New Zealand Plant Protection 64 (2011): 289
Cook's scurvy grass (Lepidium oleraceum agg.) is an endangered species of native Brassicaceae that is considered threatened by extinction. Virus-like disease symptoms were observed in a newly introduced plant of L. oleraceum at Stony Bay, Banks Peninsula, Canterbury, New Zealand, in 2008. Turnip mosaic virus (TuMV) was subsequently confirmed as the cause of symptoms. A survey was undertaken at seven isolated South Island sites where L. oleraceum and other Lepidium species were growing. TuMV was detected in around 20% of plants at two sites. Cauliflower mosaic virus (CaMV) was also detected at three sites with up to 50% incidence at one site and there was some evidence of a Beet western yellows virus (BWYV) infection. Further isolates of TuMV were also collected from commercial brassica crops in the South Island. RT PCR products for all of the virus-infected plant material were sequenced, analysed phylogenetically and compared. This poster reports on survey results and the comparative phylogenetic analysis of the TuMV isolates.
Copyright © 2011 New Zealand Plant Protection Society (Inc.).