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The Verticillium wilt problem in Australian cotton

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Abstract

Verticillium dahliae is a soil-borne phytopathogen and the causal agent of Verticillium wilt. It affects many agriculturally important crops around the world, including cotton. In Australia, the billion-dollar cotton industry is increasingly impacted by Verticillium wilt. Internationally it has been reported that the defoliating V. dahliae Vegetative Compatibility Group (VCG) 1A causes severe damage to cotton. In Australia however, the non-defoliating VCG2A is causing more severe damage to crops in fields than the defoliating VCG1A. This review examines the current research to understand the Australian V. dahliae situation, including current classification systems, genetic analyses and management strategies. It appears that virulence cannot be defined solely by VCG in Australian Verticillium dahliae isolates causing disease in cotton, and that the industry must continually adapt their practices in order to keep the disease under control.

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Acknowledgements

This project is supported by funding from the Australian Government Department of Agriculture as part of its Rural R&D for Profit programme and the Cotton Research and Development Corporation. Rosalie Daniel and John Webster reviewed and improved an earlier version of this manuscript.

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Correspondence to Toni A. Chapman.

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Dadd-Daigle, P., Kirkby, K., Chowdhury, P.R. et al. The Verticillium wilt problem in Australian cotton. Australasian Plant Pathol. 50, 129–135 (2021). https://doi.org/10.1007/s13313-020-00756-y

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  • DOI: https://doi.org/10.1007/s13313-020-00756-y

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