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Updated: Sep 21, 2025
Broth Microdilution In Vitro Screening: An Easy and Fast Method to Detect New Antifungal Compounds
Published on: February 14, 2018
Novel in vitro methods for simultaneous screening of two antagonistic bacteria against multiple fungal phytopathogens
N S Nysanth1, S L Sivapriya1, Chitra Natarajan1
1Department of Agricultural Microbiology, College of Agriculture, Kerala Agricultural University, Thiruvananthapuram, Kerala 695 522 India.
Abstract:
Two novel and rapid in vitro agar plate methods for simultaneous screening of two bacterial isolates for antagonism against multiple fungal phytopathogens in a single agar plate are described. In the modified plus streak method (MPS), in a 10 cm diameter PDA agar plate, two different bacterial isolates were screened against four fungal pathogens. The second method used 20 cm diameter PDA agar plate surface and was termed as the parallel multiple streak (PMS) method. Here, two bacterial isolates were screened for antagonism against ten fungal phytopathogens on a single agar plate surface. Our new methods are rapid and more economical, and could reduce the number of agar plates and the medium required for in vitro screening by several fold, compared to that used in the conventional dual culture plate assay.
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