Spontaneous intercellular chromatin migration/cytomixis was observed to occur in the pollen mother cells (PMCs) of the Chlorophytum comosum for the first time. The migration through cytomictic channels was more pronounced in meiosis-I and very rare in meiosis-II. The process was associated with erratic meiosis, which was characterized by defects in chromosome organization and segregation. Cytomixis was more intense in the month of April than in July and consequently the frequency of meiotic irregularities was much more pronounced during the month of April. As a consequence of abnormal meiosis, fertility was drastically reduced resulting in meager seed efficiency of 17% only. Recombination system also does not guarantee the release of sufficient variability. We view the phenomenon of cytomixis as genetically controlled mechanism involving meiotic genes and operating through signal transduction pathway triggered by the environmental stimuli. The evolutionary significance and tenable hypothesis in the backdrop of existing literature is also proposed.

译文

:首次观察到自发的细胞间染色质迁移/细胞混合出现在绿藻的花粉母细胞(PMC)中。在减数分裂-I中,通过细胞学途径的迁移更为明显,而在减数分裂-II中则非常罕见。该过程与减数分裂不稳定有关,其特征在于染色体组织和分离缺陷。混合细胞在四月份比七月份更为强烈,因此减数分裂异常的频率在四月份更为明显。减数分裂异常的结果是,生育力大大降低,导致种子效率低下,仅为17%。重组系统也不能保证释放足够的可变性。我们将细胞混合现象视为涉及减数分裂基因的遗传控制机制,并通过环境刺激触发的信号转导途径进行操作。还提出了在现有文献背景下的进化意义和成立的假设。

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