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    Author(s): Rodrigo Neves Graca; Amy Ross-Davis; Ned KlopfensteinMee Sook Kim; Tobin Peever; Phil Cannon; Janice Uchida; Acelino Couto Alfenas
    Date: 2011
    Source: BMC Proceedings. 5(Suppl 7): P14.
    Publication Series: Scientific Journal (JRNL)
    Station: Rocky Mountain Research Station
    PDF: Download Publication  (178.21 KB)

    Description

    Puccinia psidii causes rust disease on many host species in the Myrtaceae [1]. First reported in 1884 on guava in Southern Brazil [2], the rust has since been detected on several myrtaceous in South America, Central America, Caribbean, Mexico, USA: in Florida, California, and Hawaii. More recently, P. psidii was reported in Japan infecting M. polymorpha[3]. Of special note is that a rust was found infecting Myrtaceae species in Australia, where the fungus was reported as Uredo rangelii, based on the tonsure found on the urediniospores surface. However, DNA sequence data did not differentiate that rust from P. psidii[4], and the same tonsure patch, was also observed on rust urediniospores collected from several host species in Brazil [unpublished data].We have hypothesed that P. psidii was introduced into Hawaii through California by trade of rust infected myrtaceous plants, and that P. psidii populations from South America are distinct from the rust populations that became estabilished in California and Hawaii.

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    Citation

    Graca, Rodrigo Neves; Ross-Davis, Amy; Klopfenstein, Ned; Kim, Mee Sook; Peever, Tobin; Cannon, Phil; Uchida, Janice; Alfenas, Acelino Couto. 2011. Tracking down worldwide Puccinia psidii dispersal. BMC Proceedings. 5(Suppl 7): P14.

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    Keywords

    Puccinia psidii, rust disease

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