Surveillance and diagnostics of the emergent Sri Lankan cassava mosaic virus (Fam. Geminiviridae) in Southeast Asia

Wanwisa Siriwan,Jenyfer Jimenez,Nuannapa Hemniam,Kingkan Saokham,Diana Lopez-Alvarez,Ana M Leiva,Andres Martinez,Leroy Mwanzia,Luis A Becerra Lopez-Lavalle,Wilmer J Cuellar

doi:10.1016/j.virusres.2020.197959

Wanwisa Siriwan, Jenyfer Jimenez + Show 8 more

Open Access

https://doi.org/10.1016/j.virusres.2020.197959

Copy DOI

Abstract

Emergent agricultural pathogens cause severe damage worldwide and their invasive potential is significantly increased by global trade, crop intensification and climate change. Standard surveillance and diagnostic protocols need to be evaluated and implemented, particularly with diseases caused by a wide range of pathogens that induce similar symptoms. Such is the case with Cassava Mosaic Disease (CMD) present in Africa and Asia, and associated with mixed virus infections and recombinant and re-assorted virus strains. CMD has been recently reported in Southeast Asia (SEA) and is already widely spread throughout this region. This communication offers an update on protocols and tools used to track the distribution of CMD and to characterize the pathogen associated with it in SEA.

Highlights

Emergent agricultural pathogens cause severe damage worldwide and their invasive potential is significantly increased by global trade, crop intensification and climate change
The only virus species found in Cassava Mosaic Disease (CMD)-affected samples from Southeast Asia (SEA) is the Sri Lankan cassava mosaic virus (SLCMV), a geminivirus, containing a bipartite circular ssDNA genome, distinct from its counterparts from Africa (Fig. 1B)
SLCMV was first reported in Colombo, Sri Lanka (Saunders et al, 2002) and in India, where it coexists with Indian cassava mosaic virus (ICMV; Patil et al, 2005), another species of geminivirus causing CMD in southern India

Summary

Surveillance and diagnostics of the emergent Sri Lankan cassava mosaic

A Kasetsart University, Bangkok, Thailand b Virology Laboratory, International Center for Tropical Agriculture (CIAT), Cali, Colombia c Center for Agricultural Biotechnology, Kasetsart University, Kamphaeng Saen Campus, Nakhon Pathom, 73140, Thailand d Center of Excellence on Agricultural Biotechnology: (AG-BIO/PERDO-CHE), Bangkok, 10900, Thailand e Data Management Group, International Center for Tropical Agriculture (CIAT), Cali, Colombia f Cassava Genetics Laboratory, International Center for Tropical Agriculture (CIAT), Cali, Colombia

Field no GPS

Findings

Credit author statement