Siderophore based heavy metal resistant green fungicides for sustainable environment
The growing cost of pesticides and consumer demand for pesticide-free food has led to a search for substitutes for these products. In this regards siderophore producing PGPR has been recognized as effective biocontrol agent against plant pathogens. Though the siderophores are specific ferric ion chelator, but they can also bind other metals also. Thus heavy metal contaminated soil can be heavily influenced by siderophores. In present study in-vitro phytopathogen suppression activity of siderophoregenic preparations of Ni and Mn resistant Alcaligenes sp. STC1 and Acinetobacter sp. SH-94B isolated from soil were found superior over the chemical pesticide. Siderophore rich culture broth and siderophore rich supernatant exerted antifungal activity against Aspergillus niger NCIM 1025, Aspergillus flavus NCIM 650, Fusarium oxysporum NCIM 1281, Alternaria alternata ARI 715, Cercospora arachichola, Metazhizium anisophilia NCIM 1311 and Pseudomonas solanacerum NCIM 5103. Siderophore rich broth and supernatant exhibited potent antifungal activity vis-(a)-vis oraganophosphorus chemical fungicide; kitazine. The minimum fungicidal concentration required was 25 μl for Aspergillus niger, Aspergillus flavus, Fusarium oxysporum, Cercospora arachichola, Metazhizium anisophilia, Pseudomonas solanacerum and 75 μl for A. alternata.
Alcaligenes sp Acinetobacter sp siderophores phytopathogen biocontrol: PGPR
Sayyed RZ Redyy MS
Department of Microbiology, ShriS. I. Patil Arts, G. B. Patel Science and STSKV Sangh Commerce Colle Dept of Plant Pathology & Entomology, University of Auburn, Auburn, US
国际会议
The 2nd Asian PGPR Conference(第二届亚洲植物促生根际细菌会议)
北京
英文
528-534
2011-08-21（万方平台首次上网日期，不代表论文的发表时间）