Kudoh Hiroshi, Sakane Masato, Marhold Karol, Shimizu-Inatsugi Rie, Shimizu Kentaro K, Fukaki Hidehiro
Center for Ecological Research, Kyoto University, Otsu 520-2113, Japan.
Institute of Botany, Plant Science and Biodiversity Centre, Slovak Academy of Sciences, Bratislava 845 23, Slovak Republic.
iScience. 2025 Jul 12;28(8):113106. doi: 10.1016/j.isci.2025.113106. eCollection 2025 Aug 15.
Root aerenchyma is essential for survival under waterlogged conditions for plants. It has been necessary to explore a model system of schizogenous aerenchyma in Brassicaceae. Here, we report the formation of schizogenous aerenchyma in primary roots of seedlings of showing a rather simple cartwheel pattern. The formation of the aerenchyma was suggested to involve three developmental processes: (1) formation of a three-layered cortex, (2) circumferential division of the outer layer of the cortex, and (3) circumferential detachment of cells in the middle layer of the cortex. The root aerenchyma of the seedling discovered here is the simplest one ever reported, and is a suitable candidate for the model of schizogenous aerenchyma development in plants.
根通气组织对于植物在淹水条件下的生存至关重要。有必要探索十字花科裂生通气组织的模型系统。在此，我们报道了拟南芥幼苗初生根中裂生通气组织的形成，其呈现出相当简单的车轮状模式。通气组织的形成被认为涉及三个发育过程：(1) 三层皮层的形成，(2) 皮层外层的周向分裂，以及 (3) 皮层中层细胞的周向分离。此处发现的拟南芥幼苗的根通气组织是迄今报道的最简单的一种，是植物裂生通气组织发育模型的合适候选者。
