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2011•Journal of Biological ControlRequires access

Screening,Evaluation and Utilization of Antagonistic Bacteria against Xanthomonas oryzae pv.oryzicola

Zhiyi Chen

Open publisher page 3 citations

Abstract

In this paper,1173 bacterial strains were isolated from Xanthomonas oryzae pv.oryzicola leaves infected,healthy leaves and rhizosphere of rice plants sampled in Nanjing,Taizhou,Yangzhou and Suqian of Jiangsu province.Among the isolated strains,12 strains demonstrated high inhibition against X.oryzae pv.oryzicola.Diameter of inhibition zones of 4 strains were more than 27 mm.Control efficiencies of strain Lx-11 were 62.5% and 60.2% in pot and field trials,respectively,significantly higher than those of 20% bismerthlazol treatment(51.2% and 45.8%).Based on morphological,physiological and biochemical characteristics and 16S rDNA sequence analysis,the strain Lx-11 was identified to be Bacillus amyloliquefaciens.

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What this paper is about

In this paper,1173 bacterial strains were isolated from Xanthomonas oryzae pv.oryzicola leaves infected,healthy leaves and rhizosphere of rice plants sampled in Nanjing,Taizhou,Yangzhou and Suqian of Jiangsu province.Among the isolated strains,12 strains demonstrated high inhibition against X.oryzae pv.oryzicola.Diameter of inhibition zones of 4 strains were more than 27 mm.Control efficiencies of strain Lx-11 were 62.5% and 60.2% in pot and field trials,respectively,significantly higher than those of 20% bismerthlazol treatment(51.2% and 45.8%).Based on morphological,physiological and biochemical characteristics and 16S rDNA sequence analysis,the strain Lx-11 was identified to be Bacillus amyloliquefaciens.

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Available abstract

In this paper,1173 bacterial strains were isolated from Xanthomonas oryzae pv.oryzicola leaves infected,healthy leaves and rhizosphere of rice plants sampled in Nanjing,Taizhou,Yangzhou and Suqian of Jiangsu province.Among the isolated strains,12 strains demonstrated high inhibition against X.oryzae pv.oryzicola.Diameter of inhibition zones of 4 strains were more than 27 mm.Control efficiencies of strain Lx-11 were 62.5% and 60.2% in pot and field trials,respectively,significantly higher than those of 20% bismerthlazol treatment(51.2% and 45.8%).Based on morphological,physiological and biochemical characteristics and 16S rDNA sequence analysis,the strain Lx-11 was identified to be Bacillus amyloliquefaciens.

Key concepts: Bacillus amyloliquefaciens, Xanthomonas oryzae, Biology, Rhizosphere, Strain (injury), 16S ribosomal RNA, Bacteria, Xanthomonas

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