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Diversity and Distribution of Rice Blast (Pyricularia oryzae Cavara) Races in Japan.
Plant Dis 2016; 100(4):816-823PD

Abstract

In total, 310 rice blast (Pyricularia oryzae Cavara) isolates from Japan showed wide variation in virulence. Virulence on rice (Oryza sativa L.) differential varieties (DV) harboring resistance genes Pish, Pia, Pii, Pi3, Pi5(t), Pik-s, and Pi19(t) ranged from 82.9 to 100.0%. In contrast, virulence on DV possessing Pib, Pit, Pik-m, Pi1, Pik-h, Pik, Pik-p, Pi7(t), Pi9(t), Piz, Piz-5, Piz-t, Pita-2, Pita, Pi12(t), and Pi20(t) ranged from 0 to 21.6%. Cluster analysis using the reaction patterns of the DV classified isolates into three groups: I, virulent to Pik, Pik-h, Pik-p, Pik-m, Pi1, and Pi7(t); IIa, avirulent to the preceding 6 genes and virulent to Pia, Pii, Pi3, and Pi5(t); and IIb, avirulent to all 10 genes. Group I was limited to northern Japan and group IIb to central Japan, while group IIa was distributed throughout Japan. We estimate that group IIa represents the original population and that groups I and IIb arose from it through minor changes in pathogenicity. We classified these isolates into 123 races by a new designation system and conclude that the rice blast races in Japan are less diverse than previously thought.

Authors+Show Affiliations

Tottori University, 4-101 Koyama-Minami Tottori, Tottori 680-8553, Japan.National Institute of Agrobiological Sciences, 2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602, Japan.Japan International Research Center for Agricultural Sciences, 1-1, Ohwashi, Tsukuba, Ibaraki 304-8686, J, Japan.Tropical Agricultural Research Front, Japan International Research Center for Agricultural Sciences, 1091;1 Ishigaki, Okinawa 907-0002, Japan.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30688611

Citation

Kawasaki-Tanaka, A, et al. "Diversity and Distribution of Rice Blast (Pyricularia Oryzae Cavara) Races in Japan." Plant Disease, vol. 100, no. 4, 2016, pp. 816-823.
Kawasaki-Tanaka A, Hayashi N, Yanagihara S, et al. Diversity and Distribution of Rice Blast (Pyricularia oryzae Cavara) Races in Japan. Plant Dis. 2016;100(4):816-823.
Kawasaki-Tanaka, A., Hayashi, N., Yanagihara, S., & Fukuta, Y. (2016). Diversity and Distribution of Rice Blast (Pyricularia oryzae Cavara) Races in Japan. Plant Disease, 100(4), pp. 816-823. doi:10.1094/PDIS-04-15-0442-RE.
Kawasaki-Tanaka A, et al. Diversity and Distribution of Rice Blast (Pyricularia Oryzae Cavara) Races in Japan. Plant Dis. 2016;100(4):816-823. PubMed PMID: 30688611.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Diversity and Distribution of Rice Blast (Pyricularia oryzae Cavara) Races in Japan. AU - Kawasaki-Tanaka,A, AU - Hayashi,N, AU - Yanagihara,S, AU - Fukuta,Y, Y1 - 2016/02/18/ PY - 2019/1/29/entrez PY - 2016/4/1/pubmed PY - 2016/4/1/medline SP - 816 EP - 823 JF - Plant disease JO - Plant Dis. VL - 100 IS - 4 N2 - In total, 310 rice blast (Pyricularia oryzae Cavara) isolates from Japan showed wide variation in virulence. Virulence on rice (Oryza sativa L.) differential varieties (DV) harboring resistance genes Pish, Pia, Pii, Pi3, Pi5(t), Pik-s, and Pi19(t) ranged from 82.9 to 100.0%. In contrast, virulence on DV possessing Pib, Pit, Pik-m, Pi1, Pik-h, Pik, Pik-p, Pi7(t), Pi9(t), Piz, Piz-5, Piz-t, Pita-2, Pita, Pi12(t), and Pi20(t) ranged from 0 to 21.6%. Cluster analysis using the reaction patterns of the DV classified isolates into three groups: I, virulent to Pik, Pik-h, Pik-p, Pik-m, Pi1, and Pi7(t); IIa, avirulent to the preceding 6 genes and virulent to Pia, Pii, Pi3, and Pi5(t); and IIb, avirulent to all 10 genes. Group I was limited to northern Japan and group IIb to central Japan, while group IIa was distributed throughout Japan. We estimate that group IIa represents the original population and that groups I and IIb arose from it through minor changes in pathogenicity. We classified these isolates into 123 races by a new designation system and conclude that the rice blast races in Japan are less diverse than previously thought. SN - 0191-2917 UR - https://www.unboundmedicine.com/medline/citation/30688611/Diversity_and_Distribution_of_Rice_Blast__Pyricularia_oryzae_Cavara__Races_in_Japan_ L2 - http://apsjournals.apsnet.org/doi/full/10.1094/PDIS-04-15-0442-RE?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -