Distribution and epidemiological patterns of sunflower chlorotic mottle virus (SCMoV) in sunflower (Helianthus annuus L.) growing areas in Argentina were studied from 2006 to 2017. The virus was detected exclusively in the Pampas region (Entre Ríos, Santa Fe, Córdoba, La Pampa and Buenos Aires provinces). Phylodynamic analyses performed using the coat protein gene of SCMoV isolates from sunflower and weeds dated the most recent common ancestor (MRCA) back to 1887 (HPD95% = 1572-1971), which coincides with the dates of sunflower introduction in Argentina. The MRCA was located in the south of Buenos Aires province and was associated with sunflower host (posterior probability for the ancestral host, ppah = 0.98). The Bayesian phylodynamic analyses revealed the dispersal patterns of SCMoV, suggesting a link between natural host diversity, crop displacement by human activities and virus spread.

中文翻译：

---

向日葵绿叶斑驳病毒（一种新兴的病理系统）的植物动力学。

2006年至2017年研究了阿根廷向日葵（Helianthus annuus L.）产区的向日葵绿叶斑驳病毒（SCMoV）的分布和流行病学模式。仅在潘帕斯地区（EntreRíos，Santa Fe，科尔多瓦，拉潘帕和布宜诺斯艾利斯省）。使用从向日葵和杂草中分离得到的SCMoV外壳蛋白基因进行的植物动力学分析可以追溯到1887年（HPD95％= 1572-1971），这与阿根廷的向日葵引入日期相吻合。MRCA位于布宜诺斯艾利斯省南部，与向日葵寄主相关（祖先寄主的后验概率，ppah = 0.98）。贝叶斯系统动力学分析揭示了SCMoV的扩散模式，表明自然宿主多样性之间存在联系，