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Annals of Botany
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🚨 Another finding in the Osgsl5-3 mutant: increased distance between pollen mother cells and impaired premeiotic shaping. This suggests that callose plays a structural role in keeping cells organized for successful meiosis. (6/8)

Figure with two panels showing extracellular distance between adjacent pollen mother cells increases when rice anthers enter meiosis in the Osgsl5-3 mutant. In panel A, the electron microscope images show the gap between the plasma membranes (marked by the red double arrow) of two neighboring pollen mother cells in wild-type (WT) and Osgsl5-3 mutant anthers during the premeiotic stage (Mei1). The dark gray line between the cells represents the middle lamella, rich in pectin. Scale bar = 1μm. Panel B compares the distance between cells at three different interfaces in WT and Osgsl5-3 anthers, with all values normalized against the distance between tapetal cells (TC). The lines in each box represent the median, and asterisks indicate significant differences between the groups (*p ≤ 0.05, **p ≤ 0.01, ***p ≤ 0.001). The numbers below the graph indicate the sections analyzed for each cell interface and stage.
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📊 The study concludes that the turnover of cellulose to callose in pollen mother cells is vital for maintaining both cell connections and optimal cell arrangement during meiosis. (7/8)

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AO
Annals of Botany
@annbot.bsky.social
Bluesky feed for Annals of Botany articles.
305 followers14 following694 posts