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The Ultrastructure of Sporogenesis in the Pycnial Stage of Puccinia sorghi

F. H. J. Rijkenberg and Susarah J. Truter
Mycologia
Vol. 66, No. 2 (Mar. - Apr., 1974), pp. 319-326
DOI: 10.2307/3758365
Stable URL: http://www.jstor.org/stable/3758365
Page Count: 8
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
The Ultrastructure of Sporogenesis in the Pycnial Stage of Puccinia sorghi
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Abstract

Sporogenesis in pycnia of Puccinia sorghi is annellophoric, but at secession the spore retains the septal lamella and at least part of the lower septal wall. Pycniospores are bounded by a thin (±65 nm) wall and contain a nucleolate nucleus, endoplasmic reticulum, tubule-containing structures, several short mitochondria with predominantly platelike cristae, many ribosomes, and a few lipoid bodies. Septal pores were sectioned infrequently in pycnia, but more commonly in inter- and intracellular hyphae. All were equipped with a pulley-wheel apparatus.

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