The Evolutionary History and Spatiotemporal Dynamics of the NC Lineage of Citrus Tristeza Virus

作者：María José Benítez-Galeano, Matías Castells, Rodney Colina · 发表于：Viruses · 年份：2017 · DOI：10.3390/v9100272 · 被引用次数：22 · 研究领域：Plant Virus Research Studies、Insect-Plant Interactions and Control、Phytoplasmas and Hemiptera pathogens

Citrus tristeza virus (CTV) is a major pathogen affecting citrus trees worldwide. However, few studies have focused on CTV’s evolutionary history and geographic behavior. CTV is locally dispersed by an aphid vector and long distance dispersion due to transportation of contaminated material. With the aim to delve deeper into the CTV-NC (New Clade) genotype evolution, we estimated an evolution rate of 1.19 × 10−3 subs/site/year and the most common recent ancestor in 1977. Furthermore, the place of origin of the genotype was in the United States, and a great expansion of the population was observed in Uruguay. This expansion phase could be a consequence of the increment in the number of naïve citrus trees in Uruguayan orchards encompassing citrus industry growth in the past years.