Occurrence and spread of the banana fungus Fusarium oxysporum f. sp. cubense TR4 in Mozambique
| Autor: | A. B. Molina, Ana Mondjana, Lindy J. Rose, Anria Pretorius, Fazil Dusunceli, Henry Murray, Jack Dwyer, Jamisse Amisse, Antonia Vaz, Tomas Chiconela, Sheryl Bothma, Ilze Beukes, Chih-Ping Chao, F. Beed, Gladys Tazan, Elie L. Matabuana, Diane Mostert, Connie Fraser, Otuba M. Amugoli, Altus Viljoen |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Fungus 01 natural sciences General Biochemistry Genetics and Molecular Biology lcsh:Social Sciences 03 medical and health sciences Fusarium oxysporum lcsh:Social sciences (General) lcsh:Science lcsh:Science (General) Fusarium wilt 030304 developmental biology 0303 health sciences biology disease spread Fusarium oxysporum f.sp. cubense biology.organism_classification plant resistance lcsh:H Horticulture Foc TR4 Africa General Earth and Planetary Sciences lcsh:Q lcsh:H1-99 General Agricultural and Biological Sciences lcsh:Q1-390 010606 plant biology & botany |
| Zdroj: | South African Journal of Science, Volume: 116, Issue: 11-12, Pages: 1-11, Published: DEC 2020 South African Journal of Science, Vol 116, Iss 11/12 (2020) |
| ISSN: | 1996-7489 |
| DOI: | 10.17159/sajs.2020/8608 |
| Popis: | Fusarium wilt, caused by the soil-borne fungus Fusarium oxysporum f. sp. cubense (Foc), poses a major threat to banana production globally. A variant of Foc that originated in Southeast Asia, called tropical race 4 (TR4), was detected on a Cavendish banana export plantation (Metocheria) in northern Mozambique in 2013. Foc TR4 was rapidly disseminated on the farm, and affected approximately half a million plants within 3 years. The fungus was also detected on a second commercial property approximately 200 km away (Lurio farm) a year later, and on a small-grower’s property near Metocheria farm in 2015. Surveys in Mozambique showed that non-Cavendish banana varieties were only affected by Foc race 1 and race 2 strains. The testing of Cavendish banana somaclones in northern Mozambique revealed that GCTCV-119 was most resistant to Foc TR4, but that GCTCV-218 produced better bunches. The occurrence of Foc TR4 in northern Mozambique poses a potential threat to food security on the African continent, where banana is considered a staple food and source of income to millions of people. Cavendish somaclones can be used, in combination with integrated disease management practices, to replace susceptible Cavendish cultivars in southern Africa. The comprehensive testing of African cooking bananas for resistance to Foc TR4 is required, along with the improvement of biosecurity and preparedness of growers on the African continent. Significance: This paper presents the first official report of the invasive pest Foc TR4 in Africa. The spread of Foc TR4 on Cavendish banana farms in Mozambique was documented. Banana varieties that could replace susceptible Cavendish bananas were identified. |
| Databáze: | OpenAIRE |
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