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| 1 | The mechanism and function of active DNA demethylation in plants显示文摘DNA methylation is a conserved and important epigenetic mark in both mammals and plants.DNA methylation can be dynamically established,maintained,and removed through different pathways.In plants,active DNA demethylation is initiated by the RELEASE OF SILENCING 1(ROS1)family of bifunctional DNA glycosylases/lyases.Accumulating evidence suggests that DNA demethylation is important in many processes in plants.In this review,we summarize recent studies on the enzymes and regulatory factors that have been identified in the DNA demethylation pathway.We also review the functions of active DNA demethylation in plant development as well as biotic and abiotic stress responses.Finally,we highlight those aspects of DNA demethylation that require additional research. | Ruie Liu Zhaobo Lang | 2020 | Journal of Integrative Plant Biology2020，62，1： | 9 |
| 2 | 玉米PRC2基因在子粒发育过程中的表达分析显示文摘以玉米自交系昌7-2授粉后不同天数的玉米子粒为研究对象,通过实时荧光定量PCR技术,对玉米中3个Polycomb Repressive Complex 2基因(PRC2)Mez1(Maize enhancer of zeste 1)、Fie1(Fertilization independent endosperm 1)和Vef101(VEF family protein 101)在授粉后不同天数的表达情况进行研究。结果表明,Mez1、Fie1和Vef101在授粉后子粒发育不同阶段均有表达,Fie1在子粒发育过程中呈先上升后下降的趋势,授粉后10 d表达量最高,表明Fie1可能在子粒由胚胎形成到干物质积累的过渡时期发挥调控作用;Mez1在子粒发育过程中呈先下降后上升的趋势,授粉后10 d表达量最低,子粒发育后期表达量明显上升,表明Mez1可能在子粒淀粉积累过程中发挥调控作用;Vef101只在授粉后5 d的子粒中呈现高表达,其他时期表达量均较低,表明Vef101可能在玉米子粒发育早期胚胎形成过程中发挥调控作用。 | 吴博 刘晓 王玲 阚云超 李丹丹 | 2016 | 玉米科学2016，24，5： | 0 |
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