Inheritance of extreme resistance to potato virus Y in potato

1995 ◽  
Vol 38 (2) ◽  
pp. 199-210 ◽  
Author(s):  
Bogdan Flis
Keyword(s):  
Potato Virus ◽  
Potato Virus Y ◽  
Extreme Resistance

Novel somatic hybrids (Solanum tuberosum L. + Solanum tarnii) and their fertile BC1 progenies express extreme resistance to potato virus Y and late blight

2008 ◽  
Vol 116 (5) ◽  
pp. 691-700 ◽  
Author(s):  
Ramona Thieme ◽  
Elena Rakosy-Tican ◽  
Tatjana Gavrilenko ◽  
Olga Antonova ◽  
Jörg Schubert ◽  
...  
Keyword(s):  
Solanum Tuberosum ◽  
Late Blight ◽  
Potato Virus ◽  
Potato Virus Y ◽  
Somatic Hybrids ◽  
Solanum Tuberosum L ◽  
Extreme Resistance

Mapping and marker-assisted selection for a gene for extreme resistance to potato virus Y

1997 ◽  
Vol 94 (2) ◽  
pp. 192-197 ◽  
Author(s):  
J. H. Hämäläinen ◽  
K. N. Watanabe ◽  
J. P. T. Valkonen ◽  
A. Arihara ◽  
R. L. Plaisted ◽  
...  
Keyword(s):  
Potato Virus ◽  
Marker Assisted Selection ◽  
Potato Virus Y ◽  
Extreme Resistance ◽  
Selection For

scholarly journals Strain-Specific Hypersensitive and Extreme Resistance Phenotypes Elicited by Potato virus Y Among 39 Potato Cultivars Released in Three World Regions Over a 117-Year Period

Plant Disease ◽  
2018 ◽  
Vol 102 (1) ◽  
pp. 185-196 ◽  
Author(s):  
Roger A. C. Jones ◽  
Stuart J. Vincent
Keyword(s):  
Potato Virus ◽  
Potato Virus Y ◽  
Secondary Infection ◽  
Potato Cultivars ◽  
Symptom Expression ◽  
Extreme Resistance ◽  
Potato Plants ◽  
Pvy Resistance ◽  
World Regions ◽  
Healthy Seed

Strain-specific hypersensitive (HR) and extreme resistance (ER) phenotypes elicited in potato plants by three Potato virus Y (PVY) isolates in strain groups PVYO (BL and DEL3) and PVYD (KIP1) were studied. PVYO and PVYD isolates elicit HR genes Ny or putative Nd, respectively, and all three isolates elicit ER gene Ry. They were inoculated to 39 Australasian, European, or North American potato cultivars released over a 117-year period and harvested tubers were replanted. Both primary and secondary symptoms were recorded. Two European cultivars always developed ER following sap and graft inoculation and, thus, carried comprehensive PVY resistance gene Ry. One Australasian and two European cultivars always developed susceptible phenotypes and, thus, lacked genes Ry, Ny, and putative Nd. Sap inoculation with isolate KIP1 elicited localized HR (LHR) in 31 cultivars and both LHR and systemic HR (SHR) in three others; thus, all carried putative Nd. Isolates BL and DEL3 both elicited susceptible phenotypes in 11 of these 34 cultivars but LHR alone, SHR alone, or both LHR and SHR in the other 23 which, therefore, all carry Ny. With these two isolates, SHR expression ranged from very severe to very weak, with the greatest numbers of isolate–cultivar combinations occurring in the severe category with BL (n = 11) and moderate category (n = 12) with DEL3. Within the same isolate–cultivar combination, overall, SHR symptom expression was weaker with secondary than primary infection. With both primary and secondary infection, SHR expression was most severe with KIP1 and weakest with DEL3. Genes Ny and putative Nd were present in cultivars released between 1939 and 2010 or 1893 and 2010, respectively, occurring in cultivars from all three world regions. These findings have important implications concerning breeding new PVY-resistant potato cultivars, especially for countries lacking healthy seed potato stocks, or where subsistence farmers cannot afford them. An alternative to including gene Ry is incorporating as many strain-specific PVY resistance genes as possible.

scholarly journals Extreme resistance to Potato Virus Y in potato carrying the Rysto gene is mediated by a TIR-NLR immune receptor

