Colombian datura virus
The Colombian datura virus (CDV) was detected in Brugmansia sp. plants in New South Wales in 2007. Subsequent surveillance of Brugmansia plants in Victoria in 2007 detected the virus in a nursery in a variegated species.
The distribution of this virus in Australia is still unclear as affected plants may be asymptomatic, which makes the detection and spread potential difficult to predict. It's also unclear what effect this virus may have on other crops in Australia.
Symptoms of CDV
Symptoms of CDV can include:
- reduction in leaf size
- vein banding
- chlorotic flecking on leaves followed by mottling
- plant stunting.
Infection can be symptomless, but if plants are stressed, leaf mottling and mosaic patterns will become evident.
- angles trumpets Brugmansia species
- terrestrial orchids (Spiranthes cernua)
- gold finger Juanulloa aurantiaca
- Petunia hybrida
- glasshouse tomatoes (Lycopersicon esculentum)
- tobacco (Nicotiana tabacum)
- cape gooseberry (Physalis peruviana)
- pepino (Solanum muricatum)
Spread of virus
The virus is transmitted by:
- a vector (aphid nonpersistent transmission by Myzus persicae [order Hemiptera])
- mechanical inoculation
CDV in other countries
In 1996, CDV was detected in about 300 plants of tomato variety Cabrion in one greenhouse in the Netherlands. Evidence was obtained that the tomato plants were infected by Myzus persicae that acquired the virus from a CDV-infected Brugmansia plant in the same greenhouse (Verhoeven 1996).
In Hungary, CDV has been found to infect angel trumpets (Brugmansia spp.) frequently and cape gooseberry (Physalis peruviana) and pepino (Solanum muricatum) sporadically. The symptoms persist or disappear soon after infection (Salamon 2005).
The virus known to occur in:
- United States of America
Figure 1 courtesy of Dr Rajarshi Kumar Gaur
Figure 2 courtesy of Scott Adkins, USDA-ARS
Figure 3 courtesy of Scott Adkins, USDA-ARS
Chellemi DO, Webster CG, Baker CA, Annamalai M, Achor D, Adkins S (2011) Widespread Occurrence and Low Genetic Diversity of Colombian datura virus in Brugmansia Suggest an Anthropogenic Role in Virus Selection and Spread. Plant Disease. May 2011 755-761. https://apsjournals.apsnet.org/doi/pdf/10.1094/PDIS-09-10-0654.
Kumar Verma R, Mishra R, Gaur RK, 2014. First Report of Colombian datura virus in India. New Disease Reports 30, 29. http://dx.doi.org/10.5197/j.2044-0588.2014.030.029
Salamon, P. 2005. Occurrence of Colombian datura virus in Brugmansia hybrids, Physalis peruviana L. and Solanum muricatum Ait in Hungary. Acta Virol. 2005; 49:11722 16047739.
Verhoeven, J. 1996. First report of Colombian Datura potyvirus in tomato. European Journal of Plant Pathology, Volume 182, pgs: 895898.