Severe symptoms in native plant species inoculated with infective sap containing introduced or indigenous viruses.

<p>A, Severe stunting caused by systemic infection with an introduced generalist virus (<i>Cucumber mosaic virus</i>) in two plants of <i>Anigozanthos manglesii</i> (left) compared with healthy vigorous growth in two mock-inoculated plants of <i>A. manglesii</i> (right); B, Severe plant stunting, apical shoot necrosis and leaf necrosis caused by recent infection with an introduced generalist virus (<i>Tomato spotted wilt virus</i>, TSWV) in three plants <i>A. manglesii</i> (left) compared with healthy vigorous growth in three recently mock-inoculated plants of <i>A. manglesii</i> (right); C, Severe plant stunting, leaf necrosis and leaf chlorosis caused by infection with TSWV in five plants of <i>Solanum symonii</i> (right) compared with healthy vigorous growth in five mock-inoculated plants of <i>S. symoniii</i> (left); D, Systemic necrosis and death caused by infection with an introduced generalist virus (<i>Turnip mosaic virus</i>) in two plants of <i>Trachymene coerulea</i> (front) compared with healthy vigorous growth in two mock-inoculated <i>T. coerulea</i> plants (back); E, Severe stunting caused by systemic infection with an indigenous virus (Clitoria chlorosis virus) in two plants of <i>Kennedia coccinea</i> (right) compared with healthy vigorous growth in two mock-inoculated plants of <i>K. coccinea</i> (left). F, Severe stunting caused by recent systemic infection with an indigenous virus (<i>Passion fruit woodiness virus</i>) in a plant of <i>K. coccinea</i> (right) compared with healthy vigorous growth in a recently mock-inoculated plant of <i>K. coccinea</i> (left).