Nutsugah, S. K., Twumasi, J. K., Chipili, J., Sere, Y. and Sreenivasaprasad, S.. (2008) Diversity of the Rice Blast Pathogen Populations in Ghana and Strategies for Resistance Management. Plant Pathology Journal, Vol.7 (No.1). pp. 109-113. ISSN 1812-5387

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Abstract

The present study describes the outputs of a collaborative research programme funded by the UK`s Department for International Development-Crop Protection Program to investigate the genetic (lineages) and pathogenic (pathotypes) diversity of the blast fungus populations and characterize the key sites suitable for resistance screening. Seventy-one Magnaporthe grisae isolates were collected from seven regions where rice is grown, representing blast populations in Ghana. Following molecular characterization, these isolates were grouped into four distinct lineages designated as GH-1, GH-2, GH-3 and GH-4 and 25 pathotypes. GH-1 was the major lineage comprising 52% of all the isolates and was present across the country on up to 24 rice cultivars. GH-2 comprising of 30% of the isolates sampled was restricted in distribution mainly from Hohoe area on up to seven cultivars. GH-3 consisted of six isolates from Western, Eastern and Central Regions while GH-4 consisted of two isolates from Nyankpala in Northern Region. Occurrence of blast pathogen on wild rice and weed hosts has been observed and their potential impact needs to be considered in blast/weed management. Baseline data new to Ghana on the diversity and distribution pattern of the blast pathogen populations have been established and key sites identified. Adaptive research is continuing to develop technologies suitable for long-term pathogen monitoring, identify sources of resistance and develop appropriate blast management strategies.

Item Type:	Journal Article
Subjects:	Q Science > QK Botany S Agriculture > SB Plant culture Q Science > QR Microbiology
Divisions:	Faculty of Science > Life Sciences (2010- ) > Warwick HRI (2004-2010)
Library of Congress Subject Headings (LCSH):	Pyricularia oryzae, Rice blast disease -- Ghana, Rice -- Diseases and pests -- Ghana, Rice -- Disease and pest resistance -- Ghana, Fungi -- Genetics
Journal or Publication Title:	Plant Pathology Journal
Publisher:	Asian Network for Scientific Information (A NSINE T)
ISSN:	1812-5387
Date:	2008
Volume:	Vol.7
Number:	No.1
Page Range:	pp. 109-113
Identification Number:	10.3923/ppj.2008.109.113
Status:	Peer Reviewed
Access rights to Published version:	Open Access
Funder:	Great Britain. Dept. for International Development, Natural Resources International (NRI)
Grant number:	R7552 (DFID)
References:	Anonymous, 2001. Agriculture in Ghana, facts and figures. The Statistics, Research and Information Directorate, MOFA, Accra, Ghana, pp: 39. Anonymous, 2004. Production and cropped area for major crops in Ghana-2003. Statistics, Research and Information Directorate (SRID) MOFA, Accra, Ghana. Bonman, J.M., G.S. Khush and R.J. Nelson, 1992. Breeding rice for resistance to pests. Annu. Rev. Phytopathol., 30: 507-528. Borromeo, E.S., R.J. Nelson, J.M. Bonman and H. Leung, 1993. Genetic differentiation among isolates of Pyricularia infecting rices and weed hosts. Phytopathology, 83: 393-399. Chipili, J., 2000. Characterisation of populations of Magnaporthe grisea, the rice blast fungus, in some of the West African countries. Ph.D Thesis. University of Exeter, UK., pp: 130. Chipili, J., S. Sreenivasaprasad, S.K. Nutsugah, J.K. Twumasi and K. Dartey, 2003. Rice blast management in Ghana: Characterization of the pathogen diversity. J. Ghana Sci. Assoc., 5: 20-25. Chipili, J., S. Sreenivasaprasad, Y. Séré, S.K. Nutsugah, J. Twumasi, A.E. Brown and N.J. Talbot, 2002. Blast pathogen population diversity in West Africa and strategies for achieving durable resistance. Proceedings of the 2nd Regional Rice Research Review, Apr. 9-12, Bouaké, Côte d'Ivoire. Fomba, S.N. and D.R. Taylor, 1994. Rice Blast in West Africa: Its Nature and Control. In: Rice Blast Disease, Zeigler, R.S., S.A. Leong and P.S. Teng (Eds.). CAB International, Wallingford, Oxon, UK and International Rice Research Institute, Manilla, The Philippines, pp: 343-355. Hamer, J.E. and S. Givan, 1990. Genetic-mapping with dispersed repeated sequences in the rice blast fungus-mapping the Smo locus. Mol. Gen. Genet., 223: 487-495. Levy, M., J. Romao, M.A. Marchetti and J.E. Hamer, 1991. DNA fingerprinting with a dispersed repeated sequence resolves pathogen diversity in the rice blast fungus. Plant Cell, 3: 95-102. Ling, K.C. and S.H. Ou, 1969. Standardization of the international race numbers of Pyricularia oryzae. Phytopathology, 59: 339-342. Notteghem, J.L. and P. Baudin, 1981. Main rice diseases in West Africa. West Africa Rice Development Association, Monrovia, Liberia. Nutsugah, S.K., W. Dogbe, J.K. Twumasi, K. Dartey, J. Chipili, S. Sreenivasaprasad and Y. Séré, 2005. Prevalence of rice blast and varietal screening in Ghana. J. Sci. Technol., 25: 18-34. Rossman, A.Y., R.J. Howard and B. Valent, 1990. Pyricularia grisea, the correct name for the rice blast disease fungus. Mycologia, 82: 509-512. Singh, B.N., M.P. Jones, S.N. Fomba, Y. Séré, A.A. Sy, K. Akator, P. Ngninbeyie and S.W. Ahn, 2000. Breeding for Blast Resistance in Lowland Rice in West Africa. In: Advances in Rice Blast Research, Tharreau, D., M.H. Lebrun, N.J. Talbot and J.L. Notteghem (Eds.). Kluwer Academic, The Netherlands, pp: 112-128. Sreenivasaprasad, S., 2000. Isolation of Fungal Nucleic Acids. In: Nucleic Acids Protocols Handbook, Rapley, R. and J.M. Walker (Eds.). Humana Press, USA., pp: 37-45. Teng, P.S., 1994. The Epidemiological Basis for Blast Management. In: Rice Blast Disease, Zeigler, R.S., S.A. Leong and P.S. Teng (Eds.). CAB International, Wallingford, Oxon, UK and International Rice Research Institute, Manila, The Philippines, pp: 409-433. Valent, B., L. Farrall and F.G. Chumley, 1991. Magnaporthe grisea genes for pathogenicity and virulence identified through a series of back crosses. Genetics, 127: 87-101. Webster, J., 1980. Introduction to Fungi. 2nd Edn., Cambridge University Press, Cambridge, UK.
URI:	http://wrap.warwick.ac.uk/id/eprint/630

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