NISCAIR Online Periodicals Repository

Research Journals >
Indian Journal of Biotechnology (IJBT) >
IJBT Vol.04 [2005] >
IJBT Vol.04(2) [April 2005] >

Title: Fungicidal activity of marine actinomycetes against phytopathogenic fungi
Authors: Kathiresan, K
Balagurunathan, R
Selvam, M Masilamani
Keywords: antifungal activity
marine actinomycetes
plant pathogens
Issue Date: Apr-2005
Publisher: CSIR
IPC CodeInt.Cl.7 C12N1/02,1/04; C12R1:01
Abstract: A total of 160 isolates of marine actinomycetes were isolated from the sediment samples drawn from mangroves, estuary, sand dune, and industrially polluted coast. Of these, mangrove sediments were rich sources of marine actinomycetes. Each isolate was tested against four phytopathogenic fungi, viz. Rhizoctonia solani, Pyricularia oryzae, Helminthosporium oryzae (causing sheath blight, blast and leaf spot diseases of rice) and Colletotrichum falcatum (causing red rot disease of sugar cane). About 51% of isolates were found effective against H. oryzae and P. oryzae, 31% against R. solani, and 12.5% against C. falcatum. Of 160 isolates, 10 showed a potent activity against all the fungi tested. These isolates appeared to produce high antifungal compounds at 120 hrs of incubation period of production medium culture. Glucose and soybean meal were the best carbon and nitrogen sources, respectively and 17.5 ppt was the best salinity level for maximum antibiotic production. Cylinder plate method was found better for antifungal assay than the disc diffusion method. Based on the morphological and culture characteristics, the potent strains were identified as the species belonged to the genus Streptomyces. These strains may prove to be the potent source for isolation of agrobased fungicides.
Page(s): 271-276
ISSN: 0975-0967 (Online); 0972-5849 (Print)
Source:IJBT Vol.04(2) [April 2005]

Files in This Item:

File Description SizeFormat
IJBT 4(2) 271-276.pdf164.09 kBAdobe PDFView/Open
 Current Page Visits: 1802 
Recommend this item


Online Submission of Articles |  NISCAIR Website |  National Knowledge Resources Consortium |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2015 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 163433 since 01-Sep-2015  Last updated on 21-Jun-2016Webmaster: