PDF(Pubmed)
Abstract：
Brassinosteroids (BRs) are an essential group of plant hormones regulating numerous aspects of plant growth, development, and stress responses. BRI1, along with its co-receptor BAK1, are involved in brassinosteroid sensing and early events in the BR signal transduction cascade. Mutational analysis of a particular gene is a powerful strategy for investigating its biochemical role. Molecular genetic studies, predominantly in Arabidopsis thaliana, but progressively in numerous other plants, have identified many mutants of the BRI1 gene and its orthologs to gain insight into its structure and function. So far, the plant kingdom has identified up to 40 bri1 alleles in Arabidopsis and up to 30 bri1 orthologs in different plants. These alleles exhibit phenotypes that are identical in terms of development and growth. Here, we have summarized bri1 alleles in Arabidopsis and its orthologs present in various plants including monocots and dicots. We have discussed the possible mechanism responsible for the specific allele. Finally, we have briefly debated the importance of these alleles in the research field and the agronomically valuable traits they offer to improve plant varieties.
摘要：
油菜素类固醇（BRs）是一组重要的植物激素，调节植物生长的许多方面，发展,和应激反应。BRI1及其共受体BAK1参与BR信号转导级联中的油菜素类固醇传感和早期事件。特定基因的突变分析是研究其生化作用的有力策略。分子遗传学研究,主要在拟南芥，但在许多其他植物中，已经鉴定了BRI1基因及其直系同源物的许多突变体，以深入了解其结构和功能。到目前为止,植物界在拟南芥中鉴定出多达40个bri1等位基因，在不同植物中鉴定出多达30个bri1直向同源物。这些等位基因表现出在发育和生长方面相同的表型。这里,我们总结了拟南芥中的bri1等位基因及其在各种植物中存在的直系同源物，包括单子叶植物和双子叶植物。我们已经讨论了负责特定等位基因的可能机制。最后,我们已经简单地讨论了这些等位基因在研究领域的重要性，以及它们提供的农学上有价值的性状，以改善植物品种。
