逆境诱导开花调控机理的研究进展

表观遗传修饰可以影响植物生长和发育的多个方面，是植物响应环境和发育调控的重要方式。开花同样受到环境和发育的调控，保证植物在逆境条件下也能完成生命周期。笔者简述了植物在非生物胁迫（例如寒冷、干旱和高盐等）条件下的表观遗传变化，及其开花调控的最新研究进展。这些表观遗传修饰主要包括DNA甲基化和组蛋白修饰，在植物的生长发育过程中，开花的表观遗传修饰与逆境响应的表观遗传修饰之间存在重要的联系，植物可能通过相同的表观遗传因子或途径同时调控开花和逆境响应。

Research Advances in Molecular Mechanism of Stress-induced Flowering

Flowering is controlled by a set of genes that are affected by environmental conditions through an alteration in their expression pattern. This ensures the production of flowers even when plants are growing under adverse conditions. In this review recent findings on the epigenetic changes associated with flowering in Arabidopsis thaliana grown under abiotic stress conditions such as cold, drought, and high salinity are discussed. These epigenetic modifications include DNA methylation and histone modifications. It was shown that there was a crucial relationship between the epigenetic modifications associated with floral initiation and development and modifications associated with stress tolerance. This relationship was demonstrated by the common epigenetic pathways through which plants control both flowering and stress tolerance.