Propositions pour la notation usuelle à base latine du berbère et application sur le rifain
Propositions pour la notation usuelle à base latine du berbère et application sur le rifain
复制标题
柏柏尔拉丁语基础记法命题及其在利法因上的应用
DOI：
10.1007/s11105-015-0893-7
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发表时间：
1999
影响因子：
2.1
通讯作者：
M. Lafkioui
中科院分区：
文献类型：
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作者：
M. Lafkioui
核内复制是一种细胞周期，其中 DNA 复制在不发生细胞分裂的情况下继续进行，它与植物发育和分化密切相关。关于miR319a对植物发育影响的研究已有很多报道，但很少有资料表明植物细胞分裂和发育是否是miR319a的集体作用。为了探讨miR319a对细胞分裂和发育的影响，本研究在拟南芥中过表达miR319。miR319a过表达的植物表现出异常的器官表型，如重锯齿状叶子、皱折长角果、浓密毛状体、勺状萼片和异常花器官。这些现象表明miR319a在调节植物形态建成中发挥重要作用。在细胞水平上，miR319的过度表达减少了叶表皮细胞的最终大小。此外，miR319a过表达还减少了叶细胞的核内复制并上调了细胞周期相关基因的一些成员的表达。综上所述，miR319a 在拟南芥的发育和细胞分裂中发挥着关键作用。
Endoreduplication, a type of cell cycle in which DNA replication continues without cell division, is deeply involved in plant development and differentiation. Many researches aboutmiR319ainfluence on plant development have been reported, but there is little information to indicate whether plant cell division and development are the collective effect ofmiR319a. To examine the effect ofmiR319aon cell division and development,miR319awas overexpressed inArabidopsisin this study.miR319a-overexpressing plants exhibited abnormal organ phenotypes such as heavy serrated leaves, crinkled siliques, bushy trichomes, spoon-like sepals, and abnormal floral organs. These phenomena suggested thatmiR319aplayed important roles in modulating plant morphogenesis. At the cellular level, overexpression ofmiR319adecreased the final size of leaf epidermal cell. Furthermore,miR319aoverexpression also reduced endoreduplication in leaf cells and upregulated the expression of some members of the cell cycle-related genes. Taken together,miR319aplays a pivotal role in development and cell division inArabidopsis.