Tomato leaf curl virus and Cotton leaf curl Multan betasatellite can cause mild transient symptoms in cotton
M. SaeedNational Institute for Biotechnology and Genetic Engineering, PO Box 577, Jhang Road, Faisalabad, Pakistan. Email: saeed_hafeez@yahoo.com; msaeed@nibge.org
Australasian Plant Disease Notes 5(1) 58-60 https://doi.org/10.1071/DN10021
Submitted: 13 January 2010 Accepted: 11 May 2010 Published: 7 June 2010
Abstract
Tomato leaf curl virus (ToLCV) from Australia is a monopartite begomovirus which is naturally associated with a DNA satellite, a vestigial betasatellite. Cotton leaf curl disease is caused by a complex consisting of one or more begomoviruses (eight species have been identified so far) associated with a single DNA β satellite named as Cotton leaf curl Multan betasatellite (CLCuMB). ToLCV and CLCuMB caused mild symptoms in cotton plants 18–21 days post-inoculation. The mild symptoms caused by ToLCV and CLCuMB in cotton plants began to diminish 6 weeks post-inoculation and completely disappeared 8–10 weeks post-inoculation, raising the possibility that ToLCV may lack some factor(s) essential for persistent systemic infection of cotton.
Acknowledgements
The author thanks Rob W. Briddon (Plant Biotechnology Division, NIBGE, Faisalabad, Pakistan) and John W. Randles (School of Agriculture, Food and Wine, University of Adelaide, Australia) for critically reading the manuscript. This project was funded by the Australian Centre for International Agricultural Research (ACIAR). M.S. thanks ACIAR and the Higher Education Commission HEC, Pakistan, for financial support.
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