Quirino B F, Noh Y S, Himelblau E, Amasino R M
Department of Biochemistry, University of Wisconsin - Madison, WI 53706, USA.
Trends Plant Sci. 2000 Jul;5(7):278-82. doi: 10.1016/s1360-1385(00)01655-1.
Senescence is the last stage of leaf development and one type of programmed cell death that occurs in plants. The relationships among senescence programs that are induced by a variety of factors have been addressed at a molecular level in recent studies. Furthermore, an overlap between the pathogen-response and senescence programs is beginning to be characterized. The complexity of the senescence program is also evident in studies of senescence-specific gene regulation and the role of photosynthesis and plant hormones in senescence regulation. New molecular-genetic approaches are expected to be useful in unraveling the molecular mechanisms of the leaf senescence program.
衰老 是叶片发育的最后阶段，也是植物中发生的一种程序性细胞死亡类型。近年来的研究已在分子水平上探讨了由多种因素诱导的衰老程序之间的关系。此外，病原体反应程序和衰老程序之间的重叠也开始得到表征。衰老程序的复杂性在衰老特异性基因调控以及光合作用和植物激素在衰老调控中的作用的研究中也很明显。新的分子遗传学方法有望有助于阐明叶片衰老程序的分子机制。
