Viruses, Vol. 15, Pages 2384: Tobacco Mild Green Mosaic Virus (TMGMV) Isolates from Different Plant Families Show No Evidence of Differential Adaptation to Their Host of Origin

Viruses, Vol. 15, Pages 2384: Tobacco Mild Green Mosaic Virus (TMGMV) Isolates from Different Plant Families Show No Evidence of Differential Adaptation to Their Host of Origin Viruses doi: 10.3390/v15122384 Authors: Rafael de Andrés-Torán Laura Guidoum Adrian D. Zamfir Miguel Ángel Mora Santiago Moreno-Vázquez Fernando García-Arenal The relevance of tobamoviruses to crop production is increasing due to new emergences, which cannot be understood without knowledge of the tobamovirus host range and host specificity. Recent analyses of tobamovirus occurrence in different plant communities have shown unsuspectedly large host ranges. This was the case of the tobacco mild green mosaic virus (TMGMV), which previously was most associated with solanaceous hosts. We addressed two hypotheses concerning TMGMV host range evolution: (i) ecological fitting, rather than genome evolution, determines TMGMV host range, and (ii) isolates are adapted to the host of origin. We obtained TMGMV isolates from non-solanaceous hosts and we tested the capacity of genetically closely related TMGMV isolates from three host families to infect and multiply in 10 hosts of six families. All isolates systemically infected all hosts, with clear disease symptoms apparent only in solanaceous hosts. TMGMV multiplication depended on the assayed host but not on the isolate’s host of origin, with all isolates accumulating to the highest levels in Nicotiana tabacum. Thus, results su...
Source: Viruses - Category: Virology Authors: Tags: Article Source Type: research
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