Abstract
Dark green islands (DGIs) have been an enigma since they were first documented before the nature of viruses was known (reviewed in Allard, 1914). In 1898 Beijerinck identified the casual agent of tobacco mosaic disease as a contagious solution a “contagium vivum fluidum” and described dark green blotches on the upper leaves of infected plants (Goldstein, 1926). When a mosaic virus infects a plant, these discrete regions of dark green tissue occur only on leaves that are systemically infected when immature. Leaves that are fully developed at the time of infection do not develop DGIs. A variety of tools and plant-virus models have been used in the years since Beijerinck’s report to compare the dark green tissue with the surrounding yellow tissue. These experiments and observations have been aimed at determining the nature and causes of DGIs.
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Moore, C.J., MacDiarmid, R.M. (2006). Dark Greens Islands: the Phenomenon. In: Loebenstein, G., Carr, J.P. (eds) Natural Resistance Mechanisms of Plants to Viruses. Springer, Dordrecht. https://doi.org/10.1007/1-4020-3780-5_9
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DOI: https://doi.org/10.1007/1-4020-3780-5_9
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