Molecular characterization and detection of recombinant isolates of potato virus Y from China

Molecular characterization and detection of recombinant isolates of potato virus Y from China Although potato virus Y (PVY) is one of the most economically important pathogens of potatoes in China, few studies have been carried out to characterize the virus in that country. Using reverse transcription-polymerase chain reaction (RT-PCR)-based genotyping developed previously, two types of recombinant PVY were identified in China for the first time. One resembled the European (Eu) type of potato tuber necrosis strain (Eu-PVY NTN ), possessing three widely recognized recombinant joints (RJs 1–3) of the common strain (PVY O ) and the Eu- type tobacco veinal necrosis strain (Eu-PVY N ). The other, on the other hand, appeared to have only RJ1 and RJ2. The complete genome of a representative isolate, PVY-HN2, from the second type was subsequently sequenced. Comparison of the sequence of ‘HN2’ with those of PVY O and Eu-PVY N not only confirmed the recombinant nature of ‘HN2’ but also revealed the existence of three recombinant events in the isolate, similar to that in PVY NTN -Hun. However, the two isolates differed significantly at RJ1 (PVY NTN -Hun vs. HN2, nt 2419 vs. nt 2521) and RJ3 (PVY NTN -Hun vs. HN2, nt 9183 vs. nt 8572) and slightly at RJ2 (PVY NTN -Hun vs. HN2, nt 5844 vs. nt 5867). A primer pair was developed to facilitate the detection of the alternative RJ3. Using the newly and previously designed RJ primers, all targeted RJs were detected. Interestingly, tests of the available PVY samples indicated that two were doubly infected with both types of recombinant PVY, further confirming the effectiveness of the detection. Further analysis of these samples using enzyme-linked immunosorbent assay and bioassay revealed that ‘HN2’ possesses a PVY O serotype, a PVY N pathotype in tobacco and a PVY NTN pathotype in potato. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Molecular characterization and detection of recombinant isolates of potato virus Y from China

Loading next page...
 
/lp/springer-journals/molecular-characterization-and-detection-of-recombinant-isolates-of-se0JDF3obH
Publisher
Springer Vienna
Copyright
Copyright © 2009 by Springer-Verlag
Subject
Biomedicine; Infectious Diseases; Medical Microbiology ; Virology
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-009-0448-z
Publisher site
See Article on Publisher Site

Abstract

Although potato virus Y (PVY) is one of the most economically important pathogens of potatoes in China, few studies have been carried out to characterize the virus in that country. Using reverse transcription-polymerase chain reaction (RT-PCR)-based genotyping developed previously, two types of recombinant PVY were identified in China for the first time. One resembled the European (Eu) type of potato tuber necrosis strain (Eu-PVY NTN ), possessing three widely recognized recombinant joints (RJs 1–3) of the common strain (PVY O ) and the Eu- type tobacco veinal necrosis strain (Eu-PVY N ). The other, on the other hand, appeared to have only RJ1 and RJ2. The complete genome of a representative isolate, PVY-HN2, from the second type was subsequently sequenced. Comparison of the sequence of ‘HN2’ with those of PVY O and Eu-PVY N not only confirmed the recombinant nature of ‘HN2’ but also revealed the existence of three recombinant events in the isolate, similar to that in PVY NTN -Hun. However, the two isolates differed significantly at RJ1 (PVY NTN -Hun vs. HN2, nt 2419 vs. nt 2521) and RJ3 (PVY NTN -Hun vs. HN2, nt 9183 vs. nt 8572) and slightly at RJ2 (PVY NTN -Hun vs. HN2, nt 5844 vs. nt 5867). A primer pair was developed to facilitate the detection of the alternative RJ3. Using the newly and previously designed RJ primers, all targeted RJs were detected. Interestingly, tests of the available PVY samples indicated that two were doubly infected with both types of recombinant PVY, further confirming the effectiveness of the detection. Further analysis of these samples using enzyme-linked immunosorbent assay and bioassay revealed that ‘HN2’ possesses a PVY O serotype, a PVY N pathotype in tobacco and a PVY NTN pathotype in potato.

Journal

Archives of VirologySpringer Journals

Published: Aug 1, 2009

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off