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Subject: First record of the cyst forming nematode, Afenestrata orientalis, in the United States
Date posted: November 09, 2005
Source: Florida Department of Agriculture and Consumer Services – Division of Plant Industry

A cyst forming nematode, Afenestrata orientalis Kazachenco, was found infecting the roots of the ornamental grass, Miscanthus sinensis ‘Zebrinus’, in Florida.  This is the first record of A. orientalis in Florida and the United States.   Afenestrata orientalis was described in 1990 on ornamental Miscanthus purepureus plants in far-east Russia.  Molecular profiling showed the populations in Florida and Russia were congruent.  At the same time of the Florida detection, a third matching population was identified in Guatemala infecting Miscanthus sinensis ‘Variegatus’ and Pennisetum setaceum ‘Rubrum’ plant roots.  The likely pathway of introduction is the movement of infected ornamental grasses in the nursery industry however, the economic importance, host range, and full distribution of this species is not yet known.


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