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Alfalfa leaf curl virus (ALCV), which causes severe disease symptoms in alfalfa (Medicago sativa L.) and is transmitted by the widespread aphid species, Aphis craccivora Koch, has been found throughout the Mediterranean basin as well as in Iran and Argentina. Here we reconstruct the evolutionary history of ALCV and attempt to determine whether the recent discovery and widespread detection of ALCV is attributable either to past diagnostic biases or to the emergence and global spread of the virus over the past few years. One hundred and twenty ALCV complete genome sequences recovered from ten countries were analyzed and four ALCV genotypes (ALCV-A, ALCV-B, ALCV-C, and ALCV-D) were clearly distinguished. We further confirm that ALCV isolates are highly recombinogenic and that recombination has been a major determinant in the origins of the various genotypes. Collectively, the sequence data support the hypothesis that, of all the analyzed locations, ALCV likely emerged and diversified in the Middle East before spreading to the western Mediterranean basin and Argentina.
geminivirus, Virologie, Fields of Research::31 - Biological sciences::3105 - Genetics::310509 - Genomics, Genome, Viral, Microbiology, 630, Article, F30 - Génétique et amélioration des plantes, Plant Viruses, Evolutionary history, Viral Proteins, Alfalfa leaf curl virus;geminivirus;alfalfa;evolutionary history, Virology, Alfalfa leaf curl virus, virus de la mosaïque de la luzerne, http://aims.fao.org/aos/agrovoc/c_3940, http://aims.fao.org/aos/agrovoc/c_4698, Phylogeny, H20 - Maladies des plantes, Plant Diseases, Field of Research::06 - Biological Sciences::0604 - Genetics::060411 - Population, [SDV.MP.VIR] Life Sciences [q-bio]/Microbiology and Parasitology/Virology, Recombination, Genetic, Geography, Alfalfa, Genetic Variation, 2725 Infectious Diseases, Sequence Analysis, DNA, http://aims.fao.org/aos/agrovoc/c_603, QR1-502, Fields of Research::31 - Biological sciences::3107 - Microbiology::310706 - Virology, Geminiviridae, 900, [SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/Virology, DNA, Viral, 2406 Virology, Geminivirus, evolutionary history, alfalfa, Ecological and Evolutionary Genetics, Medicago sativa
geminivirus, Virologie, Fields of Research::31 - Biological sciences::3105 - Genetics::310509 - Genomics, Genome, Viral, Microbiology, 630, Article, F30 - Génétique et amélioration des plantes, Plant Viruses, Evolutionary history, Viral Proteins, Alfalfa leaf curl virus;geminivirus;alfalfa;evolutionary history, Virology, Alfalfa leaf curl virus, virus de la mosaïque de la luzerne, http://aims.fao.org/aos/agrovoc/c_3940, http://aims.fao.org/aos/agrovoc/c_4698, Phylogeny, H20 - Maladies des plantes, Plant Diseases, Field of Research::06 - Biological Sciences::0604 - Genetics::060411 - Population, [SDV.MP.VIR] Life Sciences [q-bio]/Microbiology and Parasitology/Virology, Recombination, Genetic, Geography, Alfalfa, Genetic Variation, 2725 Infectious Diseases, Sequence Analysis, DNA, http://aims.fao.org/aos/agrovoc/c_603, QR1-502, Fields of Research::31 - Biological sciences::3107 - Microbiology::310706 - Virology, Geminiviridae, 900, [SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/Virology, DNA, Viral, 2406 Virology, Geminivirus, evolutionary history, alfalfa, Ecological and Evolutionary Genetics, Medicago sativa
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