Efficacy of indigenous arbuscular mycorrhizal fungi for promoting white yam (Dioscorea rotundata) growth in West Africa
Tuber yields of yam (Dioscorea spp.), a main staple food in West Africa, are steadily declining per unit area, an incidence for which decreasing soil fertility due to increasing land pressure is largely blamed. Recent studies demonstrated the association of a plethora of arbuscular mycorrhizal fungi...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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Elsevier
2010
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/89385 |
| _version_ | 1855542981306613760 |
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| author | Tchabi, A. Coyne, Danny L. Hountondji, F.C.C. Lawouin, L. Wiemken, A. Oehl, F. |
| author_browse | Coyne, Danny L. Hountondji, F.C.C. Lawouin, L. Oehl, F. Tchabi, A. Wiemken, A. |
| author_facet | Tchabi, A. Coyne, Danny L. Hountondji, F.C.C. Lawouin, L. Wiemken, A. Oehl, F. |
| author_sort | Tchabi, A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Tuber yields of yam (Dioscorea spp.), a main staple food in West Africa, are steadily declining per unit area, an incidence for which decreasing soil fertility due to increasing land pressure is largely blamed. Recent studies demonstrated the association of a plethora of arbuscular mycorrhizal fungi (AMF) with yam, soil microorganisms crucial for natural soil fertility. Thus, inoculation of yam with AMF could help reverse declining yields, above all in soils with a strong loss of AMF diversity due to agricultural land use intensification. In a pot experiment, we studied the impact of indigenous and exotic AMF isolates on growth performance of micro-propagated white yam plantlets (Dioscorea rotundata, cv.TDr89/02461). Pots were inoculated with single spore derived isolates of Glomus etunicatum, originating from tropical environments in West Africa, South America and Asia and, for comparison, also with three isolates of other AMF species from temperate Europe. In addition, isolates of nine AMF species originating from sub-Saharan West Africa and three commercial AMF were compared. Six of the 11 isolates of G. etunicatum from the tropics increased yam tuber growth compared with non-mycorrhizal controls, whereas the European AMF species tended to be less efficient but led to an increased tuber phosphorus concentration. The African isolates of G. mosseae, G. hoi, G. etunicatum, Acaulospora scrobiculata and A. spinosa generally led to increased tuber growth compared with non-mycorrhizal controls, while isolates of G. sinuosum and Kuklospora kentinensis did not. Our study indicates that inoculation of micro-propagated yam plantlets with selected indigenous AMF could potentially constitute a sustainable measure to boost yam productivity again in degraded African soils. |
| format | Journal Article |
| id | CGSpace89385 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2010 |
| publishDateRange | 2010 |
| publishDateSort | 2010 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace893852025-12-08T09:54:28Z Efficacy of indigenous arbuscular mycorrhizal fungi for promoting white yam (Dioscorea rotundata) growth in West Africa Tchabi, A. Coyne, Danny L. Hountondji, F.C.C. Lawouin, L. Wiemken, A. Oehl, F. soil microbiota biodiversity arbuscular mycorrhiza tubers sustainable agriculture Tuber yields of yam (Dioscorea spp.), a main staple food in West Africa, are steadily declining per unit area, an incidence for which decreasing soil fertility due to increasing land pressure is largely blamed. Recent studies demonstrated the association of a plethora of arbuscular mycorrhizal fungi (AMF) with yam, soil microorganisms crucial for natural soil fertility. Thus, inoculation of yam with AMF could help reverse declining yields, above all in soils with a strong loss of AMF diversity due to agricultural land use intensification. In a pot experiment, we studied the impact of indigenous and exotic AMF isolates on growth performance of micro-propagated white yam plantlets (Dioscorea rotundata, cv.TDr89/02461). Pots were inoculated with single spore derived isolates of Glomus etunicatum, originating from tropical environments in West Africa, South America and Asia and, for comparison, also with three isolates of other AMF species from temperate Europe. In addition, isolates of nine AMF species originating from sub-Saharan West Africa and three commercial AMF were compared. Six of the 11 isolates of G. etunicatum from the tropics increased yam tuber growth compared with non-mycorrhizal controls, whereas the European AMF species tended to be less efficient but led to an increased tuber phosphorus concentration. The African isolates of G. mosseae, G. hoi, G. etunicatum, Acaulospora scrobiculata and A. spinosa generally led to increased tuber growth compared with non-mycorrhizal controls, while isolates of G. sinuosum and Kuklospora kentinensis did not. Our study indicates that inoculation of micro-propagated yam plantlets with selected indigenous AMF could potentially constitute a sustainable measure to boost yam productivity again in degraded African soils. 2010-06 2017-11-14T08:07:52Z 2017-11-14T08:07:52Z Journal Article https://hdl.handle.net/10568/89385 en Limited Access Elsevier Tchabi, A., Coyne, D., Hountondji, F., Lawouin, L., Wiemken, A. & Oehl, F. (2010). Efficacy of indigenous arbuscular mycorrhizal fungi for promoting white yam (Dioscorea rotundata) growth in West Africa. Applied Soil Ecology, 45(2), 92-100. |
| spellingShingle | soil microbiota biodiversity arbuscular mycorrhiza tubers sustainable agriculture Tchabi, A. Coyne, Danny L. Hountondji, F.C.C. Lawouin, L. Wiemken, A. Oehl, F. Efficacy of indigenous arbuscular mycorrhizal fungi for promoting white yam (Dioscorea rotundata) growth in West Africa |
| title | Efficacy of indigenous arbuscular mycorrhizal fungi for promoting white yam (Dioscorea rotundata) growth in West Africa |
| title_full | Efficacy of indigenous arbuscular mycorrhizal fungi for promoting white yam (Dioscorea rotundata) growth in West Africa |
| title_fullStr | Efficacy of indigenous arbuscular mycorrhizal fungi for promoting white yam (Dioscorea rotundata) growth in West Africa |
| title_full_unstemmed | Efficacy of indigenous arbuscular mycorrhizal fungi for promoting white yam (Dioscorea rotundata) growth in West Africa |
| title_short | Efficacy of indigenous arbuscular mycorrhizal fungi for promoting white yam (Dioscorea rotundata) growth in West Africa |
| title_sort | efficacy of indigenous arbuscular mycorrhizal fungi for promoting white yam dioscorea rotundata growth in west africa |
| topic | soil microbiota biodiversity arbuscular mycorrhiza tubers sustainable agriculture |
| url | https://hdl.handle.net/10568/89385 |
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