Onion yellow dwarf virus

Family   : Potyviridae
Genus    : Potyvirus
Acronym  : OYDV

Introduction

Onion yellow dwarf virus is the major viral pathogen of onion and garlic crop and reported to occur world wide. It is transmitted by aphids and produces symptoms of mild chlorotic stripes to bright yellow stripes depending on the virus strain and cultivar.

Major Diseases

Yellowing dwarf disease.

Geographical Distribution

Delhi, Hariyana, Rajasthan, Uttar Pradesh and Maharashtra and in sorthern parts of India.

Particle Morphology

Flexuous filamentous particles ranging from 650-900 nm.

Transmission Method

Transmitted by a vector; Myzus persicae and several other species of aphids in a non-persistent manner. Virus transmitted by mechanical inoculation; not transmitted by contact between plants; not transmitted by seed.

Detection

ELISA and PCR

Host Range and Symptomatology ShowHide

Host	Symptoms
Allium Sativum (Garlic)	Mild chlorotic stripes to bright yellow stripes followed by stunting.
Allium cepa (Onion)	Leaf striping and curling, stunting ("yellow dwarf").

References ShowHide

1	Onion yellow dwarf virus. [Distribution map].. 1984, Distribution Maps of Plant Diseases, April (Edition 5), pp Map 46.
2	Ahlawat, Y. S. ; Anupam Varma, Serological detection of a mixed viral infection in onion seed crop and possible measures for its management.. 1997, Indian Phytopathology, 50, 1, pp 137-140.
3	Gawande, S. J. ; Chimote, K. P. ; Gurav, V. S. ; Jai Gopal, Distribution and natural incidence of Onion Yellow Dwarf virus (OYDV) on garlic and its related Allium species in India.. 2013, Indian Journal of Horticulture, 70, 4, pp 544-548.
4	Gupta, R. P. ; Pandey, U. B., Viral/mycoplasmal diseases of onion in India.. 1986, Indian Journal of Virology, 2, 1, pp 111-113.
5	Hoa, N. V. ; Ahlawat, Y. S. ; Pant, R. P., Partial characterization of onion yellow dwarf virus from onion in India.. 2003, Indian Phytopathology, 56, 3, pp 276-282.
6	Lakra, B. S., Assessment of losses due to onion yellow dwarf virus in onion seed crop.. 2002, Indian Journal of Plant Protection, 30, 1, pp 37-38.
7	Majumder, S. ; Baranwal, V. K., Simultaneous detection of four garlic viruses by multiplex reverse transcription PCR and their distribution in Indian garlic accessions.. 2014, Journal of Virological Methods, 202, 1, pp 34-38.
8	Pawan Kumar ; Poonam Dhawan ; Rakesh Mehra, Symptoms and losses caused by onion yellow dwarf virus and iris yellow spot virus diseases of onion crop in Northern India.. 2012, Journal of Mycology and Plant Pathology, 42, 1, pp 153-160.
9	Sandeep Kumar ; Baranwal, V. K. ; Subodh Joshi ; Meenakshi Arya ; Majumder, S., Simultaneous detection of mixed infection of Onion yellow dwarf virus and an Allexivirus in RT-PCR for ensuring virus free onion bulbs.. 2010, Indian Journal of Virology, 21, 1, pp 64-68.
10	Verma, R. K. ; Ritesh Mishra ; Petrov, N. M. ; Stoyanova, M. ; Stoev, A. ; Bakardjieva, N. ; Gaur, R. K., Molecular characterization and recombination analysis of an Indian isolate of Onion yellow dwarf virus.. 2015, European Journal of Plant Pathology, 143, 3, pp 437-445.

Sequences ShowHide