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Geographic Distribution of Avirulence Genes of the Rice Blast Fungus Magnaporthe oryzae in the Philippines

A total of 131 contemporary and 33 reference isolates representing a number of multi-locus genotypes of Magnaporthe oryzae were subjected to a PCR test to detect the presence/absence of avirulence (Avr) genes. Results revealed that the more frequently occurring genes were Avr-Pik (81.50%), Avr-Pita...

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Autores principales: Lopez, Ana Liza C., Yli-Matilla, Tapani, Cumagun, Christian Joseph R.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6352036/
https://www.ncbi.nlm.nih.gov/pubmed/30669441
http://dx.doi.org/10.3390/microorganisms7010023
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author Lopez, Ana Liza C.
Yli-Matilla, Tapani
Cumagun, Christian Joseph R.
author_facet Lopez, Ana Liza C.
Yli-Matilla, Tapani
Cumagun, Christian Joseph R.
author_sort Lopez, Ana Liza C.
collection PubMed
description A total of 131 contemporary and 33 reference isolates representing a number of multi-locus genotypes of Magnaporthe oryzae were subjected to a PCR test to detect the presence/absence of avirulence (Avr) genes. Results revealed that the more frequently occurring genes were Avr-Pik (81.50%), Avr-Pita (64.16%) and Avr-Pii (47.98%), whereas the less frequently occurring genes were Avr-Pizt (19.08%) and Avr-Pia (5.20%). It was also laid out that the presence of Avr genes in M. oryzae is strongly associated with agroecosystems where the complementary resistant (R) genes exist. No significant association, however, was noted on the functional Avr genes and the major geographic locations. Furthermore, it was identified that the upland varieties locally known as “Milagrosa” and “Waray” contained all the R genes complementary to the Avr genes tested.
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spelling pubmed-63520362019-02-01 Geographic Distribution of Avirulence Genes of the Rice Blast Fungus Magnaporthe oryzae in the Philippines Lopez, Ana Liza C. Yli-Matilla, Tapani Cumagun, Christian Joseph R. Microorganisms Article A total of 131 contemporary and 33 reference isolates representing a number of multi-locus genotypes of Magnaporthe oryzae were subjected to a PCR test to detect the presence/absence of avirulence (Avr) genes. Results revealed that the more frequently occurring genes were Avr-Pik (81.50%), Avr-Pita (64.16%) and Avr-Pii (47.98%), whereas the less frequently occurring genes were Avr-Pizt (19.08%) and Avr-Pia (5.20%). It was also laid out that the presence of Avr genes in M. oryzae is strongly associated with agroecosystems where the complementary resistant (R) genes exist. No significant association, however, was noted on the functional Avr genes and the major geographic locations. Furthermore, it was identified that the upland varieties locally known as “Milagrosa” and “Waray” contained all the R genes complementary to the Avr genes tested. MDPI 2019-01-19 /pmc/articles/PMC6352036/ /pubmed/30669441 http://dx.doi.org/10.3390/microorganisms7010023 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Lopez, Ana Liza C.
Yli-Matilla, Tapani
Cumagun, Christian Joseph R.
Geographic Distribution of Avirulence Genes of the Rice Blast Fungus Magnaporthe oryzae in the Philippines
title Geographic Distribution of Avirulence Genes of the Rice Blast Fungus Magnaporthe oryzae in the Philippines
title_full Geographic Distribution of Avirulence Genes of the Rice Blast Fungus Magnaporthe oryzae in the Philippines
title_fullStr Geographic Distribution of Avirulence Genes of the Rice Blast Fungus Magnaporthe oryzae in the Philippines
title_full_unstemmed Geographic Distribution of Avirulence Genes of the Rice Blast Fungus Magnaporthe oryzae in the Philippines
title_short Geographic Distribution of Avirulence Genes of the Rice Blast Fungus Magnaporthe oryzae in the Philippines
title_sort geographic distribution of avirulence genes of the rice blast fungus magnaporthe oryzae in the philippines
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6352036/
https://www.ncbi.nlm.nih.gov/pubmed/30669441
http://dx.doi.org/10.3390/microorganisms7010023
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