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Plantwise Pest Alert
Title First report of Beet western yellows virus infecting Crocus sativus in China.

Authors Zheng, H. Y.; Wu, X. Y.; Han, K. L.; Chen, Z. Q.; Song, X. J.; Peng, J. J.; Lu, Y. W.; Lin, L.; Chen, J. P.; Yan, F.; Wu, X. Y.; Han, K. L.

Author Affiliation State Key Laboratory Breeding Base for Sustainable Control of Plant Pest and Disease, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.

Journal Plant Disease 2018 Vol 102 No. 7 pp. 1471

ISSN 0191-2917


Abstract

Between January and March each year from 2014 to 2016, saffron (Crocus sativus) plants showing typical symptoms of a virus disease (yellow spots or stripes on the leaves, and yellow dwarfing symptoms with leaf tip death) were observed in Qingtian county, one of the main saffron-producing areas in Zhejiang Province, China. Negatively stained sap from two symptomatic saffron plants both had virions with the morphology and dimensions of potyvirus particles, and electron microscopy of thin sections revealed long flexuous inclusion bodies in the cytoplasm of infected cells. In addition, isometric virus particles with a diameter ∼25-30 nm could also be observed in both samples, and these were particularly conspicuous in phloem parenchyma cells, where they formed crystalline arrays. RT-PCR results showed that the saffron plants in Qingtian county were coinfected by Bean yellow mosaic virus (BYMV) and Beet western yellows virus (BWYV). BWYV has been reported to infect many dictotyledonous plants, including Beta vulgaris, Raphanus sativus and many common weed species. This is thought to be the first report of BWYV in C. sativus, or any other monocotyledonous plant.
Publication type
Journal article

Publisher
American Phytopathological Society (APS Press)

Year of publication
2018

Location of publication
St. Paul

Country of publication
USA

Language of publication
English

Language of summary
English

Geographical location
China
Zhejiang


Record number
20183233416

Organism descriptor
Bean yellow mosaic virus
Beet western yellows virus
Crocus sativus
fungi
Polerovirus
Potyviridae
Potyvirus


Descriptor
fungal diseases
hosts
morphology
new host records
pathogens
plant diseases
plant pathogens
polymerase chain reaction
saffron
symptoms


Identifier
Chekiang
fungus
PCR
People's Republic of China
phytopathogens


Broad Term
Potyvirus
Potyviridae
positive-sense ssRNA Viruses
ssRNA Viruses
RNA Viruses
viruses
Polerovirus
Luteoviridae
APEC countries
Developing Countries
East Asia
Asia
Crocus
Iridaceae
Asparagales
monocotyledons
angiosperms
Spermatophyta
plants
eukaryotes
Eastern China
China