Liang Huawei, Zhou Jian, Chen Chen
Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Zhongshan Biological Breeding Laboratory/Key Laboratory of Plant Functional Genomics of the Ministry of Education, Agricultural College of Yangzhou University, Yangzhou 225009, China.
Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Zhongshan Biological Breeding Laboratory/Key Laboratory of Plant Functional Genomics of the Ministry of Education, Agricultural College of Yangzhou University, Yangzhou 225009, China; Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Agricultural College of Yangzhou University, Yangzhou 225009, China; Yangzhou Modern Seed Innovation Institute, Gaoyou 225600, China.
Plant Commun. 2025 Apr 14;6(4):101283. doi: 10.1016/j.xplc.2025.101283. Epub 2025 Feb 12.
Cereal aleurone cells are differentiated from triploid endosperm cells and exhibit distinct cytological, physiological, and biochemical characteristics that distinguish them from the starchy endosperm cells of cereals. Aleurone cells maintain viability throughout seed development, whereas starchy endosperm cells undergo programmed cell death during maturation. Despite variations in aleurone-related traits among cereal species, the aleurone layer plays a crucial role in regulating many aspects of seed development, including the accumulation of storage reserves, the acquisition of dormancy, and germination. Given that many nutrients-such as lipids, dietary fibers, vitamins, and minerals like iron and zinc-are predominantly accumulated in the aleurone cells of cereal grains, this layer has attracted considerable attention aimed at improving the nutritional value of cereals. This review provides a comprehensive overview of the developmental, genetic, and molecular basis of aleurone cell differentiation and proliferation. It focuses on the improvement of aleurone-related traits informed by knowledge of the molecular networks governing aleurone development and presents a detailed discussion on the challenges and potential solutions associated with cereal improvement through the manipulation of aleurone-related traits.
谷物糊粉层细胞由三倍体胚乳细胞分化而来，具有独特的细胞学、生理学和生化特性，使其有别于谷物的淀粉胚乳细胞。糊粉层细胞在种子发育过程中一直保持活力，而淀粉胚乳细胞在成熟过程中会经历程序性细胞死亡。尽管不同谷物物种之间与糊粉层相关的性状存在差异，但糊粉层在调节种子发育的许多方面发挥着关键作用，包括贮藏物质的积累、休眠的获得以及萌发。鉴于许多营养物质，如脂质、膳食纤维、维生素以及铁和锌等矿物质，主要积累在谷物籽粒的糊粉层细胞中，这一层已引起了旨在提高谷物营养价值的广泛关注。本综述全面概述了糊粉层细胞分化和增殖的发育、遗传和分子基础。它着重于基于对调控糊粉层发育的分子网络的了解来改善与糊粉层相关的性状，并详细讨论了通过操纵与糊粉层相关的性状来改良谷物所面临的挑战和潜在解决方案。
