Effects of ethylene on the production, elongation, and differentiation of endodermal cells in maize primary root: An integrative analysis of the developmental process of a particular cell type
Effects of ethylene on the production, elongation, and differentiation of endodermal cells in maize primary root: An integrative analysis of the developmental process of a particular cell type
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DOI：
10.3117/plantroot.2.29
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发表时间：
2008
期刊：
影响因子：
0.6
通讯作者：
I. Karahara;K. Matsuda;Yoshihiro Honma
中科院分区：
文献类型：
--
作者：
I. Karahara;K. Matsuda;Yoshihiro Honma
提出了一种独特的综合分析来监测根中特定细胞类型的发育过程中的变化，即细胞分化、生产和伸长的速率。以玉米初生根为模型，分析了外源乙烯对内胚层细胞分化、分裂和伸长的影响。内胚层细胞分化的形态标志凯氏带最低点到根尖的距离随乙烯浓度的增加而减小。内胚层细胞通量在一个单一的细胞文件，细胞分裂的指标，减少响应乙烯，虽然估计所需的时间为一个单独的细胞完成形成的凯氏带，作为细胞分化率的指标，没有。作为细胞伸长的指标，成熟细胞的长度没有改变乙烯的存在下，虽然细胞伸长的时间增加。凯氏带形成后，内胚层细胞已停止伸长，无论乙烯的存在。
A unique integrative analysis is proposed to monitor changes in the develop- mental processes of a particular cell type in the root, i.e. the rates of cell differentiation, produc- tion, and elongation. As a model case, effects of exogenous ethylene on differentiation, division and elongation of endodermal cells were ana- lyzed in maize primary roots. The distance from the lowest position of the Casparian strip, a morphological marker for endodermal cell differentiation, to the root tip decreased in response to ethylene in a dose-dependent manner. The endodermal cell flux in a single cell file, an indicator for cell division, decreased in response to ethylene, although the estimated time required for an individual cell to complete the formation of the Casparian strip, as an indicator for the cell differentiation rate, did not. As indicators for cell elongation, the mature cell length did not change in the presence of ethylene, although the period for cell elongation increased. The Casparian strip formed after the endodermal cell had ceased elongation, irrespective of the presence of ethylene.