摘要
细胞程序性死亡(PCD)普遍存在于植物体发育过程中,是发生在特定阶段的自然的细胞死亡过程。在逆境胁迫因子如病原体、昆虫、低氧、低温、热激、金属离子等作用下,植物为了抵御不良环境的侵害,以C a2+、活性氧、NO等为信号因子,诱导植物体的特定部位发生PCD,形成细胞主动性死亡,从而避免逆境对其他组织进一步伤害,并使植物获得对不良环境的适应性。本文通过对植物PCD的一般特征、环境胁迫因子及诱导PCD信号传递途径、生物学意义和存在问题等进行了综述,为在逆境条件下深入研究植物细胞程序性死亡提供参考。
Programmed cell death （PCD） is a natural cell death process that occurs at certain stage of development, and commonly presents in the process of plant development. With the effect of adversity factors i.e. pathogens, insects, low oxygen and temperature, heat shock and metallic ion etc. , in order to resist bad environment invasion, plant can induce and generate PCD at particular tissue by using Ca^2＋ , active oxygen, NO etc. as signal factors, thereby avoid further damage to other tissues, and get adaptability to bad environment. The paper summarized the general characteristics, environment stress factors and its transduction pathway in inducting PCD signal, biological significance and existing problems of PCD of plant, it could provide references to further study PCD of plant in adversity conditions.
出处
《广西农业科学》
CAS
CSCD
2006年第1期13-16,共4页
Guangxi Agricultural Sciences
基金
国家自然科学基金(30560070)
关键词
植物
细胞程序性死亡
逆境
传导途径
plant
programmed cell death, adversity
transduction pathway
