Identification and fine mapping of Pi33, the rice resistance gene corresponding to the Magnaporthe grisea avirulence gene ACE1

2003 ◽  
Vol 107 (6) ◽  
pp. 1139-1147 ◽  
Author(s):  
R. Berruyer ◽  
H. Adreit ◽  
J. Milazzo ◽  
S. Gaillard ◽  
A. Berger ◽  
...  
Keyword(s):  
Resistance Gene ◽  
Fine Mapping ◽  
Magnaporthe Grisea ◽  
Avirulence Gene

scholarly journals Identification of an Avirulence Gene in the Fungus Magnaporthe grisea Corresponding to a Resistance Gene at the Pik Locus

2005 ◽  
Vol 95 (7) ◽  
pp. 768-772 ◽  
Author(s):  
N. Yasuda ◽  
M. T. Noguchi ◽  
Y. Fujita
Keyword(s):  
Resistance Gene ◽  
Genetic Basis ◽  
Magnaporthe Grisea ◽  
Fragment Length Polymorphism ◽  
Random Amplified Polymorphic Dna ◽  
Genetic Maps ◽  
Avirulence Gene ◽  
Chinese Isolate ◽  
Rice Cultivars ◽  
Almost All

A rice isolate of Magnaporthe grisea collected from China was avirulent on rice cvs. Hattan 3 and 13 other Japanese rice cultivars. The rice cv. Hattan 3 is susceptible to almost all Japanese blast fungus isolates from rice. The genetic basis of avirulence in the Chinese isolate on Japanese rice cultivars was studied using a cross between the Chinese isolate and a laboratory isolate. The segregation of avirulence or virulence was studied in 185 progeny from the cross, and monogenic control was demonstrated for avirulence to the 14 rice cultivars. The resistance gene that corresponds to the avirulence gene (Avr-Hattan 3) is thought to be located at the Pik locus. Resistance and susceptibility in response to the Chinese isolate in F3 lines of a cross of resistant and susceptible rice cultivars were very similar to the Pik tester isolate, Ken54-20. Random amplified polymorphic DNA markers and restriction fragment length polymorphism markers from genetic maps of the fungus were used to construct a partial genetic map of Avr-Hattan 3. We obtained several flanking markers and one co-segregated marker of Avr-Hattan 3 in the 144 mapping population.

scholarly journals Rmg7, a New Gene for Resistance to Triticum Isolates of Pyricularia oryzae Identified in Tetraploid Wheat

2015 ◽  
Vol 105 (4) ◽  
pp. 495-499 ◽  
Author(s):  
Analiza Grubanzo Tagle ◽  
Izumi Chuma ◽  
Yukio Tosa
Keyword(s):  
Resistance Gene ◽  
Magnaporthe Grisea ◽  
Single Gene ◽  
Tetraploid Wheat ◽  
Wheat Breeding ◽  
Pyricularia Oryzae ◽  
Avirulence Gene ◽  
Similar Disease ◽  
New Gene ◽  
Higher Temperature

A single gene for resistance, designated Rmg7 (Resistance to Magnaporthe grisea 7), was identified in a tetraploid wheat accession, St24 (Triticum dicoccum, KU120), against Br48, a Triticum isolate of Pyricularia oryzae. Two other wheat accessions, St17 (T. dicoccum, KU112) and St25 (T. dicoccum, KU122), were also resistant against Br48 and showed a similar disease reaction pattern to St24. Crosses between these resistant accessions yielded no susceptible F2 seedlings, suggesting that St24, St17, and St25 carry the same resistance gene. Furthermore, a single avirulence gene corresponding to Rmg7 was detected in a segregation analysis of random F1 progenies between Br48 and MZ5-1-6, an Eleusine isolate virulent to St24 at a higher temperature. This avirulence gene was recognized not only by St24, but also by St17 and St25, thus supporting the preceding results indicating that all three accessions carry Rmg7. This resistance gene may have potential in future wheat breeding programs.

scholarly journals Gain of Virulence Caused by Insertion of a Pot3 Transposon in a Magnaporthe grisea Avirulence Gene

2001 ◽  
Vol 14 (5) ◽  
pp. 671-674 ◽  
Author(s):  
Seogchan Kang ◽  
Marc Henri Lebrun ◽  
Leonard Farrall ◽  
Barbara Valent
Keyword(s):  
Disease Resistance ◽  
Resistance Gene ◽  
Magnaporthe Grisea ◽  
Rice Cultivar ◽  
Avirulence Gene ◽  
Disease Resistance Gene ◽  
Rice Cultivars

The avirulence gene AVR-Pita in Magnaporthe grisea prevents the fungus from infecting rice cultivars carrying the disease resistance gene Pi-ta. Insertion of Pot3 transposon into the promoter of AVR-Pita caused the gain of virulence toward Yashiro-mochi, a rice cultivar containing Pi-ta, which demonstrated the ability of Pot3 to move within the M. grisea genome. The appearance of Pot3 in M. grisea seems to predate the diversification of various host-specific forms of the fungus.

