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Journal Article

Leaf Infections: Siderochromes (Natural Polyhydroxamates) Mimic the "Green Island" Effect

C. L. Atkin and J. B. Neilands
Science
New Series, Vol. 176, No. 4032 (Apr. 21, 1972), pp. 300-302
Stable URL: http://www.jstor.org/stable/1733981
Page Count: 3

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Topics: Leaves, Cytokinins, Fungi, Infections, Plants, Iron, Chlorophylls, Amino acids, Ferries, Fungal spores
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Leaf Infections: Siderochromes (Natural Polyhydroxamates) Mimic the "Green Island" Effect
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Abstract

Topical application of as little as 5 × 10$^{-12}$ moles of pure siderochromes (polyhydroxamate iron-transport compounds from bacteria and fungi) onto detached bean leaves causes spots of chlorophyll retention that are surrounded by chlorotic halos. These spots appear similar to "green islands" that are caused by certain fungal infections on leaves and are somewhat similar to zones where senescence is delayed by cytokinin.

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