2018 ◽  
Author(s):  
Marta Grech-Baran ◽  
Kamil Witek ◽  
Katarzyna Szajko ◽  
Agnieszka I Witek ◽  
Karolina Morgiewicz ◽  
...  
Keyword(s):  
Single Molecule ◽  
Potato Virus ◽  
Potato Virus Y ◽  
Resistance Breeding ◽  
Transgenic Potato ◽  
Extreme Resistance ◽  
Breeding Programs ◽  
Potato Plants ◽  
Gene Enrichment ◽  
Transgenic Potato Plants

ABSTRACTPotato virus Y (PVY) is a major potato pathogen that causes annual losses of billions of dollars. Control of its transmission requires extensive use of environmentally damaging insecticides. Rysto confers extreme resistance (ER) to PVY and is a valuable trait in resistance breeding programs. We isolated Rysto using Resistance gene enrichment sequencing (RenSeq) and PacBio SMRT (Pacific Biosciences Single-Molecule Real Time Sequencing). Rysto encodes a nucleotide binding-leucine rich repeat (NLR) protein with an N-terminal TIR domain, and is sufficient for PVY perception and extreme resistance in transgenic potato plants. We investigated the requirements for Rysto-dependent extreme resistance, and showed that Rysto function is temperature-independent and requires EDS1 and NRG1 proteins. Rysto may prove valuable for creating PVY-resistant cultivars of potato and other Solanaceae crops.

scholarly journals Resistance levels to two strains of Potato virus Y (PVY) in transgenic potatoes cv. Achat

2001 ◽  
Vol 19 (3) ◽  
pp. 348-350 ◽  
Author(s):  
André N. Dusi ◽  
César Carvalho ◽  
Antônio Carlos Torres ◽  
Antonio Carlos de Ávila
Keyword(s):  
Transgenic Plants ◽  
Optical Density ◽  
Potato Virus ◽  
Partial Resistance ◽  
Potato Virus Y ◽  
Systemic Infection ◽  
Transgenic Potato ◽  
Extreme Resistance ◽  
Density Values ◽  
Transgenic Potatoes

Two transgenic potato clones of cv. Achat, denominated 1P and 63P were challenged with two Potato virus Y strains (PVY O and PVY N), under greenhouse conditions, to be evaluated for resistance to these strains. Optical density values of the Elisa readings of samples from the transgenic plants were compared to readings from samples of the inoculated non-transformed plants. Clone 1P was extremely resistant to both PVY strains, reflected by not being systemically infected. Clone 63P, however, presented partial resistance to both PVY strains as local or systemic infection was delayed in some days. These results confirm the previously reported extreme resistance to PVY of clone 1P.

Gene-centromere mapping in potato by half-tetrad analysis: map distances of H1, Rx, and Ry and their possible use for ascertaining the mode of 2n-pollen formation

Genome ◽  
1992 ◽  
Vol 35 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Marinus Wagenvoort ◽  
Ewa Zimnoch-Guzowska
Keyword(s):  
Potato Virus ◽  
Potato Virus Y ◽  
Potato Virus X ◽  
2N Pollen ◽  
Tetrad Analysis ◽  
Extreme Resistance ◽  
Second Division Restitution ◽  
Pollen Formation ◽  
Tetraploid Progeny ◽  
Map Distance

Diploids from the tetraploid potato varieties 'Alcmaria' and 'Pansta' and from the tetraploid CPRO genotypes Y66-13-610 and Y66-13-636 were used in half-tetrad analyses to estimate the gene-centromere map distances of the genes Rx, Ry, and H1. Employing tetraploid progeny from 2x (second division restitution) – 4x testcrosses the gene-centromere map distance of H1, conferring resistance to pathotype Ro1 of Globodera rostochiensis, was estimated to be 16.3 centimorgans (cM). For Rχ, conferring extreme resistance to potato virus X (PVX), a map distance of 33.9 cM was estimated. The gene Ry, conferring extreme resistance to potato virus Y (PVY), was estimated to be located 14.2 cM from the centromere. Using the estimated map distance for Rx, it was attempted to determine the mode of 2n-pollen formation in four diploid interspecific hybrids, including the species Solanum tuberosum, Solanum chacoense, Solanum yungasense, and Solanum phureja, by half-tetrad analysis in tetraploid progeny from 4x-2x testcrosses. The mean frequency of 8.7% nulliplex plants for Rx was outside the range of the 95% confidence intervals, for both first division restitution and second division restitution 2n pollen.Key words: nematode resistance, potato virus X resistance, potato virus Y resistance, 2n eggs, gene-centromere mapping, Solanum.

Sign in / Sign up

Export Citation Format

Share Document