State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, China.
Joint Center for Single Cell Biology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China.
Plant Cell Environ. 2021 Aug;44(8):2441-2454. doi: 10.1111/pce.14065. Epub 2021 May 20.
Plant architecture plays a major role in canopy photosynthesis and biomass production, and plants adjust their growth (and thus architecture) in response to changing environments. Leaf angle is one of the most important traits in rice (Oryza sativa L.) plant architecture, because leaf angle strongly affects leaf direction and rice production, with more-erect leaves being advantageous for high-density plantings. The degree of leaf bending depends on the morphology of the lamina joint, which connects the leaf and the sheath. In this review, we discuss cell morphology in different lamina joint tissues and describe the underlying genetic network that governs this morphology and thus regulates leaf direction. Furthermore, we focus on the mechanism by how environmental factors influence rice leaf angle. Our review provides a theoretical framework for the future genetic improvement of rice leaf orientation and plant architecture.
植物结构在冠层光合作用和生物量生产中起着重要作用，植物会根据环境变化来调整其生长（从而改变结构）。叶角是水稻（Oryza sativa L.）植物结构的最重要特征之一，因为叶角强烈影响叶片方向和水稻产量，较直立的叶片有利于高密度种植。叶片弯曲的程度取决于连接叶片和叶鞘的叶舌形态。在这篇综述中，我们讨论了不同叶舌组织中的细胞形态，并描述了控制这种形态从而调节叶片方向的遗传网络。此外，我们还重点研究了环境因素如何影响水稻叶角的机制。我们的综述为未来水稻叶片方向和植物结构的遗传改良提供了理论框架。
