›› 2012, Vol. 24 ›› Issue (5): 0-885.

• 论文 •    

Screening and identification of an antagonistic Burkholderia pyrrocinia strain A12 and its growth\|promoting effects on tobacco seedling

HAN Chao;WU Gui-yuan;LIU Ai-xin*;WANG Yu-jun*   

  1. College of Plant Protection, Shandong Agricultural University, Taian 271018, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-09-24 Published:2012-09-24

Abstract: An antagonistic bacterium strain A12 has strong antimicrobial activity to many plant pathogens. By morphological, physiological and biochemical assays, and 16S rDNA and recA gene sequence homology analysis, A12 was identified as Burkholderia pyrrocinia. Antifungal spectrum was confirmed by confrontation tests, the results showed that A12 has significant inhibitory effect against Rhizoctonia solani, Fusarium graminearum, Verticillium dahliae, etc. In greenhouse tests, B. pyrrocinia A12 showed promoting effects on tobacco chlorophyll content, photosynthesis rate, transpiration rate and root growth.

Key words: Burkholderia pyrrocinia, identification, biological control, growth promoting activity