Diversity of Dicotyledenous-Infecting Geminiviruses and Their Associated DNA Molecules in Southern Africa, Including the South-West Indian Ocean Islands
The family Geminiviridae comprises a group of plant-infecting circular ssDNA viruses that severely constrain agricultural production throughout the temperate regions of the world, and are a particularly serious threat to food security in sub-Saharan Africa. While geminiviruses exhibit considerable d...
| Main Authors: | , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2012-09-01
|
| Series: | Viruses |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1999-4915/4/9/1753 |
| _version_ | 1818011858441863168 |
|---|---|
| author | Lindy L. Esterhuizen Darren Martin Gerhard Pietersen Edward P. Rybicki Natasha Abraham Kenneth G. Mabasa Shaun Berry Nurbibi Cossa Valter N. Nuaila Marie E. C. Rey Maria Paximadis Joseph Ndunguru Leigh C. Berrie |
| author_facet | Lindy L. Esterhuizen Darren Martin Gerhard Pietersen Edward P. Rybicki Natasha Abraham Kenneth G. Mabasa Shaun Berry Nurbibi Cossa Valter N. Nuaila Marie E. C. Rey Maria Paximadis Joseph Ndunguru Leigh C. Berrie |
| author_sort | Lindy L. Esterhuizen |
| collection | DOAJ |
| description | The family Geminiviridae comprises a group of plant-infecting circular ssDNA viruses that severely constrain agricultural production throughout the temperate regions of the world, and are a particularly serious threat to food security in sub-Saharan Africa. While geminiviruses exhibit considerable diversity in terms of their nucleotide sequences, genome structures, host ranges and insect vectors, the best characterised and economically most important of these viruses are those in the genus Begomovirus. Whereas begomoviruses are generally considered to be either monopartite (one ssDNA component) or bipartite (two circular ssDNA components called DNA-A and DNA-B), many apparently monopartite begomoviruses are associated with additional subviral ssDNA satellite components, called alpha- (DNA-as) or betasatellites (DNA-βs). Additionally, subgenomic molecules, also known as defective interfering (DIs) DNAs that are usually derived from the parent helper virus through deletions of parts of its genome, are also associated with bipartite and monopartite begomoviruses. The past three decades have witnessed the emergence and diversification of various new begomoviral species and associated DI DNAs, in southern Africa, East Africa, and proximal Indian Ocean islands, which today threaten important vegetable and commercial crops such as, tobacco, cassava, tomato, sweet potato, and beans. This review aims to describe what is known about these viruses and their impacts on sustainable production in this sensitive region of the world. |
| first_indexed | 2024-04-14T06:12:53Z |
| format | Article |
| id | doaj.art-154c942c01cc4ae4a438dbb5366b8db5 |
| institution | Directory Open Access Journal |
| issn | 1999-4915 |
| language | English |
| last_indexed | 2024-04-14T06:12:53Z |
| publishDate | 2012-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Viruses |
| spelling | doaj.art-154c942c01cc4ae4a438dbb5366b8db52022-12-22T02:08:18ZengMDPI AGViruses1999-49152012-09-01491753179110.3390/v4091753Diversity of Dicotyledenous-Infecting Geminiviruses and Their Associated DNA Molecules in Southern Africa, Including the South-West Indian Ocean IslandsLindy L. EsterhuizenDarren MartinGerhard PietersenEdward P. RybickiNatasha AbrahamKenneth G. MabasaShaun BerryNurbibi CossaValter N. NuailaMarie E. C. ReyMaria PaximadisJoseph NdunguruLeigh C. BerrieThe family Geminiviridae comprises a group of plant-infecting circular ssDNA viruses that severely constrain agricultural production throughout the temperate regions of the world, and are a particularly serious threat to food security in sub-Saharan Africa. While geminiviruses exhibit considerable diversity in terms of their nucleotide sequences, genome structures, host ranges and insect vectors, the best characterised and economically most important of these viruses are those in the genus Begomovirus. Whereas begomoviruses are generally considered to be either monopartite (one ssDNA component) or bipartite (two circular ssDNA components called DNA-A and DNA-B), many apparently monopartite begomoviruses are associated with additional subviral ssDNA satellite components, called alpha- (DNA-as) or betasatellites (DNA-βs). Additionally, subgenomic molecules, also known as defective interfering (DIs) DNAs that