Construction of cytogenetic map of the short arm of rye chromosome 1 (1RS)

Rye is commonly used in wheat breeding and improvement as a source of resistance to abiotic stress, diseases and insects. In most cases short arm of rye chromosome 1 (1RS) is transferred into wheat genome. Introgression of 1RS into wheat genome has also some negative effects. 1RS was found in more than 300 wheat cultivars. Genes underlying these agronomicaly important traits have not identified, yet. Analysis of rye genome is complicated by its large size (1C ~ 8 000 Mbp). In contrast short arm of rye chromosome 1 (~ 400 Mbp) represents only 5% of rye genome. Aim of this project is construction of cytogenetic map of 1RS and development of Chromosome Sequence Tag (CSTs) markers. Availability of cytogenetic map can accelerate construction of physical map and isolation of agronomicaly important genes. CSTs provide for study of cereals genomes evolution, detection and identification of deletion of 1RS and screening for short 1RS fragments in wheat genome. "www.ueb.cas.cz":[ http://www.ueb.cas.cz/Olomouc1/LMCC/projects.html]

---

Related articles

Antibiotic resistance countered - US scientists believe they may have found a way to stop the growing problem of bacteria becoming resistant to current drug treatments (11.7.2007)

Construction of BAC library and physical mapping of the wheat chromosome 3D - The large size and polyploid nature of the nuclear genome of bread wheat pose a great challenge for the understanding of complete genome information, genome sequencing and gene discovery (26.4.2007)

Ancient genes used to produce salt-tolerant wheat - In a recent set of papers published in the journal Plant Physiology researchers describe the two genes – known as Nax1 and Nax2 (4.2.2007)

Wheat's lost gene helps nutrition - The gene occurs naturally in wheat, but has largely been silenced during the evolution of domestic varieties (30.11.2006)

Molecular characterization of Ph1 as a major chromosome pairing locus in polyploid wheat - The foundation of western civilization owes much to the high fertility of bread wheat, which results from the stability of its polyploid genome (2.3.2006)