Plant growth promoting rhizobacteria that decrease chromium toxicity in Brassica juncea

  • M. Rajkumar (Division of Bioresources Science, College of Agriculture, Chonbuk National university, Centre for Environmental Studies, Anna University) ;
  • Lee, Kui-Jae (Division of Bioresources Science, College of Agriculture, Chonbuk National university, Centre for Environmental Studies, Anna University) ;
  • Park, Jun-Sik (Division of Bioresources Science, College of Agriculture, Chonbuk National university, Centre for Environmental Studies, Anna University) ;
  • Park, In-Suk (Division of Bioresources Science, College of Agriculture, Chonbuk National university, Centre for Environmental Studies, Anna University) ;
  • Lee, Wang-Hui (Division of Bioresources Science, College of Agriculture, Chonbuk National university, Centre for Environmental Studies, Anna University)
  • Published : 2003.10.01

Abstract

The aim of the present study was to assess the importance of siderophore producing rhizobacteria on the growth of Brassica juncea under chromium stress. Pseudomonas sp. (A4) produced an iron chelating substance siderophores in iron deficient medium. Under chromium stress condition Pseudomonassp. (A4) markedly increased the root and shoot length and also biomass of Brassica juncea as compared to Pseudomonas sp. (A3). This plantgrowth promotion has been related to the microbial production of siderophore.

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