Smolikova Galina, Medvedev Sergei
Department of Plant Physiology and Biochemistry, St. Petersburg State University, 199034 St. Petersburg, Russia.
Plants (Basel). 2022 Jul 30;11(15):1988. doi: 10.3390/plants11151988.
Transition from seed to seedling represents a critical stage in plants' life cycles. This process includes three significant events in the seeds: (i) tissue hydration, (ii) the mobilization of reserve nutrients, and (iii) the activation of metabolic activity. Global metabolic rearrangements lead to the initiation of radicle growth and the resumption of vegetative development. It requires massive reprogramming of the transcriptome, proteome, metabolome, and attendant signaling pathways, resulting in the silencing of seed-maturation genes and the activation of vegetative growth genes. This Special Issue discusses the mechanisms of genetic, epigenetic, and hormonal switches during seed-to-seedling transitions. Detailed information has also been covered regarding the influence of germination features on seedling establishment.
从种子到幼苗的转变是植物生命周期中的一个关键阶段。这个过程在种子中包括三个重要事件：（i）组织水合作用，（ii）储备养分的动员，以及（iii）代谢活性的激活。整体代谢重排导致胚根生长的启动和营养发育的恢复。这需要对转录组、蛋白质组、代谢组以及相关信号通路进行大规模的重新编程，从而导致种子成熟基因的沉默和营养生长基因的激活。本期特刊讨论了种子到幼苗转变过程中遗传、表观遗传和激素开关的机制。还涵盖了有关萌发特性对幼苗建立影响的详细信息。
