Begomoviruses in Nigeria

Chapter

Abstract

The family Geminiviridae primarily constitutes an important family of circular single-stranded DNA (ssDNA) plant-infecting viruses, which pose severe constraints in agricultural production globally and serious threat to food security in sub-Saharan Africa. There are seven known genera, Mastrevirus, Begomovirus, Curtovirus, Becurtovirus, Eragrovirus, and Turncurtovirus of viruses belonging to the family Geminiviridae. Of these, the best characterized economically important species belong to the genus Begomovirus. Begomovirus species are either monopartite (possessing only DNA-A) or bipartite (having both DNA-A and DNA-B components). Majority of the monopartite begomoviruses also have subviral ssDNA satellite components, called DNA α or DNA β. In some cases, defective interfering DNAs can be found in the helper virus due to deletions of some genomic parts associated with bipartite and monopartite begomoviruses. New begomoviral species and their associated subviral components continue to emerge globally, thereby, constituting a formidable challenge to the profitable production of vegetables and other crops. Key begomoviruses associated with major crops in Nigeria are documented in this review.

Keywords

Geminiviridae Begomovirus Crops Diversity Nigeria 

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© Springer Nature Singapore Pte Ltd. 2017

Authors and Affiliations

  1. 1.Institute for Agricultural ResearchAhmadu Bello UniversityZariaNigeria

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