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Low Genetic Diversity Suggests a Single Introduction and Recent Spread of T omato chlorosis virus in B razil
Author(s) -
Barbosa Júlio C.,
Rezende Jorge A. M.,
Filho Armando B.
Publication year - 2013
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/jph.12143
Subject(s) - biology , genetic diversity , chlorosis , virus , genetics , virology , gene , botany , demography , sociology , population
By comparing the partial nucleotide sequences of the heat shock protein HSP 70 homologue gene, we assessed the genetic diversity of B razilian tomato isolates of T omato chlorosis virus (To CV ), as well as their relationship with other To CV isolates found worldwide. The B razilian To CV isolates shared 99.9–100% nucleotide identity, which indicates low genetic diversity. B razilian To CV isolates showed a closer evolutionary relationship to those from Mediterranean countries. Based on these results, the origin of B razilian To CV isolates and the possible number of introductions of the virus into B razil are discussed.

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