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2 results on '"Gendall T"'

1. Molecular analysis of flowering time and vernalization response in arabidopsis, a minireview

Author

Dean, C., Dijkwel, P., Duroux, M., Gendall, T., Hutchison, C., Johanson, U., Levy, Y., Lister, C., Macknight, R., Smart, B., Simpson, G., Sivadon, Pierre, Torney, K., West, J., Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux (IPREM), and Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDV.BBM.GTP]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Genomics [q-bio.GN], fungi, food and beverages
Abstract

cited By 0; International audience; The complex network of pathways that regulate flowering time in Arabidopsis is being dissected using genetic and molecular analyses. The Dean group has focused on those pathways regulating whether plants require vernalization for early flowering. We also characterising genes that mediate the vernalization response in order to understand the molecular basis of the acceleration of flowering by cold temperature. © 2000 Elsevier B.V. All rights reserved.

Published
2000
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2. Genome-wide association reveals a complex architecture for rust resistance in 2300 worldwide bread wheat accessions screened under various Australian conditions.

Author

Joukhadar R, Hollaway G, Shi F, Kant S, Forrest K, Wong D, Petkowski J, Pasam R, Tibbits J, Bariana H, Bansal U, Spangenberg G, Daetwyler H, Gendall T, and Hayden M

Subjects
Australia, Basidiomycota pathogenicity, Chromosome Mapping, Crosses, Genetic, Genetic Association Studies, Linkage Disequilibrium, Phenotype, Plant Diseases microbiology, Quantitative Trait Loci, Triticum microbiology, Disease Resistance genetics, Environment, Genetics, Population, Plant Diseases genetics, Triticum genetics
Abstract

We utilized 2300 wheat accessions including worldwide landraces, cultivars and primary synthetic-derived germplasm with three Australian cultivars: Annuello, Yitpi and Correll, to investigate field-based resistance to leaf (Lr) rust, stem (Sr) rust and stripe (Yr) rust diseases across a range of Australian wheat agri-production zones. Generally, the resistance in the modern Australian cultivars, synthetic derivatives, South and North American materials outperformed other geographical subpopulations. Different environments for each trait showed significant correlations, with average r values of 0.53, 0.23 and 0.66 for Lr, Sr and Yr, respectively. Single-trait genome-wide association studies (GWAS) revealed several environment-specific and multi-environment quantitative trait loci (QTL). Multi-trait GWAS confirmed a cluster of Yr QTL on chromosome 3B within a 4.4-cM region. Linkage disequilibrium and comparative mapping showed that at least three Yr QTL exist within the 3B cluster including the durable rust resistance gene Yr30. An Sr/Lr QTL on chromosome 3D was found mainly in the synthetic-derived germplasm from Annuello background which is known to carry the Agropyron elongatum 3D translocation involving the Sr24/Lr24 resistance locus. Interestingly, estimating the SNP effects using a BayesR method showed that the correlation among the highest 1% of QTL effects across environments (excluding GWAS QTL) had significant correlations, with average r values of 0.26, 0.16 and 0.55 for Lr, Sr and Yr, respectively. These results indicate the importance of small effect QTL in achieving durable rust resistance which can be captured using genomic selection.

Published
2020
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