| Evaluation of the Pathotypes of Xanthomonas oryzae pv. oryzae and Preliminary Analysis of the Resistant Reactions of Main Japonica Rice in the Yunnan Plateau, China |
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| 引用本文： | YU Teng-qiong LIANG Bin YE Chang-rong XU Fu-rong TANG Cui-feng MAO Xiao-qiang DAI Lu-yuan. Evaluation of the Pathotypes of Xanthomonas oryzae pv. oryzae and Preliminary Analysis of the Resistant Reactions of Main Japonica Rice in the Yunnan Plateau, China[J]. 中国农业科学(英文版), 2006, 5(4): 299-306. DOI: 10.1016/S1671-2927(06)60053-9 |
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| 作者姓名： | YU Teng-qiong LIANG Bin YE Chang-rong XU Fu-rong TANG Cui-feng MAO Xiao-qiang DAI Lu-yuan |
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| 作者单位： | [1]Insititute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205, P.R.China [2]College of Agronomy and Biotechnology, Yunnan Agricultural University. Kunming 650201, P.R.China |
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| 基金项目： | 引进国际先进农业科技计划(948计划) |
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| 摘 要： | The pathogenicity of 36 isolates of Xanthomonas oryzae pv. oryzae （Xoo）, which were collected from japonica rice varieties in the Yunnan Plateau, China, was evaluated. It was evaluated on 29 rice varieties including a set of seven varieties to identify pathogenicity, i.e., Haonuoyang, TN1, Kogyoku, Zhenzhu＇ai, IR26, Nanjing 33, and Kinmaze, which may be considered as a set of differential varieties for Xoo races from Yunnan japonica rice. The efficiency of the seven varieties was further confirmed. The results showed reversible and specific interactions between isolates and varieties. The isolates were classified into nine pathotypes from pathotyp Ⅰ to Ⅸ according to their pathogenic reactions on the seven rice varieties. The pathotype V was the epidemic, whereas pathogen Ⅶ was the most pathogenic. Most japonica varieties grown in the Yunnan Plateau were susceptible to Xoo. The rice lines IRBB21 （Xa-21）, Zhachanglong （Xa-22,, Xa- 24,）, and IR1545-339 （xa-5）, which were resistant to all the isolates tested, can be used as donors of resistant genes for bacterial blight in japonica rice breeding in the Yunnan Plateau.
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| 关 键 词： | 水稻 云南高原 中国 抗性 病变型 |
Evaluation of the Pathotypes of Xanthomonas oryzae pv. oryzae and Preliminary Analysis of the Resistant Reactions of Main Japonica Rice in the Yunnan Plateau, China |
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| YU Teng-qiong,LIANG Bin,YE Chang-rong,XU Fu-rong,TANG Cui-feng,MAO Xiao-qiang,DAI Lu-yuan. Evaluation of the Pathotypes of Xanthomonas oryzae pv. oryzae and Preliminary Analysis of the Resistant Reactions of Main Japonica Rice in the Yunnan Plateau, China[J]. 《Agricultural Sciences in China》, 2006, 5(4): 299-306. DOI: 10.1016/S1671-2927(06)60053-9 |
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| Authors: | YU Teng-qiong LIANG Bin YE Chang-rong XU Fu-rong TANG Cui-feng MAO Xiao-qiang DAI Lu-yuan |
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| Affiliation: | 1. Insititute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205, P.R. China
2. College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming 650201, P.R. China |
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| Abstract: | The pathogenicity of 36 isolates of Xanthomonas oryzae pv. oryzae (Xoo), which were collected from japonica rice varieties in the Yunnan Plateau, China, was evaluated. It was evaluated on 29 rice varieties including a set of seven varieties to identify pathogenicity, i.e., Haonuoyang, TN1, Kogyoku, Zhenzhu'ai, IR26, Nanjing 33, and Kinmaze, which may be considered as a set of differential varieties for Xoo races from Yunnan japonica rice. The efficiency of the seven varieties was further confirmed. The results showed reversible and specific interactions between isolates and varieties. The isolates were classified into nine pathotypes from pathotyp I to IX according to their pathogenic reactions on the seven rice varieties. The pathotype V was the epidemic, whereas pathogen VII was the most pathogenic. Most japonica varieties grown in the Yunnan Plateau were susceptible to Xoo. The rice lines IRBB21 (Xa-21), Zhachanglong (Xa-22t, Xa-24t), and IR1545-339 (xa-5), which were resistant to all the isolates tested, can be used as donors of resistant genes for bacterial blight in japonica rice breeding in the Yunnan Plateau. |
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| Keywords: | japonica rice Xanthomonas oryzae pv. oryzae pathotype resistance Yunnan |
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