Chinese Journal of Rice Science

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Pathotype Identification and Distribution of Xanthomonas oryzae pv. oryzae in Japonica Rice Planted Region of the Northwest Yunnan Plateau, China

PENG Xin-xi1,2;YU Teng-qiong1;LI Jun3;YANG Ya-yun1;HE Jian-ping1,2;LI Jin-ling3 ; XU Fu-rong1;DAI Lu-yuan1,*   

  1. 1Institute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205, China; 2School of Life Sciences, Yunnan University, Kunming 650091, China; 3Institute of Agricultural Sciences of Xishuangbanna, Jinghong 666100, China; *Corresponding author, E-mail: luyuandai@yahoo.com.cn
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-01-10 Published:2011-01-10

云南滇西北高原粳稻区白叶枯病菌致病型鉴定及分布

彭新禧1,2;余腾琼1;李俊3;杨雅云1;和建平1,2;李锦玲3;徐福荣1;戴陆园1,*   

  1. 1云南省农业科学院 生物技术与种质资源研究所,云南 昆明650205; 2云南大学 生命科学学院, 云南 昆明650091; 3西双版纳州农业科学研究所, 云南 景洪 666100;*通讯联系人, E-mail: luyuandai@yahoo.com.cn

Abstract: Thirty isolates of Xanthomonas oryzae pv. oryzae (Xoo) collected from japonica rice in the northwest Yunnan plateau including Chuxiong, Dali and Lijiang prefectures were tested on seven differential cultivars(Haonuoyang, TN1, Kogyoku, Zhenzhu’ai, IR26, Nanjing 33 and Kinmaze) to analyze their pathotypes and distributions. Nine pathotypes were identified, of which pathotype Ⅰ was dominant and pathotype Ⅴ was the most virulent. The isolate DL089 might be a new pathotype according to its disease reaction pattern (RRRRSSS) (R, resistant; S, susceptible) in the seven differential cultivars.

Key words: japonica rice, Yunnan plateau rice planted region, Xanthomonas oryzae pv. oryzae, pathotype, differential cultivar, distribution

摘要: 用7个高原粳稻白叶枯病菌鉴别品种(毫糯扬、TN1、黄玉、珍珠矮、IR26、南粳33、金南风)对2008年采自云南滇西北高原粳稻区楚雄州、大理州、丽江市的30个白叶枯病样本分离菌株进行致病型鉴定,并分析其分布。结果表明,供试的30个菌株可分为9种致病型,Ⅰ型为优势群,Ⅴ型为毒性群。菌株DL0819在上述7个鉴别品种上的病情反应模式为RRRRSSS(R为抗, S为感),有别于曾报道过的所有菌株致病型,故推断它为一个新型菌株。

关键词: 粳稻, 云南高原稻区, 白叶枯病菌, 致病型, 鉴别品种, 分布