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Type: Journal article
Title: Infection of Cullen australasicum (syn. Psoralea australasica) with Alfalfa mosaic virus
Author: Nair, R.
Habili, N.
Randles, J.
Citation: Australasian Plant Disease Notes, 2009; 4(1):46-48
Publisher: CSIRO Publishing
Issue Date: 2009
ISSN: 1833-928X
Statement of
R. M. Nair, N. Habili and J. W. Randles
Abstract: Severe yellow mosaic and leaf distortion symptoms have been observed on Cullen australasicum (cullen) plants growing in experimental plots at Urrbrae, South Australia. The incidence of the affected plants in a 2-year-old stand was ~80%. Symptom distribution on plants was uneven and symptom intensity appeared to vary between seasons. Alfalfa mosaic virus (AMV) was identified in 6/10 symptomatic and 1/10 asymptomatic field plants by reverse transcription-polymerase chain reaction (RT–PCR). Transmission of mosaic symptoms from cullen to cullen by mechanical inoculation was unsuccessful, but a cullen AMV isolate passaged through herbaceous indicators induced systemic mosaic in 1/4 of inoculated cullen seedlings. No seed transmission of AMV was observed in 50 seedlings raised from symptomatic parents. These results show that cullen is a host of AMV, but further studies are needed to determine whether AMV is the sole cause of the mosaic disease.
Rights: Copyright Australasian Plant Pathology Society 2009
DOI: 10.1071/DN09019
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Appears in Collections:Agriculture, Food and Wine publications
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