Emerging potato pathogens affecting food security in southern Africa: Recent research
Potato is a staple crop that contributes to food security and poverty alleviation in developing nations. Despite this, yields in developing nations are often unsustainably low, due to various biotic and abiotic factors that negatively affect production. Some of the most important biotic constraints...
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| Format: | Article |
| Language: | English |
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Academy of Science of South Africa
2020-11-01
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| Series: | South African Journal of Science |
| Subjects: | |
| Online Access: | https://www.sajs.co.za/article/view/8055 |
| _version_ | 1818885714356469760 |
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| author | Jacquie E. van der Waals Kerstin Krüger |
| author_facet | Jacquie E. van der Waals Kerstin Krüger |
| author_sort | Jacquie E. van der Waals |
| collection | DOAJ |
| description | Potato is a staple crop that contributes to food security and poverty alleviation in developing nations. Despite this, yields in developing nations are often unsustainably low, due to various biotic and abiotic factors that negatively affect production. Some of the most important biotic constraints are pathogens, many of which are disseminated by seed tubers. The lack of functional or formal seed certification systems in many southern African countries results in a continual increase in pathogen pressure. Short rotation cycles, poor plant nutrition and inefficient control measures exacerbate the crop production challenges faced by resource poor growers. In this review, we discuss five of the most important diseases on potatoes in southern Africa, namely late blight, bacterial wilt, soft rot / blackleg, powdery scab and zebra chip. Management options for small-scale growers are provided.
Significance:
• Potato production in southern Africa is threatened by tuber-borne pathogens.
• Establishment and implementation of seed certification systems in southern African countries will increase potato yields and subsequently contribute to food security.
• Late blight, bacterial wilt, soft rot / blackleg and powdery scab are important emerging diseases on potatoes in southern Africa.
• Improved understanding of the biology of pathogens and the epidemiology of diseases will contributeto the management thereof. |
| first_indexed | 2024-12-19T16:09:50Z |
| format | Article |
| id | doaj.art-61aa27d5135748acbe31bf46dcaa47d8 |
| institution | Directory Open Access Journal |
| issn | 1996-7489 |
| language | English |
| last_indexed | 2024-12-19T16:09:50Z |
| publishDate | 2020-11-01 |
| publisher | Academy of Science of South Africa |
| record_format | Article |
| series | South African Journal of Science |
| spelling | doaj.art-61aa27d5135748acbe31bf46dcaa47d82022-12-21T20:14:46ZengAcademy of Science of South AfricaSouth African Journal of Science1996-74892020-11-0111611/1210.17159/sajs.2020/8055Emerging potato pathogens affecting food security in southern Africa: Recent researchJacquie E. van der Waals0Kerstin Krüger11.Department of Plant and Soil Sciences, University of Pretoria, Pretoria, South Africa; 2.Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria, South Africa1.Department of Zoology and Entomology, University of Pretoria, Pretoria, South Africa; 2.Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria, South AfricaPotato is a staple crop that contributes to food security and poverty alleviation in developing nations. Despite this, yields in developing nations are often unsustainably low, due to various biotic and abiotic factors that negatively affect production. Some of the most important biotic constraints are pathogens, many of which are disseminated by seed tubers. The lack of functional or formal seed certification systems in many southern African countries results in a continual increase in pathogen pressure. Short rotation cycles, poor plant nutrition and inefficient control measures exacerbate the crop production challenges faced by resource poor growers. In this review, we discuss five of the most important diseases on potatoes in southern Africa, namely late blight, bacterial wilt, soft rot / blackleg, powdery scab and zebra chip. Management options for small-scale growers are provided. Significance: • Potato production in southern Africa is threatened by tuber-borne pathogens. • Establishment and implementation of seed certification systems in southern African countries will increase potato yields and subsequently contribute to food security. • Late blight, bacterial wilt, soft rot / blackleg and powdery scab are important emerging diseases on potatoes in southern Africa. • Improved understanding of the biology of pathogens and the epidemiology of diseases will contributeto the management thereof.https://www.sajs.co.za/article/view/8055potatolate blightbacterial wiltsoft rotpowdery scab |
| spellingShingle | Jacquie E. van der Waals Kerstin Krüger Emerging potato pathogens affecting food security in southern Africa: Recent research South African Journal of Science potato late blight bacterial wilt soft rot powdery scab |
| title | Emerging potato pathogens affecting food security in southern Africa: Recent research |
| title_full | Emerging potato pathogens affecting food security in southern Africa: Recent research |
| title_fullStr | Emerging potato pathogens affecting food security in southern Africa: Recent research |
| title_full_unstemmed | Emerging potato pathogens affecting food security in southern Africa: Recent research |
| title_short | Emerging potato pathogens affecting food security in southern Africa: Recent research |
| title_sort | emerging potato pathogens affecting food security in southern africa recent research |
| topic | potato late blight bacterial wilt soft rot powdery scab |
| url | https://www.sajs.co.za/article/view/8055 |
| work_keys_str_mv | AT jacquieevanderwaals emergingpotatopathogensaffectingfoodsecurityinsouthernafricarecentresearch AT kerstinkruger emergingpotatopathogensaffectingfoodsecurityinsouthernafricarecentresearch |