Mapping polygenes for tuber resistance to late blight in a diploid Solanum phureja × S. stenotomum hybrid population

2006 ◽  
Vol 125 (4) ◽  
pp. 385-389 ◽  
Author(s):  
I. Simko ◽  
S. Costanzo ◽  
V. Ramanjulu ◽  
B. J. Christ ◽  
K. G. Haynes
Keyword(s):  
Late Blight ◽  
Solanum Phureja ◽  
Hybrid Population ◽  
Tuber Resistance

Evaluation of the RPi-ber late blight resistance gene for tuber resistance in the field and laboratory

2011 ◽  
Vol 130 (4) ◽  
pp. 464-468 ◽  
Author(s):  
Hilary Mayton ◽  
Gilda Rauscher ◽  
Ivan Simko ◽  
William E. Fry
Keyword(s):  
Late Blight ◽  
Resistance Gene ◽  
Late Blight Resistance ◽  
Blight Resistance ◽  
Tuber Resistance

scholarly journals Potato Tuber Blight Resistance Phenotypes Correlate with RB Transgene Transcript Levels in an Age-Dependent Manner

2015 ◽  
Vol 105 (8) ◽  
pp. 1131-1136 ◽  
Author(s):  
Benjamin P. Millett ◽  
Liangliang Gao ◽  
Massimo Iorizzo ◽  
Domenico Carputo ◽  
James M. Bradeen
Keyword(s):  
Late Blight ◽  
Late Blight Resistance ◽  
Blight Resistance ◽  
Dependent Manner ◽  
Transcript Levels ◽  
Tuber Resistance ◽  
Age Dependent ◽  
Organ Specific ◽  
Late Blight Disease ◽  
Blight Disease

Plants have evolved strategies and mechanisms to detect and respond to pathogen attack. Different organs of the same plant may be subjected to different environments (e.g., aboveground versus belowground) and pathogens with different lifestyles. Accordingly, plants commonly need to tailor defense strategies in an organ-specific manner. Phytophthora infestans, causal agent of potato late blight disease, infects both aboveground foliage and belowground tubers. We examined the efficacy of transgene RB (known for conferring foliar late blight resistance) in defending against tuber late blight disease. Our results indicate that the presence of the transgene has a positive yet only marginally significant effect on tuber disease resistance on average. However, a significant association between transgene transcript levels and tuber resistance was established for specific transformed lines in an age-dependent manner, with higher transcript levels indicating enhanced tuber resistance. Thus, RB has potential to function in both foliage and tuber to impart late blight resistance. Our data suggest that organ-specific resistance might result directly from transcriptional regulation of the resistance gene itself.

scholarly journals POPULATION STRUCTURE OF PHYTOPHTHORA INFESTANS ON WORLDWIDE SCALE: A REVIEW

2017 ◽  
Vol 29 (2) ◽  
pp. 281
Author(s):  
Khalid Naveed ◽  
Nasir A. Rajputt ◽  
Sajid A. Khan ◽  
Arbab Ahmad
Keyword(s):  
Population Structure ◽  
Late Blight ◽  
Phytophthora Infestans ◽  
Potato Cultivar ◽  
R Genes ◽  
Solanum Bulbocastanum ◽  
Tuber Resistance ◽  
Commercial Potato ◽  
Rb Gene ◽  
Late Blight Of Potato

Phytophthora infestans is a destructive pathogen that causes late blight of potato worldwide. Several sexually and asexually reproducing lineages of the pathogen have been identified and new lineages are more virulent as compared to their parental lineages. A new highly aggressive clonal lineage EU13_A2 has spread into potato fields of Europe, Africa and Asia in place of the older lineages. In North America, 24 clonal lineages US1to US24 have been identified. Despite of sexual reproduction, the overall population of P. infestans in potato and tomato fields is dominated by asexual lineages. Breeding has been done to transfer 'R' genes into commercial potato cultivars through classical breeding and by pyramiding of genes. Defender is the only potato cultivar that has foliar and tuber resistance to late blight. Genetically modified potato with RB gene from Solanum bulbocastanum has been developed but it lacks tuber resistance to disease. This review discusses population structure of P. infestans worldwide and breeding efforts to produce late blight resistant potato.

Genetic loci associated with field resistance to late blight in offspring of Solanum phureja and S.tuberosum grown under short-day conditions

2001 ◽  
Vol 103 (2-3) ◽  
pp. 433-442 ◽  
Author(s):  
M. Ghislain ◽  
B. Trognitz ◽  
Ma. del R. Herrera ◽  
J. Solis ◽  
G. Casallo ◽  
...  
Keyword(s):  
Late Blight ◽  
Field Resistance ◽  
Solanum Phureja ◽  
Genetic Loci ◽  
Short Day
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