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9 results on '"Widrig, Victoria"'

3. Population genomic analysis of Aegilops tauschii identifies targets for bread wheat improvement

Author

Gaurav, Kumar, Arora, Sanu, Silva, Paula, Sánchez-Martín, Javier, Horsnell, Richard, Gao, Liangliang, Brar, Gurcharn S., Widrig, Victoria, John Raupp, W., Singh, Narinder, Wu, Shuangye, Kale, Sandip M., Chinoy, Catherine, Nicholson, Paul, Quiroz-Chávez, Jesús, Simmonds, James, Hayta, Sadiye, Smedley, Mark A., Harwood, Wendy, Pearce, Suzannah, Gilbert, David, Kangara, Ngonidzashe, Gardener, Catherine, Forner-Martínez, Macarena, Liu, Jiaqian, Yu, Guotai, Boden, Scott A., Pascucci, Attilio, Ghosh, Sreya, Hafeez, Amber N., O’Hara, Tom, Waites, Joshua, Cheema, Jitender, Steuernagel, Burkhard, Patpour, Mehran, Justesen, Annemarie Fejer, Liu, Shuyu, Rudd, Jackie C., Avni, Raz, Sharon, Amir, Steiner, Barbara, Kirana, Rizky Pasthika, Buerstmayr, Hermann, Mehrabi, Ali A., Nasyrova, Firuza Y., Chayut, Noam, Matny, Oadi, Steffenson, Brian J., Sandhu, Nitika, Chhuneja, Parveen, Lagudah, Evans, Elkot, Ahmed F., Tyrrell, Simon, Bian, Xingdong, Davey, Robert P., Simonsen, Martin, Schauser, Leif, Tiwari, Vijay K., Randy Kutcher, H., Hucl, Pierre, Li, Aili, Liu, Deng-Cai, Mao, Long, Xu, Steven, Brown-Guedira, Gina, Faris, Justin, Dvorak, Jan, Luo, Ming-Cheng, Krasileva, Ksenia, Lux, Thomas, Artmeier, Susanne, Mayer, Klaus F. X., Uauy, Cristobal, Mascher, Martin, Bentley, Alison R., Keller, Beat, Poland, Jesse, and Wulff, Brande B. H.

Published
2022
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6. The AvrPm3-Pm3 effector-NLR interactions control both race-specific resistance and host-specificity of cereal mildews on wheat

Author

Bourras, Salim, Kunz, Lukas, Xue, Minfeng, Praz, Coraline Rosalie, Müller, Marion Claudia, Kälin, Carol, Schläfli, Michael, Ackermann, Patrick, Flückiger, Simon, Parlange, Francis, Menardo, Fabrizio, Schaefer, Luisa Katharina, Ben-David, Roi, Roffler, Stefan, Oberhaensli, Simone, Widrig, Victoria, Lindner, Stefan, Isaksson, Jonatan, Wicker, Thomas, Yu, Dazhao, and Keller, Beat

Published
2019
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7. A fictional field case study to understand the genetic basis of host-fungal pathogen interactions using the wheat powdery mildew-wheat pathosystem.

Author

Sotiropoulos, Alexandros G., Sánchez-Martín, Javier, Widrig, Victoria, Isaksson, Jonatan, Bernasconi, Zoe, Koller, Teresa, Bearth, Giulia, Herren, Gerhard, Wicker, Thomas, and Keller, Beat

Subjects
*DISEASE resistance of plants, *PATHOGENIC fungi, *ERYSIPHE graminis, *PHYTOPATHOGENIC fungi, *PLANT-fungus relationships, *POWDERY mildew diseases
Abstract

Wheat powdery mildew is an important fungal pathogen of wheat with an obligatory biotrophic lifestyle (a parasite that can only develop on a living host). We investigated the genetics of this host-pathogen interaction by using phenotyping and PCR assays to detect genes in both wheat and powdery mildew, which are known determinants of the outcome of these interactions (resistance or susceptibility). The mildew genes increase or decrease the pathogen virulence, while the wheat genes provide specific immunity against the mildew isolates expressing the corresponding avirulence genes. Here, we describe the experiments performed to understand the genetic basis of race-specific resistance of wheat to powdery mildew, which is part of the course 'Mechanisms of Plant Disease Resistance against Fungal Pathogens' designed for advanced third-year students of biology at the University of Zurich, Switzerland. In this course, students learn how plants and their pathogenic fungi engage in an arms race against each other to survive. [ABSTRACT FROM AUTHOR]

Published
2024
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8. Domestication of High-Copy Transposons Underlays the Wheat Small RNA Response to an Obligate Pathogen.

Author

Poretti, Manuel, Praz, Coraline Rosalie, Meile, Lukas, Kälin, Carol, Schaefer, Luisa Katharina, Schläfli, Michael, Widrig, Victoria, Sanchez-Vallet, Andrea, Wicker, Thomas, and Bourras, Salim

Abstract

Plant genomes have evolved several evolutionary mechanisms to tolerate and make use of transposable elements (TEs). Of these, transposon domestication into cis-regulatory and microRNA (miRNA) sequences is proposed to contribute to abiotic/biotic stress adaptation in plants. The wheat genome is derived at 85% from TEs, and contains thousands of miniature inverted-repeat transposable elements (MITEs), whose sequences are particularly prone for domestication into miRNA precursors. In this study, we investigate the contribution of TEs to the wheat small RNA immune response to the lineage-specific, obligate powdery mildew pathogen. We show that MITEs of the Mariner superfamily contribute the largest diversity of miRNAs to the wheat immune response. In particular, MITE precursors of miRNAs are wide-spread over the wheat genome, and highly conserved copies are found in the Lr34 and QPm.tut-4A mildew resistance loci. Our work suggests that transposon domestication is an important evolutionary force driving miRNA functional innovation in wheat immunity. [ABSTRACT FROM AUTHOR]

Published
2020
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9. Domestication of high-copy transposons underlays the wheat small RNA response to an obligate pathogen

Author

Poretti, Manuel, Praz, Coraline R., Meile, Lukas, Kälin, Carol, Schaefer, Luisa K., Schläfli, Michael, Widrig, Victoria, Sánchez-Vallet, Andrea, Wicker, Thomas, and Bourras, Salim

Subjects
2. Zero hunger, Powdery mildew, small RNAs, Wheat, food and beverages, Transposable elements
Abstract

Plant genomes have evolved several evolutionary mechanisms to tolerate and make use of transposable elements (TEs). Of these, transposon domestication into cis-regulatory and microRNA (miRNA) sequences is proposed to contribute to abiotic/biotic stress adaptation in plants. The wheat genome is derived at 85% from TEs, and contains thousands of miniature inverted-repeat transposable elements (MITEs), whose sequences are particularly prone for domestication into miRNA precursors. In this study, we investigate the contribution of TEs to the wheat small RNA immune response to the lineage-specific, obligate powdery mildew pathogen. We show that MITEs of the Mariner superfamily contribute the largest diversity of miRNAs to the wheat immune response. In particular, MITE precursors of miRNAs are wide-spread over the wheat genome, and highly conserved copies are found in the Lr34 and QPm.tut-4A mildew resistance loci. Our work suggests that transposon domestication is an important evolutionary force driving miRNA functional innovation in wheat immunity., Molecular Biology and Evolution, 37 (3), ISSN:0737-4038, ISSN:1537-1719

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