Possible origin of ratoon stunting disease following interspecific hybridization of Saccharum species

Young, A. J. (2016) Possible origin of ratoon stunting disease following interspecific hybridization of Saccharum species. Plant Pathology, 65 (9). pp. 1403-1410. ISSN 0032-0862


Ratoon stunting disease (RSD) is the most economically significant disease of sugarcane, and, although it was first discovered in 1945, surprisingly little is understood of the nature of the relationship between the host and the pathogen, Leifsonia xyli subsp. xyli. This review traces RSD to the release of modern commercial hybrids, and provides evidence that Saccharum officinarum, the major progenitor of modern sugarcane cultivars, is not the natural host for L. xyli subsp. xyli. Rather, it is proposed that the wild relative, S. spontaneum, is more likely to be the original host, and that L. xyli subsp. xyli was acquired during interspecific hybridization work undertaken in Java during the 1920s. The release of the universally adopted variety POJ2878 then facilitated the dissemination of a single, worldwide clone of L. xyli subsp. xyli. The implications of the hypothesis are discussed in relation to plant improvement and the potential for new diseases to emerge through further attempts at broadening the genetic base of commercial sugarcane.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Agricultural, Computational and Environmental Sciences
Date Deposited: 24 Feb 2017 03:36
Last Modified: 01 Mar 2017 05:31
Uncontrolled Keywords: epidemiology, plant–bacterium interaction, RSD
Fields of Research : 07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070308 Crop and Pasture Protection (Pests, Diseases and Weeds)
Socio-Economic Objective: D Environment > 96 Environment > 9604 Control of Pests, Diseases and Exotic Species > 960413 Control of Plant Pests, Diseases and Exotic Species in Farmland, Arable Cropland and Permanent Cropland Environments
Identification Number or DOI: 10.1111/ppa.12545
URI: http://eprints.usq.edu.au/id/eprint/30682

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