Abstract
SEVERAL authors have reported a decrease in nucleolar incorporation of 3H-uridine into RNA in male gametocytes of maize, locusts, and mammals during meiotic prophase1–4, but the inactive nucleolus often persists. In the microsporocytes of Liliutn henryi the cytoplasmic ribosomes reportedly decrease in number during the extended meiotic prophase as the cellular RNA concentration also decreases5. Stern (personal communication) has also observed a decrease in RNA content in meiotic cells of Lilium longiflorum. We have examined the RNA synthetic activities of lily microsporocytes to see if the large nucleolus present is engaged in the synthesis of ribosomal RNA.
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PARCHMAN, L., LIN, KC. Nucleolar RNA Synthesis during Meiosis of Lily Microsporocytes. Nature New Biology 239, 235–237 (1972). https://doi.org/10.1038/newbio239235a0
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DOI: https://doi.org/10.1038/newbio239235a0
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