Complete Nucleotide Sequence of Rice Tungro Spherical Virus Genome of a Highly Virulent Strain Vt6

Azzam, Osmat, Isogai, Masamichi, Cabauatan, Pepito Q., Masuta, Chikara, & Uyeda, Ichiro (2000) Complete Nucleotide Sequence of Rice Tungro Spherical Virus Genome of a Highly Virulent Strain Vt6. Virus Genes, 20(1), pp. 79-85.

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Abstract

The complete nucleotide sequence of rice tungro spherical virus (RTSV) strain Vt6, originally from Mindanao, the Philippines, with higher virulence to resistant rice cultivars, was determined and compared with the published sequence for the Philippine-type strain A (RTSV-A-Shen). It was reported that RTSV-A was not able to infect a rice resistant cultivar TKM 6 (10). RTSV-Vt6 and RTSV-A-Shen share 90% and 95% homology at nucleotide and amino-acid levels, respectively. The N-terminal leader sequence of RTSV-Vt6 contained a 39-amino acids-region (positions 65 to 103) which was totally different from that of RTSV-A-Shen; the difference resulted from frame shifting by nucleotide insertions and deletions. To confirm the amino-acid sequence differences of the leader polypeptide, the same region was cloned and sequenced using a newly obtained variant of RTSV-type 6, which had been collected in the field of IRRI, and seven field isolates from Mindanao, the Philippines. Since all the sequences of the target region are identical to that of the Vt6 leader polypeptide, the sequence difference in the leader region seems not to correlate with the virulence of Vt6.

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ID Code: 39812
Item Type: Journal Article
Refereed: Yes
Keywords: Complete nucleotide sequence, Rice tungro spherical virus, Genome, Highly virulent Strain, Vt6, Jefferson, Osmat, Ossmat, Azzam
DOI: 10.1023/A:1008116408733
ISSN: 0920-8569
Subjects: Australian and New Zealand Standard Research Classification > AGRICULTURAL AND VETERINARY SCIENCES (070000) > HORTICULTURAL PRODUCTION (070600)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2000 Kluwer Academic Publishers, Boston.
Deposited On: 05 Apr 2011 01:31
Last Modified: 27 Dec 2012 00:41

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