Plants, Volume 12, Issue 10
2023 May-2 - 143 articles
Cover Story: In flowering plants, during mitosis–meiosis transition, the pollen mother cell (PMC) walls are drastically remodeled, whereby cellulose-rich walls gradually disappear and a considerable amount of callose (β-1,3 glucans), secreted from PMCs, fills the extracellular spaces of anther locules completely. This hyper-callose accumulation is a ‘histological hallmark’ of PMCs entering the meiosis cycle. Recently, it was uncovered that the anther callose depletion impacts male meiosis initiation and progression, with severe consequences on key meiotic events, such as homologous pairing and synapses, resulting in male sterility. Thus, the findings answered the question regarding the biological meaning of callose deposition during mitosis–meiosis transition in sexual plants. View this paper - Issues are regarded as officially published after their release is announced to the table of contents alert mailing list .
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