Fusarium species from the cassava root rot complex in West Africa
Fusarium species are a significant component of the set of fungi associated with cassava root rot. Yield losses due to root rot average 0.5 to 1 ton/ha but losses >3 ton/ha, an equivalent of 15 to 20% yield, often occur. This paper reviews previous work on cassava root rot and summarizes a few recen...
| Autores principales: | , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
2006
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| Acceso en línea: | https://hdl.handle.net/10568/91354 |
| _version_ | 1855514928591405056 |
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| author | Bandyopadhyay, Ranajit Mwangi, M. Aigbe, S.O. Leslie, John F. |
| author_browse | Aigbe, S.O. Bandyopadhyay, Ranajit Leslie, John F. Mwangi, M. |
| author_facet | Bandyopadhyay, Ranajit Mwangi, M. Aigbe, S.O. Leslie, John F. |
| author_sort | Bandyopadhyay, Ranajit |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Fusarium species are a significant component of the set of fungi associated with cassava root rot. Yield losses due to root rot average 0.5 to 1 ton/ha but losses >3 ton/ha, an equivalent of 15 to 20% yield, often occur. This paper reviews previous work on cassava root rot and summarizes a few recent studies on Fusarium species associated with the disease. Our studies in Cameroon showed that 30% of rotted tubers were infected by Fusarium spp. 12 months after planting and represented 25% of all the fungal isolates recovered. Other commonly recovered fungi were Botryodiplodia theobromae and Armillaria spp. Numerous and diverse species of Fusarium were associated with rotted cassava roots in Nigeria and Cameroon. At least 13 distinct amplified fragment length polymorphism (AFLP) groups of Fusarium were distinguishable, each group probably a distinct species, and many of them might represent previously undescribed Fusarium species. The two largest of the AFLP groups correspond to F. oxysporum and F. solani species complex. The distribution of Fusarium spp. varied among countries and among locations within a country, suggesting that germ plasm resistant at one location may not be resistant at another. Fusarium spp. also cause seedling blight of cassava and can be recovered from the stems of infected plants up to 1 m above the ground. Therefore, the pathogen can spread with stems cut as planting material. Fusarium spp. also can colonize Chromolaena odorata, the dominant weed in short fallows, which could further complicate management efforts by serving as an alternative host for strains that colonize cassava. |
| format | Journal Article |
| id | CGSpace91354 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2006 |
| publishDateRange | 2006 |
| publishDateSort | 2006 |
| record_format | dspace |
| spelling | CGSpace913542023-06-12T08:58:03Z Fusarium species from the cassava root rot complex in West Africa Bandyopadhyay, Ranajit Mwangi, M. Aigbe, S.O. Leslie, John F. fusarium species cassava root rot tuberous roots pathogens trichoderma species armillaria species Fusarium species are a significant component of the set of fungi associated with cassava root rot. Yield losses due to root rot average 0.5 to 1 ton/ha but losses >3 ton/ha, an equivalent of 15 to 20% yield, often occur. This paper reviews previous work on cassava root rot and summarizes a few recent studies on Fusarium species associated with the disease. Our studies in Cameroon showed that 30% of rotted tubers were infected by Fusarium spp. 12 months after planting and represented 25% of all the fungal isolates recovered. Other commonly recovered fungi were Botryodiplodia theobromae and Armillaria spp. Numerous and diverse species of Fusarium were associated with rotted cassava roots in Nigeria and Cameroon. At least 13 distinct amplified fragment length polymorphism (AFLP) groups of Fusarium were distinguishable, each group probably a distinct species, and many of them might represent previously undescribed Fusarium species. The two largest of the AFLP groups correspond to F. oxysporum and F. solani species complex. The distribution of Fusarium spp. varied among countries and among locations within a country, suggesting that germ plasm resistant at one location may not be resistant at another. Fusarium spp. also cause seedling blight of cassava and can be recovered from the stems of infected plants up to 1 m above the ground. Therefore, the pathogen can spread with stems cut as planting material. Fusarium spp. also can colonize Chromolaena odorata, the dominant weed in short fallows, which could further complicate management efforts by serving as an alternative host for strains that colonize cassava. 2006 2018-03-07T11:25:41Z 2018-03-07T11:25:41Z Journal Article https://hdl.handle.net/10568/91354 en Limited Access Bandyopadhyay, R., Mwangi, M., Aigbe, S.O. & Leslie, J.F. (2006). Fusarium species from the cassava root rot complex in West Africa. Phytopathology, 96(6), 673-676. |
| spellingShingle | fusarium species cassava root rot tuberous roots pathogens trichoderma species armillaria species Bandyopadhyay, Ranajit Mwangi, M. Aigbe, S.O. Leslie, John F. Fusarium species from the cassava root rot complex in West Africa |
| title | Fusarium species from the cassava root rot complex in West Africa |
| title_full | Fusarium species from the cassava root rot complex in West Africa |
| title_fullStr | Fusarium species from the cassava root rot complex in West Africa |
| title_full_unstemmed | Fusarium species from the cassava root rot complex in West Africa |
| title_short | Fusarium species from the cassava root rot complex in West Africa |
| title_sort | fusarium species from the cassava root rot complex in west africa |
| topic | fusarium species cassava root rot tuberous roots pathogens trichoderma species armillaria species |
| url | https://hdl.handle.net/10568/91354 |
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