Identification and fine mapping of AvrPi15, a novel avirulence gene of Magnaporthe grisea

2006 ◽  
Vol 113 (5) ◽  
pp. 875-883 ◽  
Author(s):  
Jun-Hong Ma ◽  
Ling Wang ◽  
Shu-Jie Feng ◽  
Fei Lin ◽  
Yi Xiao ◽  
...  
Keyword(s):  
Fine Mapping ◽  
Magnaporthe Grisea ◽  
Avirulence Gene

Resistance spectrum assay and fine mapping of the blast resistance gene from a rice experimental line, IRBLta2-Re

Euphytica ◽  
2013 ◽  
Vol 195 (2) ◽  
pp. 209-216 ◽  
Author(s):  
Shen Chen ◽  
Jing Su ◽  
Jingluan Han ◽  
Wenjuan Wang ◽  
Congying Wang ◽  
...  
Keyword(s):  
Resistance Gene ◽  
Fine Mapping ◽  
Blast Resistance ◽  
Blast Resistance Gene ◽  
Experimental Line ◽  
Resistance Spectrum

scholarly journals Natural Variation at the Pi-ta Rice Blast Resistance Locus

2003 ◽  
Vol 93 (11) ◽  
pp. 1452-1459 ◽  
Author(s):  
Yulin Jia ◽  
Gregory T. Bryan ◽  
Leonard Farrall ◽  
Barbara Valent
Keyword(s):  
Positional Cloning ◽  
Magnaporthe Grisea ◽  
Blast Resistance ◽  
El Paso ◽  
Avirulence Gene ◽  
Resistance Locus ◽  
Japonica Rice ◽  
Breeding Programs ◽  
Rice Blast Resistance ◽  
Intron Region

The resistance gene Pi-ta protects rice crops against the fungal pathogen Magnaporthe grisea expressing the avirulence gene AVR-Pita in a gene-for-gene manner. Pi-ta, originally introgressed into japonica rice from indica origin, was previously isolated by positional cloning. In this study, we report the nucleotide sequence of a 5,113-base pair region containing a japonica susceptibility pi-ta allele, which has overall 99.6% nucleotide identity to the indica Pi-ta allele conferring resistance. The intron region shows the levels of sequence diversity that typically differentiate genes from indica and japonica rices, but the other gene regions show less diversity. Sequences of the Pi-ta allele from resistant cultivars Katy and Drew from the southern United States are identical to the resistance Pi-ta sequence. Sequences from susceptible cultivars El Paso 144 and Cica 9 from Latin America define a third susceptibility haplotype. This brings the total number of Pi-ta haplotypes identified to four, including the resistance allele and three susceptibility alleles. The Pi-ta locus shows low levels of DNA polymorphism compared with other analyzed R genes. Understanding the natural diversity at the Pi-ta locus is important for designing specific markers for incorporation of this R gene into rice-breeding programs.

scholarly journals Efficient authentic fine mapping of the rice blast resistance gene Pik-h in the Pik cluster, using new Pik-h-differentiating isolates

2008 ◽  
Vol 22 (2) ◽  
pp. 289-299 ◽  
Author(s):  
Xin Xu ◽  
N. Hayashi ◽  
C. T. Wang ◽  
H. Kato ◽  
T. Fujimura ◽  
...  
Keyword(s):  
Resistance Gene ◽  
Fine Mapping ◽  
Rice Blast ◽  
Blast Resistance ◽  
Rice Blast Resistance ◽  
Blast Resistance Gene

scholarly journals Fine Mapping and Candidate Gene Discovery of the Soybean Mosaic Virus Resistance Gene, Rsv4

2010 ◽  
Vol 3 (1) ◽  
Author(s):  
M. A. Saghai Maroof ◽  
Dominic M. Tucker ◽  
Jeffrey A. Skoneczka ◽  
Brian C. Bowman ◽  
Sucheta Tripathy ◽  
...  
Keyword(s):  
Candidate Gene ◽  
Mosaic Virus ◽  
Resistance Gene ◽  
Fine Mapping ◽  
Virus Resistance ◽  
Soybean Mosaic Virus ◽  
Gene Discovery ◽  
Virus Resistance Gene
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