Journal
CROP PROTECTION
Volume 28, Issue 8, Pages 634-639Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.cropro.2009.03.017
Keywords
PGPE; Endophytic bacteria; Identification; Antifungal activity
Categories
Funding
- National Natural Science Foundation of China [30500332]
- China National High-Tech 863 Program [2006AA10A210]
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A Bacillus sp., strain CHMI, possessing antifungal activity was isolated from a paddy field in the present study. On the basis of the comprehensive taxonomic data from morphological, physiological and biochemical characteristics, and 16S rDNA sequence analysis, CHM1 was identified to be Bacillus licheniformis. The culture filtrate of CHM1, even when sterilized, inhibited mycelial growth of Fusarium oxysporum, Rhizoctonia solani, Botrytis cinereapers, Gibberella zeae, Dothiorella gregaria and Colletotrichum gossypii in vitro. When CHM1 culture suspension was sprayed on plant leaves, it protected maize (Zea mays) against infection by Bipolaris maydis and horsebean (Vicia faba) against infection by R. solani with a mean control efficacy of 70.22 and 62.79%, respectively. The culture suspension of CHM1, drenched around the root of rice and cole (Brassica napus), promoted seedling growth. The data here showed that Bacillus sp. CHMI could be a potential agent to protect maize, horsebean, cole and rice (Oryza sativa) plants from infection by pathogenic fungi in vivo and had properties as a plant growth-promoting endophytic bacterium (PGPE). (C) 2009 Elsevier Ltd. All rights reserved.
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