The Center for Molecular Cell and Systems Biology, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, College of Life Sciences, Fujian Agriculture & Forestry University, Fuzhou 350002, China.
Int J Mol Sci. 2017 Oct 16;18(10):2152. doi: 10.3390/ijms18102152.
Senescence affect different traits of plants, such as the ripening of fruit, number, quality and timing of seed maturation. While senescence is induced by age, growth hormones and different environmental stresses, a highly organized genetic mechanism related to substantial changes in gene expression regulates the process. Only a few genes associated to senescence have been identified in crop plants despite the vital significance of senescence for crop yield. The gene family has been shown to play a role in leaf senescence. The barley gene is one of the senescence marker genes which shows expression during age-dependent as well as dark-induced senescence. Like barley , the Arabidopsis gene is also induced during natural senescence as well as in response to treatment with abscisic acid, salicylic acid, darkness and pathogen attack. It is speculated that rice has a similar function in the leaf senescence of rice.
衰老会影响植物的不同特征，例如果实的成熟、种子成熟的数量、质量和时间。虽然衰老受年龄、生长激素和不同环境压力的诱导，但与基因表达发生重大变化相关的高度组织化的遗传机制调节着这一过程。尽管衰老对作物产量至关重要，但在作物植物中仅鉴定出少数与衰老相关的基因。 基因家族已被证明在叶片衰老中起作用。大麦 基因是衰老标记基因之一，在年龄依赖性和黑暗诱导的衰老过程中表达。与大麦一样，拟南芥 基因也在自然衰老以及对脱落酸、水杨酸、黑暗和病原体攻击的反应中被诱导。据推测，水稻 在水稻叶片衰老中具有类似的功能。
