Screening for loose smut resistance in wheat is difficult. Selecting lines with DNA markers linked to loose smut resistance would be more reliable and less costly. Molecular markers linked to a race T10 loose smut resistance gene were identified using a F6 single seed descent segregating population. A RAPD marker and a RFLP marker were located on opposite flanks of the resistance gene and were shown to be loosely linked. The RAPD marker was converted to a user friendly polymorphic SCAR marker that represented a single genetically defined locus in hexaploid wheat. Using these two bracketing markers simultaneously, the error rate for T10 resistance selection due to crossing-over was reduced to 4%. These markers can be used for a faster and more reliable selection of T10 resistant plants than previous conventional loose smut ratings.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1139/g97-025 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Optimization of Inoculum Concentration for Screening -Mediated Loose Smut Resistance in Barley Reveals a Resistance Reaction that Disrupts Seed Germination and Suggests a Role for Abscisic Acid in Disease Development.
Phytopathology
June 2023
Department of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada.
Article Synopsis
- Barley loose smut is largely controlled by a specific gene, but certain inoculation methods can lead to poor seed quality and germination issues, especially in carrier and susceptible genotypes.
- Research compared a carrier strain (TR11698) and a susceptible strain (CDC Austenson), finding that lower inoculum concentrations improved seed traits and increased infection in the susceptible strain, while the carrier showed no infection but still had low germination rates.
- The study suggests that lowering inoculum levels can enhance seed appearance and germination in susceptible plants, while the carrier's seedling issues indicate a resistance mechanism, with increased abscisic acid levels potentially aiding in pathogen survival.
Identification of Putative SNP Markers Associated with Resistance to Egyptian Loose Smut Race(s) in Spring Barley.
Genes (Basel)
June 2022
Resources Genetics and Reproduction, Department Genebank, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr. 3, OT Gatersleben, D-06466 Stadt Seeland, Germany.
Loose smut (LS) disease is a serious problem that affects barley yield. Breeding of resistant cultivars and identifying new genes controlling LS has received very little attention. Therefore, it is important to understand the genetic basis of LS control in order to genetically improve LS resistance.
View Article and Find Full Text PDFMeta-analysis reveals consensus genomic regions associated with multiple disease resistance in wheat ( L.).
Mol Breed
March 2022
Department of Genetics and Plant Breeding, Ch. Charan Singh University, Meerut, 250004 India.
Unlabelled: In wheat, meta-QTLs (MQTLs) and candidate genes (CGs) were identified for multiple disease resistance (MDR). For this purpose, information was collected from 58 studies for mapping QTLs for resistance to one or more of the five diseases. As many as 493 QTLs were available from these studies, which were distributed in five diseases as follows: septoria tritici blotch (STB) 126 QTLs; septoria nodorum blotch (SNB), 103 QTLs; fusarium head blight (FHB), 184 QTLs; karnal bunt (KB), 66 QTLs; and loose smut (LS), 14 QTLs.
View Article and Find Full Text PDFSustainable Wheat Production and Food Security of Domestic Wheat in Tajikistan: Implications of Seed Health and Protein Quality.
Int J Environ Res Public Health
May 2021
Department of Plant Breeding, The Swedish University of Agricultural Sciences, Box 101, SE-230 53 Alnarp, Sweden.
Staple crop yield, quality and sustainable production are critical for domestic food security in developing countries. In Tajikistan, both seed-borne diseases and protein quality impair the yield and the quality of the major staple crop, wheat. Here, we used a detailed two-year survey of fields on 21 wheat-producing farms in Tajikistan, combined with lab analyses on seed health and protein quality, to investigate the presence of seed-borne diseases and bread-making quality in Tajik wheat.
View Article and Find Full Text PDFPopulation Genomics of the Maize Pathogen Ustilago maydis: Demographic History and Role of Virulence Clusters in Adaptation.
Genome Biol Evol
May 2021
Department of Organismic Interactions, Max-Planck-Institute for Terrestrial Microbiology, Marburg, Germany.
The tight interaction between pathogens and their hosts results in reciprocal selective forces that impact the genetic diversity of the interacting species. The footprints of this selection differ between pathosystems because of distinct life-history traits, demographic histories, or genome architectures. Here, we studied the genome-wide patterns of genetic diversity of 22 isolates of the causative agent of the corn smut disease, Ustilago maydis, originating from five locations in Mexico, the presumed center of origin of this species.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!