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Avirulence Gene AVR-Pita1 in the Rice Blast Fungus
Res. Plant Dis. 2019;25:1-7
Published online March 31, 2019
© 2019 The Korean Society of Plant Pathology.

Sook-Young Park*

Department of Plant Medicine, College of Life Science and Natural Resources, Sunchon National University, Suncheon 57922, Korea
Tel: +82-61-750-3868, Fax: +82-61-750-3868, E-mail: spark@scnu.ac.kr, ORCID https://orcid.org/0000-0003-1267-1111
Received March 12, 2019; Revised March 21, 2019; Accepted March 22, 2019.
cc This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The rice blast fungus, Magnaporthe oryzae, is one of the most economically important crop diseases. In addition, rice-M. oryzae interaction is a classical gene-for-gene host-pathogen system. Race variation in pathogen groups was proposed as the main mechanism for rapid break-down of resistance in newly introduced rice cultivars. These new pathogen race variations may be caused by changes in an avirulence gene, such as (i) point mutations, (ii) insertion of transposons, and (iii) frame shifts. The avirulence gene AVR-Pita1 is representative avirulence gene in which all of these mutations are reported. In this review, we present a useful information for avirulence gene AVR-Pita1 and its homologous genes AVR-Pita2 and AVR-Pita3. We also review examples that cause mutations in these evolutionarily significant genes.
Keywords : Avirulence gene, AVR-Pita1, Magnaporthe oryzae, Rice blast, Transposon


March 2019, 25 (1)