Response of Tobacco Root -Tip Cells to Various Sucker Control Chemicals

Q3 Agricultural and Biological Sciences
T. Tso, L. G. Burk
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Abstract

Abstract Effects of sucker control chemicals on cell division and differentiation were studied by observing changes in root-tip cells continuously submerged in 5 × 10-3M solutions of MH-30 (maleic hydrazide), fatty ester T-43 (methyl caprate), fatty alcohol T-148 (mixture of 1-octanol and 1-decanol), Penar (dimethyldodecylamine acetate), and surfactants Tween-20 (polyoxyethylene sorbitan monolaurate) and Tween-80 (polyoxyethylene sorbitan monooleate). No adverse cytological effects were induced by surfactants. Meristematic cells treated with MH-30 appeared to be normal but there was no cell division. MH-30 also caused fragmentation or duplication of nuclei on differentiating cells. The effects of fatty materials (T-43 and T-148) include immediate swelling of the nucleus and then a general cessation of cell division. Penar caused enlargement of differentiating cells and nuclear fragmentation or duplication, a higher frequency of binucleate cells was found to be induced by Penar than T-148 or even MH-30. In general, sucker control compounds tested in this study induced a rather low incidence of endomitotic action which was limited to certain differentiating cells.
烟草根尖细胞对不同控烟剂的响应
摘要通过观察根尖细胞连续浸泡在5 × 10-3M的MH-30(马来酰肼)、脂肪酯T-43(己酸甲酯)、脂肪醇T-148(1-辛醇和1-癸醇混合物)、Penar(醋酸二甲基十二烷基胺)和表面活性剂Tween-20(聚氧乙烯山梨醇单月果酸酯)和Tween-80(聚氧乙烯山梨醇单油酸酯)溶液中的变化,研究了诱吸剂对细胞分裂和分化的影响。表面活性剂未引起不良细胞学效应。经MH-30处理后的分生组织细胞看似正常,但未发生细胞分裂。MH-30还能引起分化细胞的细胞核分裂或复制。脂肪物质(T-43和T-148)的作用包括细胞核立即肿胀,然后细胞分裂普遍停止。Penar诱导分化细胞增大,细胞核分裂或复制,双核细胞的发生频率高于T-148甚至MH-30。总的来说,本研究中测试的吸盘控制化合物诱导的内膜分裂作用发生率相当低,仅限于某些分化细胞。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Beitrage zur Tabakforschung International/ Contributions to Tobacco Research
Beitrage zur Tabakforschung International/ Contributions to Tobacco Research Agricultural and Biological Sciences-Agronomy and Crop Science
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