Abstract
RAJENDREN1 has recently published observations on the nuclear life cycle of Hemileia vastatrix in which he describes penetration of the leaf as occurring by means of a “bifid infection peg” produced from an appressorium, which he considers does not lie over a stoma. The two branches of the “peg” are shown as growing from the appressorium over the surface of the leaf to penetrate two separate stomata. It is surprising that Rajendren does not comment on the fact that this method of penetration is quite different from that given in the literature and which was first described by Marshall Ward3.
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References
Rajendren, R. B., Nature, 213, 106 (1967).
Rayner, R. W., Ann. App. Biol., 49, 497 (1961).
Ward, H. M., Quart. J. Microsc. Sci., N. S., 22, 1 (1882).
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RAYNER, R. Infection by Hemileia vastatrix. Nature 215, 90 (1967). https://doi.org/10.1038/215090a0
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DOI: https://doi.org/10.1038/215090a0
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