Allocation of a powdery mildew resistance locus to the chromosome arm 6RL of Secale cereale L. cv. ‘Jingzhouheimai’

Euphytica ◽  
2010 ◽  
Vol 176 (2) ◽  
pp. 157-166 ◽  
Author(s):  
Dan Wang ◽  
Lifang Zhuang ◽  
Ling Sun ◽  
Yigao Feng ◽  
Ziyou Pei ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Secale Cereale ◽  
Powdery Mildew Resistance ◽  
Resistance Locus ◽  
Mildew Resistance ◽  
Chromosome Arm ◽  
Secale Cereale L

scholarly journals Using the 6RLKu Minichromosome of Rye (Secale cereale L.) to Create Wheat-Rye 6D/6RLKu Small Segment Translocation Lines with Powdery Mildew Resistance

2018 ◽  
Vol 19 (12) ◽  
pp. 3933 ◽  
Author(s):  
Haimei Du ◽  
Zongxiang Tang ◽  
Qiong Duan ◽  
Shuyao Tang ◽  
Shulan Fu
Keyword(s):  
Powdery Mildew ◽  
Resistance Gene ◽  
Secale Cereale ◽  
Powdery Mildew Resistance ◽  
Translocation Chromosome ◽  
Translocation Line ◽  
Powdery Mildew Resistance Gene ◽  
Mildew Resistance ◽  
Small Segment ◽  
Secale Cereale L

Long arms of rye (Secale cereale L.) chromosome 6 (6RL) carry powdery mildew resistance genes. However, these sources of resistance have not yet been successfully used in commercial wheat cultivars. The development of small segment translocation chromosomes carrying resistance may result in lines carrying the 6R chromosome becoming more commercially acceptable. However, no wheat-rye 6RL small segment translocation line with powdery mildew resistance has been reported. In this study, a wheat-rye 6RLKu minichromosome addition line with powdery mildew resistance was identified, and this minichromosome was derived from the segment between L2.5 and L2.8 of the 6RLKu chromosome arm. Following irradiation, the 6RLKu minichromosome divided into two smaller segments, named 6RLKumi200 and 6RLKumi119, and these fragments participated in the formation of wheat-rye small segment translocation chromosomes 6DS/6RLKumi200 and 6DL/6RLKumi119, respectively. The powdery mildew resistance gene was found to be located on the 6RLKumi119 segment. Sixteen 6RLKumi119-specific markers were developed, and their products were cloned and sequenced. Nucleotide BLAST searches indicated that 14 of the 16 sequences had 91–100% similarity with nine scaffolds derived from 6R chromosome of S. cereale L. Lo7. The small segment translocation chromosome 6DL/6RLKumi119 makes the practical utilization in agriculture of powdery mildew resistance gene on 6RLKu more likely. The nine scaffolds are useful for further studying the structure and function of this small segment.

scholarly journals Discovery of a novel powdery mildew (Blumeria graminis) resistance locus in rye (Secale cereale L.)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
N. M. Vendelbo ◽  
K. Mahmood ◽  
P. Sarup ◽  
P. S. Kristensen ◽  
J. Orabi ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Secale Cereale ◽  
Powdery Mildew Resistance ◽  
Genome Wide Association Study ◽  
Infection Type ◽  
Snp Array ◽  
Snp Markers ◽  
Resistance Locus ◽  
Mildew Resistance ◽  
A Genome

AbstractPowdery mildew is one of the most destructive diseases in the world, causing substantial grain yield losses and quality reduction in cereal crops. At present 23 powdery mildew resistance genes have been identified in rye, of which the majority are in wheat-rye translocation lines developed for wheat improvement. Here, we investigated the genetics underlying powdery mildew resistance in the Gülzow-type elite hybrid rye (Secale cereale L.) breeding germplasm. In total, 180 inbred breeding lines were genotyped using the state-of-the-art 600 K SNP array and phenotyped for infection type against three distinct field populations of B. graminis f. sp. secalis from Northern Germany (2013 and 2018) and Denmark (2020). We observed a moderate level of powdery mildew resistance in the non-restorer germplasm population, and by performing a genome-wide association study using 261,406 informative SNP markers, we identified a powdery mildew resistance locus, provisionally denoted PmNOS1, on the distal tip of chromosome arm 7RL. Using recent advances in rye genomic resources, we investigated whether nucleotide-binding leucine-rich repeat genes residing in the identified 17 Mbp block associated with PmNOS1 on recent reference genomes resembled known Pm genes.

Identification and mapping of PmSE5785, a new recessive powdery mildew resistance locus, in synthetic hexaploid wheat

Euphytica ◽  
2015 ◽  
Vol 207 (3) ◽  
pp. 619-626 ◽  
Author(s):  
Yajuan Wang ◽  
Changyou Wang ◽  
Wei Quan ◽  
Xiujuan Jia ◽  
Ying Fu ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Hexaploid Wheat ◽  
Powdery Mildew Resistance ◽  
Synthetic Hexaploid Wheat ◽  
Resistance Locus ◽  
Mildew Resistance ◽  
Synthetic Hexaploid

scholarly journals RMo1 Confers Blast Resistance in Barley and Is Located within the Complex of Resistance Genes Containing Mla, a Powdery Mildew Resistance Gene

2006 ◽  
Vol 19 (9) ◽  
pp. 1034-1041 ◽  
Author(s):  
Tsuyoshi Inukai ◽  
M. Isabel Vales ◽  
Kiyosumi Hori ◽  
Kazuhiro Sato ◽  
Patrick M. Hayes
Keyword(s):  
Powdery Mildew ◽  
Linkage Map ◽  
Resistance Gene ◽  
Resistance Genes ◽  
Rice Blast ◽  
Powdery Mildew Resistance ◽  
Blast Disease ◽  
Grass Species ◽  
Resistance Locus ◽  
Mildew Resistance

Isolates of Magnaporthe oryzae (the causal agent of rice blast disease) can infect a range of grass species, including barley. We report that barley Hordeum vulgare cv. Baronesse and an experimental line, BCD47, show a range of resistance reactions to infection with two rice blast isolates. The complete resistance of Baronesse to the isolate Ken 54–20 is controlled by a single dominant gene, designated RMo1. RMo1 mapped to the same linkage map position on chromosome 1H as the powdery mildew resistance locus Mla and an expressed sequence tag (k04320) that corresponds to the barley gene 711N16.16. A resistance quantitative trait locus (QTL), at which Baronesse contributed the resistance allele, to the isolate Ken 53–33 also mapped at the same position as RMo1. Synteny analysis revealed that a corresponding region on rice chromosome 5 includes the bacterial blight resistance gene xa5. These results indicate that a defined region on the short arm of barley chromosome 1H, including RMo1 and Mla, harbors genes conferring qualitative and quantitative resistance to multiple pathogens. The partial resistance of BCD47 to Ken53–33 is determined by alleles at three QTL, two of which coincide with the linkage map positions of the mildew resistance genes mlo and Mlf.

scholarly journals Cultivar-Based Introgression Mapping Reveals Wild Species-Derived Pm-0, the Major Powdery Mildew Resistance Locus in Squash

PLoS ONE ◽  
2016 ◽  
Vol 11 (12) ◽  
pp. e0167715 ◽  
Author(s):  
William L. Holdsworth ◽  
Kyle E. LaPlant ◽  
Duane C. Bell ◽  
Molly M. Jahn ◽  
Michael Mazourek
Keyword(s):  
Powdery Mildew ◽  
Wild Species ◽  
Powdery Mildew Resistance ◽  
Resistance Locus ◽  
Mildew Resistance
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