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首页> 外文期刊>Protoplasma: An International Journal of Cell Biology >PERICYCLE PROLIFERATION PATTERN DURING THE LATERAL ROOT INITIATION IN ADVENTITIOUS ROOTS OF ALLIUM CEPA
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PERICYCLE PROLIFERATION PATTERN DURING THE LATERAL ROOT INITIATION IN ADVENTITIOUS ROOTS OF ALLIUM CEPA

机译：洋葱CEPA不定根侧向生根过程中的增殖规律

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摘要

Far from the apical meristem of adventitious roots of Allium cepa. the pericycle shows great proliferative activity related to lateral root initiation. A group of mother pericycle cells undergoes asymmetrical transverse and periclinal divisions following a well established pattern. Successive asymmetrical transverse divisions, progressing from one end of the cell to the other, divide the original mother cell into very short derivatives. Later, these short derivative cells undergo periclinal divisions. This proliferative activity starts nearly simultaneously in two elongated and highly vacuolated pericycle cells located in the same column in front of one of the xylem poles. Then proliferation expands centrifugally towards other pericycle cells in the same and adjacent columns. The proliferative activity of the pericycle cells decreases progressively outwards. Only the most central of these cells produce derivatives which contribute to the future lateral root. [References: 32]
机译：远离葱属不定根的顶端分生组织。周缘细胞显示出与侧根起始相关的大量增殖活性。一组母周周期细胞遵循公认的模式经历不对称的横向和周周分裂。从单元的一端到另一端的连续不对称横向分裂将原始母细胞分为非常短的导数。后来，这些短的衍生细胞经历了周缘分裂。这种增殖活性几乎同时在位于木质部极之一前面的同一列中的两个细长且高度空泡的周细胞中开始。然后，增殖在同一列和相邻列中向其他周向细胞离心扩展。周细胞的增殖活性逐渐向外降低。这些细胞中只有最中央的细胞会产生衍生物，这些衍生物会促进将来的侧根生长。 [参考：32]

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