scholarly journals QTLs for Tomato Powdery Mildew Resistance (Oidium lycopersici) in Lycopersicon parviflorum G1.1601 Co-localize with Two Qualitative Powdery Mildew Resistance Genes

2003 ◽  
Vol 16 (2) ◽  
pp. 169-176 ◽  
Author(s):  
Yuling Bai ◽  
Cai-Cheng Huang ◽  
Ron van der Hulst ◽  
Fien Meijer-Dekens ◽  
Guusje Bonnema ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Lycopersicon Esculentum ◽  
Powdery Mildew Resistance ◽  
Hypersensitive Resistance ◽  
Resistance Response ◽  
Mildew Resistance ◽  
Sequence Characterized Amplified Region ◽  
Tomato Powdery Mildew ◽  
Oidium Lycopersici ◽  
Genomic Regions

Tomato (Lycopersicon esculentum) is susceptible to the powdery mildew Oidium lycopersici, but several wild relatives such as Lycopersicon parviflorum G1.1601 are completely resistant. An F2 population from a cross of Lycopersicon esculentum cv. Moneymaker × Lycopersicon parviflorum G1.1601 was used to map the O. lycopersici resistance by using amplified fragment length polymorphism markers. The resistance was controlled by three quantitative trait loci (QTLs). Ol-qtl1 is on chromosome 6 in the same region as the Ol-1 locus, which is involved in a hypersensitive resistance response to O. lycopersici. Ol-qtl2 and Ol-qtl3 are located on chromosome 12, separated by 25 cM, in the vicinity of the Lv locus conferring resistance to another powdery mildew species, Leveillula taurica. The three QTLs, jointly explaining 68% of the phenotypic variation, were confirmed by testing F3 progenies. A set of polymerase chain reaction-based cleaved amplified polymorphic sequence and sequence characterized amplified region markers was generated for efficient monitoring of the target QTL genomic regions in marker assisted selection. The possible relationship between genes underlying major and partial resistance for tomato powdery mildew is discussed.

scholarly journals HvGCN2 silencing in barley displays enhanced Blumeria graminis f. sp. hordei susceptibility

2018 ◽  
Vol 70 (3) ◽  
pp. 513-520
Author(s):  
Ibrahim Ozturk ◽  
Figen Ersoy ◽  
Mahinur Akkaya
Keyword(s):  
Powdery Mildew ◽  
Powdery Mildew Resistance ◽  
Blumeria Graminis ◽  
Virus Induced Gene Silencing ◽  
Incompatible Interaction ◽  
Resistance Response ◽  
Mildew Resistance ◽  
Barley Powdery Mildew ◽  
Powdery Mildew Disease ◽  
Crop Disease

Powdery mildew disease, caused by Blumeria graminis f. sp. hordei (Bgh), which belongs to the order Erysiphales, is a major crop disease. The general control nondepressible-2 (GCN2) gene of barley was previously found to be overexpressed during the powdery mildew resistance response. Recently, Arabidopsis thaliana GCN2 (AtGCN2) was shown to be involved in disease resistance against biotrophic and necrotrophic pathogens. In order to understand the function of Hordeum vulgare GCN2 (HvGCN2) in the barley powdery mildew resistance response, this gene was silenced by barley stripe mosaic virus (BSMV), mediated by virus-induced gene silencing (VIGS). This is the first study showing the potential importance of HvGCN2 in powdery mildew disease of barley. Based on our observations, when HvGCN2 was silenced on average by 53.5%, Bgh development was increased by 18.7 to 32.1%, which was determined by primary, secondary and longest hyphae measurements. The number of germinated spores also increased 2.8-fold in HvGCN2 silenced plants compared to control plants (BSMV:00). On the other hand, under the resistant condition, no difference was observed in HvGCN2- silenced plants compared to non-silenced lines although the gene was found to be overexpressed in incompatible interaction.

scholarly journals Detection of Powdery Mildew Resistance Gene in Melon Cultivar Meloni Based on SCAR Markers

2020 ◽  
Vol 12 (1) ◽  
pp. 76-82
Author(s):  
Muhammad Alif Ishak ◽  
Budi Setiadi Daryono
Keyword(s):  
Powdery Mildew ◽  
Resistance Gene ◽  
Powdery Mildew Resistance ◽  
Fungal Infections ◽  
Plant Diseases ◽  
Scar Markers ◽  
Powdery Mildew Resistance Gene ◽  
Mildew Resistance ◽  
Sequence Characterized Amplified Region ◽  
Melon Seeds

Powdery mildew is one of the diseases caused by fungal infections that can reduce the production of melon fruit worldwide including in Indonesia. A powdery mildew-resistant cultivar of melon is needed to increase melon yield crops. This study aimed to detect resistance gene linked to powdery mildew using a sequence characterized amplified region (SCAR) markers. The melon cultivar Meloni was used in this study. SL-3, PI 371795, and Aramis cultivar were used to compare. Amplification of the marker was performed employing a pair of primers. The result showed that Meloni had a powdery mildew resistance gene by the presence of a DNA target band at 1058 base pair (bp). Based on this result, it could be concluded that Meloni was an excellent melon cultivar because of its ability to overcome the powdery mildew infections naturally. SCAR markers have been used for various purposes, especially to detect resistance genes to plant diseases. The present study had provided information for plant breeders about Meloni as the new melon cultivar that was genetically resistant against powdery mildew infections. Furthermore, Meloni could be proposed as an alternative to native Indonesian superior melon seeds.

Identification and SSR Mapping of Two Powdery Mildew Resistance Genes in Wild Emmer (Triticum dicoccoides) Accessions IW3 and IW10

2009 ◽  
Vol 35 (5) ◽  
pp. 761-767 ◽  
Author(s):  
Gen-Qiao LI ◽  
Ti-Lin FANG ◽  
Hong-Tao ZHANG ◽  
Chao-Jie XIE ◽  
Zuo-Min YANG ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Resistance Genes ◽  
Powdery Mildew Resistance ◽  
Triticum Dicoccoides ◽  
Wild Emmer ◽  
Mildew Resistance

Identification of Powdery Mildew Resistance Gene in Pea Line X9002

2015 ◽  
Vol 41 (4) ◽  
pp. 515 ◽  
Author(s):  
Zhong-Yi WANG ◽  
Hai-Ning FU ◽  
Su-Li SUN ◽  
Can-Xin DUAN ◽  
Xiao-Fei WU ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Resistance Gene ◽  
Powdery Mildew Resistance ◽  
Powdery Mildew Resistance Gene ◽  
Mildew Resistance
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