Login | Create Account (DAF staff only)

Host specificity of Puccinia spegazzinii (Pucciniales: pucciniaceae), a biological control agent for Mikania micrantha (Asteraceae) in Australia

Day, M. D. and Riding, N. (2018) Host specificity of Puccinia spegazzinii (Pucciniales: pucciniaceae), a biological control agent for Mikania micrantha (Asteraceae) in Australia. Biocontrol Science and Technology, 29 (1). pp. 19-27. ISSN 09583157

Full text not currently attached. Access may be available via the Publisher's website or OpenAccess link.

Article Link(s): https://doi.org/10.1080/09583157.2018.1520807

Abstract

The biology and host specificity of the rust fungus Puccinia spegazzinii, a biological control agent for Mikania micrantha, was studied in a quarantine laboratory in Brisbane, Australia. Nineteen plant species, all from the family Asteraceae were inoculated during host specificity trials. Spore formation occurred only on M. micrantha and no other plant was infected. The first signs of infection (white spots on leaves, petioles and stems) occurred 7 days after exposure to inoculum, becoming yellow by day 11. Mature pustules containing teliospores had developed by 20 days. Results obtained here support testing in other countries showing that P. spegazzinii is host specific to M. micrantha and no that other plant in Australia would be at risk if it were to be released in the environment. Recommendations on assessing pathogens to improve trials were proposed. Counting infected plants, plant parts and pustules formed can demonstrate that all test plants would have been adequately exposed to inoculum and thus increase the confidence in host specificity of pathogens in weed biological control. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.

Item Type:Article
Business groups:Biosecurity Queensland
Keywords:infection rates Inoculation techniques pustule development
Subjects:Science > Invasive Species > Plants > Biological control
Plant pests and diseases
Plant pests and diseases > Plant pathology
Deposited On:17 Jan 2019 02:35
Last Modified:20 May 2019 01:03

Repository Staff Only: item control page