ◽  
Amy Bernardo ◽  
...  
Keyword(s):  
Resistance Gene ◽  
Wheat Cultivar ◽  
Genotyping By Sequencing ◽  
Hessian Fly ◽  
Recessive Resistance ◽  
Recessive Resistance Gene

scholarly journals Characterization of the Powdery Mildew Resistance Gene in the Elite Wheat Cultivar Jimai 23 and Its Application in Marker-Assisted Selection

2020 ◽  
Vol 11 ◽  
Author(s):  
Mengshu Jia ◽  
Hongxing Xu ◽  
Cheng Liu ◽  
Ruixi Mao ◽  
Haosheng Li ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Resistance Gene ◽  
Marker Assisted Selection ◽  
Powdery Mildew Resistance ◽  
Wheat Cultivar ◽  
Powdery Mildew Resistance Gene ◽  
Mildew Resistance

scholarly journals Breeding wheat lines resistant to wheat yellow mosaic virus and localization of the resistance gene (YmMD) derived from wheat cultivar ‘Madsen’

2010 ◽  
Vol 12 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Toru Takeuchi ◽  
Sinya Munekata ◽  
Takako Suzuki ◽  
Keiichi Senda ◽  
Harukuni Horita ◽  
...  
Keyword(s):  
Mosaic Virus ◽  
Resistance Gene ◽  
Wheat Cultivar ◽  
Yellow Mosaic Virus ◽  
Wheat Yellow Mosaic Virus ◽  
Wheat Lines

scholarly journals The performance of spring wheat cultivar mixtures under conventional and organic management in Western Canada

age ◽  
2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Hua Chen ◽  
Khang Nguyen ◽  
Muhammad Iqbal ◽  
Brian L. Beres ◽  
Pierre J. Hucl ◽  
...  
Keyword(s):  
Spring Wheat ◽  
Wheat Cultivar ◽  
Western Canada ◽  
Organic Management ◽  
Spring Wheat Cultivar ◽  
Cultivar Mixtures

Unfolding the potential of wheat cultivar mixtures: A meta-analysis perspective and identification of knowledge gaps

2018 ◽  
Vol 221 ◽  
pp. 298-313 ◽  
Author(s):  
J. Borg ◽  
L.P. Kiær ◽  
C. Lecarpentier ◽  
I. Goldringer ◽  
A. Gauffreteau ◽  
...  
Keyword(s):  
Wheat Cultivar ◽  
Meta Analysis ◽  
Knowledge Gaps ◽  
Cultivar Mixtures

scholarly journals Genetics and Molecular Mapping of a High-Temperature Resistance Gene to Stripe Rust in Seeding-Stage in Winter Wheat Cultivar Lantian 1

2013 ◽  
Vol 12 (6) ◽  
pp. 1018-1025 ◽  
Author(s):  
Dong-fang MA ◽  
Jin-xue JING ◽  
Dong-yuan HOU ◽  
Qiang LI ◽  
Xin-li ZHOU ◽  
...  
Keyword(s):  
High Temperature ◽  
Winter Wheat ◽  
Resistance Gene ◽  
Stripe Rust ◽  
Molecular Mapping ◽  
Wheat Cultivar ◽  
Winter Wheat Cultivar ◽  
Temperature Resistance ◽  
High Temperature Resistance

Effects of Two-Component Wheat Cultivar Mixtures on Stripe Rust Severity

1996 ◽  
Vol 86 (4) ◽  
pp. 347 ◽  
Author(s):  
Shamsul Akanda
Keyword(s):  
Stripe Rust ◽  
Wheat Cultivar ◽  
Two Component ◽  
Rust Severity ◽  
Cultivar Mixtures

Chromosomal location and molecular mapping of a tan spot resistance gene in the winter wheat cultivar Red Chief

2010 ◽  
Vol 51 (3) ◽  
pp. 235-242 ◽  
Author(s):  
W. Tadesse ◽  
M. Schmolke ◽  
S. L. K. Hsam ◽  
V. Mohler ◽  
G. Wenzel ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Resistance Gene ◽  
Chromosomal Location ◽  
Molecular Mapping ◽  
Wheat Cultivar ◽  
Tan Spot ◽  
Winter Wheat Cultivar
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