Abstract
Maize dwarf mosaic virus (MDMV) is a serious maize pathogen, epidemic worldwide, and one of the most common virus diseases for monocotyledonous plants, causing up to 70% loss in corn yield globally since 1960. MDMV belongs to the genus Potyvirus (Potyviridae) and was first identified in 1964 in Illinois in corn and Johnsongrass. MDMV is a single stranded positive sense RNA virus and is transmitted in a non-persistent manner by several aphid species. MDMV is amongst the most important virus diseases in maize worldwide. This review will discuss its genome, transmission, symptomatology, diagnosis and management. Particular emphasis will be given to the current state of knowledge on the diagnosis and control of MDMV, due to its importance in reducing the impact of maize dwarf mosaic disease, to produce an enhanced quality and quantity of maize.
Highlights
Maize (Zea mays L.) is one of the most highly cultivated crops worldwide
A previous study by Giolitti et al [19] reported that the virus infecting maize fields in Chile is closely related to Maize dwarf mosaic virus (MDMV) isolate from Argentina (MDMV-Arg), since RT-polymerase chain reaction (PCR) conducted on those infected maize sample from Chile using primers designated for the gene MDMV-Arg capsid protein yielded only one band of the size, as expected
Detailed studies conducted on the genome and symptomatology of MDMV have resulted in successful visual, serological, as well as molecular, tests of diagnosis
Summary
Maize (Zea mays L.) is one of the most highly cultivated crops worldwide. It is the third largest crop grown in the developing world and it has been identified as a major staple food in Africa [1]. More than 50 viruses have been shown to infect maize [5]. Among all the maize-infecting viruses, Maize dwarf mosaic virus (MDMV) is the most common disease agent in this monocotyledonous crop globally [10], with incidences of maize dwarf mosaic (MDM) disease reported in Africa, United States, Asia and Europe [11]. Taking into account the economic significance of the disease, our current review has discussed available information from genome to global management of MDMV, so that greater effort would be put towards further research work in controlling MDM disease for the maintenance of profitable production and the good health of maize crops in future
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