Review article: Complexity of late blight resistance in potato and its potential in cultivar improvement

Hajianfar, Ramin; Polgár, Zsolt; Wolf, I.; Takács, András; Cernák, István; Taller, János

doi:10.1556/aphyt.49.2014.2.2

Cited by 5 publications

(3 citation statements)

References 121 publications

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“…Rpi-Smira2 (R8) confers quantitative resistance under field conditions and associates with PiAvrSmira2 (PiAvr8) (Rietman et al, 2012;Hajianfar et al, 2014). In our study, Qingshu9 exhibited an HR response upon PiAvr8/PiAvrSmira2 infiltration, suggesting the presence of R8/Rpi-smira2 in Qingshu9.…”

Section: Discussionmentioning

confidence: 60%

Identification of Natural Resistance Mediated by Recognition of Phytophthora infestans Effector Gene Avr3aEM in Potato

Elnahal

Wang

et al. 2020

Front. Plant Sci.

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Late blight is considered the most renowned devastating potato disease worldwide. Resistance gene (R)-based resistance to late blight is the most effective method to inhibit infection by the causal agent Phytophthora infestans. However, the limited availability of resistant potato varieties and the rapid loss of R resistance, caused by P. infestans virulence variability, make disease control rely on fungicide application. We employed an Agrobacterium tumefaciens-mediated transient gene expression assay and effector biology approach to understand late blight resistance of Chinese varieties that showed years of promising field performance. We are particularly interested in PiAvr3a EM , the most common virulent allele of PiAvr3a KI that triggers a R3a-mediated hypersensitive response (HR) and late blight resistance. Through our significantly improved A. tumefaciensmediated transient gene expression assay in potato using cultured seedlings, we characterized two dominant potato varieties, Qingshu9 and Longshu7, in China by transient expression of P. infestans effector genes. Transient expression of 10 known avirulence genes showed that PiAvr4 and PiAvr8 (PiAvrsmira2) could induce HR in Qingshu9, and PiAvrvnt1.1 in Longshu7, respectively. Our study also indicated that PiAvr3a EM is recognized by these two potato varieties, and is likely involved in their significant field performance of late blight resistance. The identification of natural resistance mediated by PiAvr3a EM recognition in Qingshu9 and Longshu7 will facilitate breeding for improved potato resistance against P. infestans.

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Section: Discussionmentioning

confidence: 60%

Identification of Natural Resistance Mediated by Recognition of Phytophthora infestans Effector Gene Avr3aEM in Potato

Elnahal

Wang

et al. 2020

Front. Plant Sci.

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“…The occurrence of genetically highly variable pathogens with new virulences which overcome existing disease resistances as well as the more strongly restricted availability of ingredients for pesticides from year to year requires more effective strategies to protect potato plants against pathogens. One way includes the introgression of multiple resistance genes into cultivars (Hajianfar et al., ; Zhu, Li, Vossen, Visser, & Jacobsen, ).…”

Section: Discussionmentioning

confidence: 99%

Mapping of a novel, major late blight resistance locus in the diploid (1EBN) Mexican Solanum pinnatisectum Dunal on chromosome VII

2018

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Late blight caused by the oomycete Phytophthora infestans (Mont.) de Bary (Pi) is the most important foliar disease of potato worldwide. An intraspecific hybrid between individuals of a resistant and a susceptible S. pinnatisectum accession was backcrossed to the susceptible parent to generate a segregating population for late blight resistance consisting of 84 plants. In detached-leaflet assays, reaction to late blight segregated in a 1r:1s manner in BC 1 progeny indicating the presence of a single dominant resistance gene. A genetic map was constructed based on 1,583DArT/SSR markers which were allocated to 12 linkage groups, covering 1,793.5 cM with an average marker distance of 1.1 cM. The late blight resistance locus derived from S. pinnatisectum was mapped on chromosome VII. In comparison with the previously reported resistance genes Rpi1 and Rpi2, the new target resistance locus most likely is located on the opposite arm of chromosome VII. Results of this study will serve as a basis for future fine mapping of the late blight resistance locus and the development of locus-specific markers for marker-assisted selection.

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“…Since the early part of the last century breeding activities have mainly focused on the high level of resistance conferred by dominant major R genes from the Mexican hexaploid wild Solanum species, Solanum demissum. Presently, many cultivars with S. demissum in their pedigree are available (Hajianfar et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Response of Some Potato Clones With Potential Resistance to Late Blight Disease (Phytophthora Infestans) Under Field Conditions

Hermeziu¹

2021

An. U Craiova, Biol. Hortic. Food. Env.

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In the present study thirteen potato clones were evaluated for resistance against late blight caused by Phytophthora infestans. Field experiment was conducted to NIRDPS Brasov, Romania, under natural epiphytotic conditions. The first symptoms of potato late blight disease were observed at 58 days after planting on Sasa x Pamela and R7Sasa x Orchestra clones. Out of 13 genotype, the incidence showed 2 genotpyes (Sasa R3 x Oceania and Sasa R7 x Orchestra) as highly susceptible, 2 varieties as moderately susceptible (Agria x Rustic (Cl1) and Agria x Rustic (Cl2)), 1 genotype as susceptible (Sasa x Pamela), 5 genotpyes relatively resistant (Sasa R3 x Rustic (Cl2), Sasa (R3) x Rustic (Cl3), Sasa (R3) x Orchestra, Sasa (R8) x Orchestra) Sasa (R6) x Orchestra) and 3 genotpys resistant (Sasa (R3) x Rustic (Cl1), Sasa x Fribel, Sasa x Florice). The Area under the disease progress curve (AUDPC) value was less for R3Sasa x Rustic, Sasa x Fribel and Sasa x Florice compared to other clones, indicating their higher level of resistance.

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Review article: Complexity of late blight resistance in potato and its potential in cultivar improvement

Cited by 5 publications

References 121 publications

Identification of Natural Resistance Mediated by Recognition of Phytophthora infestans Effector Gene Avr3aEM in Potato

Identification of Natural Resistance Mediated by Recognition of Phytophthora infestans Effector Gene Avr3aEM in Potato

Mapping of a novel, major late blight resistance locus in the diploid (1EBN) Mexican Solanum pinnatisectum Dunal on chromosome VII

Response of Some Potato Clones With Potential Resistance to Late Blight Disease (Phytophthora Infestans) Under Field Conditions

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