are usually derived from the parent helper virus through deletions of parts of its genome, are also associated with bipartite and monopartite begomoviruses. The past three decades have witnessed the emergence and diversification of various new begomoviral species and associated DI DNAs, in southern Africa, East Africa, and proximal Indian Ocean islands, which today threaten important vegetable and commercial crops such as, tobacco, cassava, tomato, sweet potato, and beans. This review aims to describe what is known about these viruses and their impacts on sustainable production in this sensitive region of the world.http://www.mdpi.com/1999-4915/4/9/1753Geminivirusessweepovirusesdicotyledenous cropssouthern Africaeastern Africasouth-west Indian Oceansdiversityrecombination |
| spellingShingle | Lindy L. Esterhuizen Darren Martin Gerhard Pietersen Edward P. Rybicki Natasha Abraham Kenneth G. Mabasa Shaun Berry Nurbibi Cossa Valter N. Nuaila Marie E. C. Rey Maria Paximadis Joseph Ndunguru Leigh C. Berrie Diversity of Dicotyledenous-Infecting Geminiviruses and Their Associated DNA Molecules in Southern Africa, Including the South-West Indian Ocean Islands Viruses Geminiviruses sweepoviruses dicotyledenous crops southern Africa eastern Africa south-west Indian Oceans diversity recombination |
| title | Diversity of Dicotyledenous-Infecting Geminiviruses and Their Associated DNA Molecules in Southern Africa, Including the South-West Indian Ocean Islands |
| title_full | Diversity of Dicotyledenous-Infecting Geminiviruses and Their Associated DNA Molecules in Southern Africa, Including the South-West Indian Ocean Islands |
| title_fullStr | Diversity of Dicotyledenous-Infecting Geminiviruses and Their Associated DNA Molecules in Southern Africa, Including the South-West Indian Ocean Islands |
| title_full_unstemmed | Diversity of Dicotyledenous-Infecting Geminiviruses and Their Associated DNA Molecules in Southern Africa, Including the South-West Indian Ocean Islands |
| title_short | Diversity of Dicotyledenous-Infecting Geminiviruses and Their Associated DNA Molecules in Southern Africa, Including the South-West Indian Ocean Islands |
| title_sort | diversity of dicotyledenous infecting geminiviruses and their associated dna molecules in southern africa including the south west indian ocean islands |
| topic | Geminiviruses sweepoviruses dicotyledenous crops southern Africa eastern Africa south-west Indian Oceans diversity recombination |
| url | http://www.mdpi.com/1999-4915/4/9/1753 |
| work_keys_str_mv | AT lindylesterhuizen diversityofdicotyledenousinfectinggeminivirusesandtheirassociateddnamoleculesinsouthernafricaincludingthesouthwestindianoceanislands AT darrenmartin diversityofdicotyledenousinfectinggeminivirusesandtheirassociateddnamoleculesinsouthernafricaincludingthesouthwestindianoceanislands AT gerhardpietersen diversityofdicotyledenousinfectinggeminivirusesandtheirassociateddnamoleculesinsouthernafricaincludingthesouthwestindianoceanislands AT edwardprybicki diversityofdicotyledenousinfectinggeminivirusesandtheirassociateddnamoleculesinsouthernafricaincludingthesouthwestindianoceanislands AT natashaabraham diversityofdicotyledenousinfectinggeminivirusesandtheirassociateddnamoleculesinsouthernafricaincludingthesouthwestindianoceanislands AT kennethgmabasa diversityofdicotyledenousinfectinggeminivirusesandtheirassociateddnamoleculesinsouthernafricaincludingthesouthwestindianoceanislands AT shaunberry diversityofdicotyledenousinfectinggeminivirusesandtheirassociateddnamoleculesinsouthernafricaincludingthesouthwestindianoceanislands AT nurbibicossa diversityofdicotyledenousinfectinggeminivirusesandtheirassociateddnamoleculesinsouthernafricaincludingthesouthwestindianoceanislands AT valternnuaila diversityofdicotyledenousinfectinggeminivirusesandtheirassociateddnamoleculesinsouthernafricaincludingthesouthwestindianoceanislands AT marieecrey diversityofdicotyledenousinfectinggeminivirusesandtheirassociateddnamoleculesinsouthernafricaincludingthesouthwestindianoceanislands AT mariapaximadis diversityofdicotyledenousinfectinggeminivirusesandtheirassociateddnamoleculesinsouthernafricaincludingthesouthwestindianoceanislands AT josephndunguru diversityofdicotyledenousinfectinggeminivirusesandtheirassociateddnamoleculesinsouthernafricaincludingthesouthwestindianoceanislands AT leighcberrie diversityofdicotyledenousinfectinggeminivirusesandtheirassociateddnamoleculesinsouthernafricaincludingthesouthwestindianoceanislands |