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journal1 ›› 2017, Vol. 33 ›› Issue (2/3): 415-420.DOI: 10.16409/j.cnki.2095-039x.2017.03.017

• SCIENTIFIC NOTES • Previous Articles     Next Articles

Biological Control of Crown Gall Disease using Agrobacterium rhizogenes Strain K1026

WEI Yanli1, YANG Hetong1, LI Jishun1, HU Jindong1, LI Guotian2, RYDER Maarten3   

  1. 1. Shandong Provincial Key Laboratory of Applied Microbiology/Ecology Institute of Shandong Academy of Sciences; Jinan 250014, China;
    2. Shandong Institute of Pomology, Tai'an 271000, China;
    3. School of Agriculture, Food and Wine, University of Adelaide, Adelaide 5064, Australia
  • Received:2016-05-17 Online:2017-06-08 Published:2017-04-08

Abstract: Crown gall, cause by pathogenic Agrobacterium spp., is a serious problem in the production of cherry, peach and other fruits in Shandong and other provinces of China. The biological control agent Agrobacterium rhizogenes K1026 was developed in Australia and has been used commercially in a number of countries. However, K1026 has not been registered or made commercially available in China. Pathogenic agrobacteria were isolated from galls of cherry and peach, and soil collected from a cherry nursery in Shandong Province. More than 100 isolates were classified as Agrobacterium rhizogenes. The sensitivities of 37 isolates to K1026 were tested on Stonier's medium. All isolates were sensitive to antibiotics produced by strain K1026, exhibiting at least five different types of inhibition pattern. Crown gall caused by all 37 pathogenic strains was completely controlled by inoculation with strain K1026 in a carrot root disc bioassay. This result suggests that biocontrol of crown gall on cherry and peach in Shandong using A. rhizogenes K1026 is feasible.

Key words: crown gall, Agrobacterium rhizogenes, biological control, cherry, peach

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