Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Campus UAB, Bellaterra, Barcelona, Spain.
Fundación Instituto Leloir, Instituto de Investigaciones Bioquímicas de Buenos Aires-CONICET, C1405BWE Buenos Aires, Argentina.
Curr Opin Plant Biol. 2020 Oct;57:87-95. doi: 10.1016/j.pbi.2020.06.005. Epub 2020 Aug 26.
Brassinosteroids (BRs) are steroid hormones that play crucial roles in plant growth, development and adaptation to shifting environmental conditions. Our current understanding of the origin, evolution and functional significance of BRs is influenced by a double-edged bias: most we know stems from studies on a single species and, on the flip side, dearth of information from a phylogenetically broad and significant array of land plants precludes well-grounded comparisons. Here, we provide an update on BR presence and sensing along land plant evolution. Furthermore, a comprehensive search in all major plant lineages reveals the widespread presence of BR-receptor related sequences, suggesting that steroid-related signals may have been functional early in the evolution of land plants.
油菜素内酯（BRs）是甾醇类激素，在植物生长、发育和适应环境变化中起着至关重要的作用。我们对 BRs 的起源、进化和功能意义的理解受到了双重偏见的影响：我们所知道的大部分知识都来自于对单个物种的研究，而另一方面，由于缺乏来自广泛且具有重要意义的陆地植物谱系的信息，因此无法进行合理的比较。在这里，我们提供了陆地植物进化过程中 BR 存在和感知的最新信息。此外，在所有主要的植物谱系中进行的全面搜索揭示了 BR 受体相关序列的广泛存在，这表明甾醇相关信号可能在陆地植物进化的早期就具有功能。
