Arabis mosaic virus inCyphomandra betaceaeSendt.

Abstract

Arabis mosaic virus (AMY) , in association with its vector Xiphinema diversicaudatum, is recorded for the first time in New Zealand.It was found occurring naturally on tamarillos (tree tomatoes) and was transferred experimentally to produce symptoms on Buttercup squash, cowpea, cucumber, french bean, lupin, Petunia, soybean, and tobacco. AMY was also transmitted to celery, coriander, pea, and sweet pea, but produced no symptoms in these hosts.No nematode or seed transmission experiments were attempted. Surveys showed the nematode vector to be present in only small numbers but regularly associated with tamarillo plants infected with AMY.The host range, physical properties, serology, and electron microscopy of the virus suggest that it is a strain of arabis mosaic virus.

Nematode vectors of plant viruses in New Zealand

“…Hay & Close (1992) found X. diversicaudatum in hop gardens infected with Arabis Mosaic Virus (AMV) at Riwaka and suggested that this species is a vector in New Zealand. At Te Puke this species has also been found regularly associated with tamarillo plants (Cyphomandra betacea) infected with AMV (Thomas & Procter 1972). Under experimental conditions, a New Zealand population of X. diversicaudatum transmitted two serologically distinct strains of AMV as efficiently as did populations of various European origins (Brown et al 1988).…”

“…Since then, several new Longidorus and Trichodorus species have been described (Clark 1963b, c;Yeates 1967) and new finds recorded (Dale 1971(Dale , 1972Thomas & Procter 1972;Yeates 1973;Yeates & Prestidge 1986;Grandison 1991;Hay & Close 1992).…”

New plant disease records in New Zealand: Arabis mosaic virus in celery, lettuce, and Chinese cabbage; tomato spotted wilt virus in celery

“…& Zucco (Forster & Milne 1975). and tamarillo (Thomas & Procter 1972). In all instances where ArMV has now been recorded, the infection was restricted to isolated properties or could be traced to .…”

Detection of nepoviruses ofVitis viniferain New Zealand using enzyme-linked immunosorbent assay (ELISA)

“…Enzyme-linked immunosorbent assay (ELISA; Voller et al 197 4) was used in the present study to detect GFV, arabis mosaic (ArMY) and tobacco ringspot (TobRV) viruses. ArMY and TobRV are commonly detected in grapevines overseas, (Martelli 1980) but although these 2 nepoviruses occur in New Zealand (Thomas & Procter 1972, 1973, they had not been detected in New Zealand grapevines.…”