Liu Yin, Wang Dan, Yuan Yu, Liu Yue, Lv Bingsheng, Lv Haiyan
College of Horticulture, Jilin Agricultural University, Changchun 130118, China.
College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China.
Int J Mol Sci. 2024 Dec 7;25(23):13159. doi: 10.3390/ijms252313159.
Plants exhibit diverse pathways to regulate the timing of flowering. Some plant species require a vegetative phase before being able to perceive cold stimuli for the acceleration of flowering through vernalization. This research confirms the correlation between the vernalization process and seedling age in Welsh onions. Findings from two vernalization experiments conducted at different time intervals demonstrate that seedlings must reach a vegetative phase of at least 8 weeks to consistently respond to vernalization. Notably, 8-week-old seedlings subjected to 6 weeks of vernalization displayed the shortest time to bolting, with an average duration of 138.1 days. Transcriptome analysis led to the identification of genes homologous to those in that regulate flowering. Specifically, (), (), (), (), and () were identified and suggested to have potential significance in age-dependent vernalization in Welsh onions. This study not only presents a rapid vernalization method for Welsh onions but also provides a molecular foundation for understanding the interplay between seedling age and vernalization.
植物展现出多种调节开花时间的途径。一些植物物种在能够感知寒冷刺激以通过春化作用加速开花之前，需要一个营养生长阶段。本研究证实了大葱春化过程与幼苗年龄之间的相关性。在不同时间间隔进行的两项春化实验结果表明，幼苗必须达到至少8周的营养生长阶段才能持续对春化做出反应。值得注意的是，接受6周春化处理的8周龄幼苗抽薹时间最短，平均持续时间为138.1天。转录组分析导致鉴定出与调节开花的基因同源的基因。具体而言，鉴定出了（）、（）、（）、（）和（），并表明它们在大葱年龄依赖性春化中具有潜在意义。本研究不仅提出了一种大葱快速春化方法，还为理解幼苗年龄与春化之间的相互作用提供了分子基础。
