scholarly journals Diversity of Resistance Gene Analogues in Rust Resistance and Susceptible Bread Wheat Varieties

2019 ◽  
Vol 5 (2) ◽  
pp. 29-40
Author(s):  
Faranak Khanmakoo ◽  
Seyed Abolghasem Mohammadi ◽  
Robab Salami ◽  
Saeed Aharizad ◽  
◽  
...  
Keyword(s):  
Resistance Gene ◽  
Bread Wheat ◽  
Rust Resistance ◽  
Wheat Varieties

scholarly journals Map-Based Cloning of Leaf Rust Resistance Gene Lr21 From the Large and Polyploid Genome of Bread Wheat

Genetics ◽  
2003 ◽  
Vol 164 (2) ◽  
pp. 655-664 ◽  
Author(s):  
Li Huang ◽  
Steven A Brooks ◽  
Wanlong Li ◽  
John P Fellers ◽  
Harold N Trick ◽  
...  
Keyword(s):  
Amino Acid ◽  
Leaf Rust ◽  
Resistance Gene ◽  
Bread Wheat ◽  
Rust Resistance ◽  
Agronomic Traits ◽  
Leaf Rust Resistance ◽  
Triticum Aestivum L ◽  
Rust Resistance Gene ◽  
Leaf Rust Resistance Gene

Abstract We report the map-based cloning of the leaf rust resistance gene Lr21, previously mapped to a generich region at the distal end of chromosome arm 1DS of bread wheat (Triticum aestivum L.). Molecular cloning of Lr21 was facilitated by diploid/polyploid shuttle mapping strategy. Cloning of Lr21 was confirmed by genetic transformation and by a stably inherited resistance phenotype in transgenic plants. Lr21 spans 4318 bp and encodes a 1080-amino-acid protein containing a conserved nucleotide-binding site (NBS) domain, 13 imperfect leucine-rich repeats (LRRs), and a unique 151-amino-acid sequence missing from known NBS-LRR proteins at the N terminus. Fine-structure genetic analysis at the Lr21 locus detected a noncrossover (recombination without exchange of flanking markers) within a 1415-bp region resulting from either a gene conversion tract of at least 191 bp or a double crossover. The successful map-based cloning approach as demonstrated here now opens the door for cloning of many crop-specific agronomic traits located in the gene-rich regions of bread wheat.

Introgression of a leaf rust resistance gene from Aegilops caudata to bread wheat

2012 ◽  
Vol 91 (2) ◽  
pp. 155-161 ◽  
Author(s):  
AMANDEEP KAUR RIAR ◽  
SATINDER KAUR ◽  
H. S. DHALIWAL ◽  
KULDEEP SINGH ◽  
PARVEEN CHHUNEJA
Keyword(s):  
Leaf Rust ◽  
Resistance Gene ◽  
Bread Wheat ◽  
Rust Resistance ◽  
Leaf Rust Resistance ◽  
Rust Resistance Gene ◽  
Leaf Rust Resistance Gene ◽  
Aegilops Caudata
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