IMPORTANT BIOCONTROL TRAITS OF MICROBIAL ANTAGONISTS OF LEAF ROT DISEASE OF COCONUT
Keywords:
Leaf Rot Disease of Coconut, Plant Diseases
Abstract
Leaf rot disease of coconut, which occurs superimposed on root (wilt) disease of coconut in about 65 % of the cases, is an important disease prevalent in Kerala State of India. Colletotrichum gloeosporioides and Exserohilum rostratum are the main fungal pathogens of the disease, which disfigure the leaves and reduce yield substantially. Several biocontrol agents have been identified which reduce the disease development by these fungal pathogens. Pseudomonas spp. exhibit a host of mechanisms, which act in concert to bring about biocontrol activity. Bacillus spp. work mainly through production of antibiotics and other non-volatile metabolites. Mycoparasitism was the main contributing factor for actinomycetes group.
References
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Swinburne, T.R., Barr, J. and Brown, A.E. 1975. Production of antibiotics by Bacillus subtilis and their effect on fungal colonists of apple leaf scars. Trans. Br. Mycol. Soc. 65 : 211-217.
Teliz-Ortiz, M. and Burkholder, W.H. 1960. A strain of Pseudomonas fluorescens antagonistic to Pseudomonas phaseolicola and other bacterial plant pathogens. Phytopathology. 50 : 119-123.
Thomashow, L.S. and Weller, D.M. 1990. Role of antibiotics and siderophores in biocontrol of take-all disease of wheat. Plant and Soil. 129 : 93-99.
Voisard, C., Keel, C., Haas, D. and Defago, G. 1989. Cyanide production by Pseudomonas fluorescens helps suppress black root rot of tobacco under gnotobiotic conditions. EMBO J. 8: 351-358.
Blakeman, J.P. and Brodie, I.S. 1976. Inhibition of pathogens by epiphytic bacteria on aerial plant surfaces. In Microbiology of Aerial Plant Surfaces. (Eds.) C.H. Dickinson and T.F. Preece. pp. 529-557. Academic Press, London.
Blakeman, J.P. and Fokkema, N.J. 1982. Potential for biological control of plant disease on the phylloplane. Annu. Rev. Phytopathol. 20 : 167-192.
Chet, I. 1987. Trichoderma- application, mode of action, and potential as a biocontrol agent of soil- borne plant pathogenic fungi. In Innovative Approaches to Plant Disease Control. (Ed.) I. Chet. pp. 137-160. John Wiley and Sons, New York.
Chet, I., Ordentlich, A., Shapira, R. and Oppenheim, A. 1990. Mechanisms of biocontrol of soil-borne plant pathogens by rhizobacteria. Plant and Soil. 129 : 85-92.
Droby, S., Chalutz, E., Welson, C.L. and Wisnieski, M. 1989. Character-ization of the biocontrol activity of Debaryomyces hanseni in the control of Penicillium digitatum on grape fruit. Can. J. Microbiol. 35 : 794-800.
Elad, Y., Chet, I. and Henis, Y. 1981. Biological control of Rhizoctonia solani in strawberry fields by Trichoderma harzianum. Plant and Soil. 60 : 245-254.
Fawcett, C.H. and Spencer, D.M. 1970. Plant chemotherapy with natural products. Annu. Rev. Phytopathol. 8: 403-418.
Ferriera, J.H.S., Matther, F.N. and Thomas, A.C. 1991. Biological control of Eutypa lata on grapevine by an antagonistic strain of Bacillus subtilis. Phytopathology. 81 : 283-287.
Fravel, D.R. 1988. Role of antibioses in the biocontrol of plant diseases. Annu. Rev. Phytopathol. 26 : 75-91.
Gupta, Alka, Gunasekaran, M. and Srinivasan, N. 2000. Isolation of bacterial antagonists and their in vitro evaluation against pathogens of coconut leaf rot disease. pp. 132-133. In Plant Diseases and their Control. (Eds.) Z. Shimai, Z. Guanghe and L. Huaifang. China Agricultural Scientech Press, Beijing. ISBN 7-80167-243-7/S.165.
Gupta, C.P., Dubey, R.C., Kang, S.C. and Maheshwari, D.K. 2001. Antibiosis- mediated necrotrophic effect of Pseudomonas GRC2 against two fungal plant pathogens. Current Science. 81 (1) : 91-94.
Howell, C.R. 1982. Effect of Gliocladium virens on Pythium ultimum, Rhizoctonia solani and damping-off of cotton seedlings. Phytopathology. 72 : 496-498.
Johnson, D.E. 1931. The antibiosis of certain bacteria to smuts and some other fungi. Phytopathology. 21 : 843-863.
Johri, K., Saksena, S.B. and Johri, B.N. 1975. Volatile metabolites of soil fungi in relation to spore germination and mycelial growth. Current Science. 44 (10) : 605-607.
Lundborg, A. and Unestam, T. 1980. Antagonism against Fomes annosus. Comparison between different test methods in vitro and in vivo. Mycopathologia. 70 (2) : 107-115.
Mayer, J.M. and Abdallah, M.A. 1978. The fluorescent pigment of Pseudomonas fluorescens : biosynthesis, purification and physico-chemical properties. J. Gen. Microbiol. 107 : 319.
McKeen, C.D., Reilly, C.C. and Pusey, P.L. 1986. Production and partial characterization of antifungal substances antagonistic to Monilinia fructicola from Bacillus subtilis. Phytopathology. 76 : 136-189.
O’Sullivan, D.J. and O’Gara, F. 1992. Traits of fluorescent Pseudomonas spp. involved in suppression of plant root pathogens. Microbiol. Rev. 56 (4) : 662-676.
Schwyn, B. and Neilands, J.B. 1987. Universal chemical assay for the detection and determination of siderophores. Anal. Biochem. 160: 47-56.
Swinburne, T.R., Barr, J. and Brown, A.E. 1975. Production of antibiotics by Bacillus subtilis and their effect on fungal colonists of apple leaf scars. Trans. Br. Mycol. Soc. 65 : 211-217.
Teliz-Ortiz, M. and Burkholder, W.H. 1960. A strain of Pseudomonas fluorescens antagonistic to Pseudomonas phaseolicola and other bacterial plant pathogens. Phytopathology. 50 : 119-123.
Thomashow, L.S. and Weller, D.M. 1990. Role of antibiotics and siderophores in biocontrol of take-all disease of wheat. Plant and Soil. 129 : 93-99.
Voisard, C., Keel, C., Haas, D. and Defago, G. 1989. Cyanide production by Pseudomonas fluorescens helps suppress black root rot of tobacco under gnotobiotic conditions. EMBO J. 8: 351-358.
Published
2003-06-01
How to Cite
Alka Gupta. (2003). IMPORTANT BIOCONTROL TRAITS OF MICROBIAL ANTAGONISTS OF LEAF ROT DISEASE OF COCONUT. CORD, 19(01), 34. https://doi.org/10.37833/cord.v19i01.368
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Articles
