生物
分生组织
多细胞生物
单元格大小
形态发生
细胞生物学
背景(考古学)
细胞
基因组大小
细胞生长
植物细胞
进化生物学
细胞分裂
遗传学
基因组
基因
古生物学
作者
Marco D'Ario,Robert Sablowski
出处
期刊:Annual Review of Genetics
[Annual Reviews]
日期:2019-12-03
卷期号:53 (1): 45-65
被引量:25
标识
DOI:10.1146/annurev-genet-112618-043602
摘要
The genetic control of the characteristic cell sizes of different species and tissues is a long-standing enigma. Plants are convenient for studying this question in a multicellular context, as their cells do not move and are easily tracked and measured from organ initiation in the meristems to subsequent morphogenesis and differentiation. In this article, we discuss cell size control in plants compared with other organisms. As seen from yeast cells to mammalian cells, size homeostasis is maintained cell autonomously in the shoot meristem. In developing organs, vacuolization contributes to cell size heterogeneity and may resolve conflicts between growth control at the cellular and organ levels. Molecular mechanisms for cell size control have implications for how cell size responds to changes in ploidy, which are particularly important in plant development and evolution. We also discuss comparatively the functional consequences of cell size and their potential repercussions at higher scales, including genome evolution.
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