Fusarium oxysporum V5w2 is a non-beneficial endophyte that interacts with Radopholus similis in a wilt disease complex of banana
Fusarium oxysporum V5w2 is a fungal agent, which was originally intended for biological control of the root pathogenic nematode Radopholus similis among other banana pests. Information on some of its actual effects on banana plants and pests has been scarce. A study was conducted to assess the effec...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2021-11-01
|
| Series: | Scientific African |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S246822762100315X |
| _version_ | 1818969022457184256 |
|---|---|
| author | Dennis M.W. Ochieno |
| author_facet | Dennis M.W. Ochieno |
| author_sort | Dennis M.W. Ochieno |
| collection | DOAJ |
| description | Fusarium oxysporum V5w2 is a fungal agent, which was originally intended for biological control of the root pathogenic nematode Radopholus similis among other banana pests. Information on some of its actual effects on banana plants and pests has been scarce. A study was conducted to assess the effects of F. oxysporum V5w2 and mulch on R. similis and banana plants in the field. The experiment was a 3-factor (2 × 2 × 2) complete randomized block design with or without F. oxysporum V5w2, R. similis or mulch. Root damage was higher when plants were inoculated with R. similis compared to non-inoculated plants, while plant height, leaf size, bunch size and banana yields were lower in R. similis-inoculated plants. Plant growth and bunch size were greater in mulched than in non-mulched plots, with banana yields on mulched plots increasing by 131% to reach 37 tonnes per hectare. F. oxysporum V5w2-inoculated plants were shorter, with fewer leaves that were smaller, and had shorter duration to harvest than non-inoculated ones. When R. similis-inoculated mulched plants received F. oxysporum V5w2 inoculum, plant toppling-over occurred less frequently compared to plants that were not inoculated with the fungus, probably because the plants were smaller in size during growth. The benefits of mulching in banana production were evident, while the claimed enhancing effect of inoculating tissue culture plants with F. oxysporum V5w2 as a biological control agent could not be verified. I conclude by suggesting that, the use of F. oxysporum V5w2 as a biological control agent of R. similis and other pests should be reconsidered, because this fungal strain has the potential of invading xylem vessels and becoming pathogenic to banana plants. |
| first_indexed | 2024-12-20T14:13:59Z |
| format | Article |
| id | doaj.art-0c0575f28e744408be94d240afe65dfa |
| institution | Directory Open Access Journal |
| issn | 2468-2276 |
| language | English |
| last_indexed | 2024-12-20T14:13:59Z |
| publishDate | 2021-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Scientific African |
| spelling | doaj.art-0c0575f28e744408be94d240afe65dfa2022-12-21T19:38:05ZengElsevierScientific African2468-22762021-11-0114e01014Fusarium oxysporum V5w2 is a non-beneficial endophyte that interacts with Radopholus similis in a wilt disease complex of bananaDennis M.W. Ochieno0Department of Biological Sciences, School of Natural Sciences, Masinde Muliro University of Science and Technology (MMUST), P.O. Box 190-50100, Kakamega, Kenya; Biodiversity and Ecosystem Services Section, Centre for African Medicinal and Nutritional Flora and Fauna (CAMNFF), Techno Park, Masinde Muliro University of Science and Technology (MMUST), P.O. Box 190-50100, Kakamega, KenyaFusarium oxysporum V5w2 is a fungal agent, which was originally intended for biological control of the root pathogenic nematode Radopholus similis among other banana pests. Information on some of its actual effects on banana plants and pests has been scarce. A study was conducted to assess the effects of F. oxysporum V5w2 and mulch on R. similis and banana plants in the field. The experiment was a 3-factor (2 × 2 × 2) complete randomized block design with or without F. oxysporum V5w2, R. similis or mulch. Root damage was higher when plants were inoculated with R. similis compared to non-inoculated plants, while plant height, leaf size, bunch size and banana yields were lower in R. similis-inoculated plants. Plant growth and bunch size were greater in mulched than in non-mulched plots, with banana yields on mulched plots increasing by 131% to reach 37 tonnes per hectare. F. oxysporum V5w2-inoculated plants were shorter, with fewer leaves that were smaller, and had shorter duration to harvest than non-inoculated ones. When R. similis-inoculated mulched plants received F. oxysporum V5w2 inoculum, plant toppling-over occurred less frequently compared to plants that were not inoculated with the fungus, probably because the plants were smaller in size during growth. The benefits of mulching in banana production were evident, while the claimed enhancing effect of inoculating tissue culture plants with F. oxysporum V5w2 as a biological control agent could not be verified. I conclude by suggesting that, the use of F. oxysporum V5w2 as a biological control agent of R. similis and other pests should be reconsidered, because this fungal strain has the potential of invading xylem vessels and becoming pathogenic to banana plants.http://www.sciencedirect.com/science/article/pii/S246822762100315XFusarium oxysporum V5w2Integrated Pest Management (IPM)Radopholus similisMulchingPlant-pathogenic fungiTissue culture banana |
| spellingShingle | Dennis M.W. Ochieno Fusarium oxysporum V5w2 is a non-beneficial endophyte that interacts with Radopholus similis in a wilt disease complex of banana Scientific African Fusarium oxysporum V5w2 Integrated Pest Management (IPM) Radopholus similis Mulching Plant-pathogenic fungi Tissue culture banana |
| title | Fusarium oxysporum V5w2 is a non-beneficial endophyte that interacts with Radopholus similis in a wilt disease complex of banana |
| title_full | Fusarium oxysporum V5w2 is a non-beneficial endophyte that interacts with Radopholus similis in a wilt disease complex of banana |
| title_fullStr | Fusarium oxysporum V5w2 is a non-beneficial endophyte that interacts with Radopholus similis in a wilt disease complex of banana |
| title_full_unstemmed | Fusarium oxysporum V5w2 is a non-beneficial endophyte that interacts with Radopholus similis in a wilt disease complex of banana |
| title_short | Fusarium oxysporum V5w2 is a non-beneficial endophyte that interacts with Radopholus similis in a wilt disease complex of banana |
| title_sort | fusarium oxysporum v5w2 is a non beneficial endophyte that interacts with radopholus similis in a wilt disease complex of banana |
| topic | Fusarium oxysporum V5w2 Integrated Pest Management (IPM) Radopholus similis Mulching Plant-pathogenic fungi Tissue culture banana |
| url | http://www.sciencedirect.com/science/article/pii/S246822762100315X |
| work_keys_str_mv | AT dennismwochieno fusariumoxysporumv5w2isanonbeneficialendophytethatinteractswithradopholussimilisinawiltdiseasecomplexofbanana |