木质部
分生组织
韧皮部
血管组织
生物
维管形成层
次生生长
植物发育
细胞生物学
植物
形成层
生物化学
开枪
基因
作者
Kaori Furuta,Eva Hellmann,Ykä Helariutta
标识
DOI:10.1146/annurev-arplant-050213-040306
摘要
Land plants develop vascular tissues that enable the long-distance transport of water and nutrients in xylem and phloem, provide mechanical support for their vertical growth, and produce cells in radial growth. Vascular tissues are produced in many parts of the plant and during different developmental stages. Early vascular development is focused in procambial meristems, and in some species it continues during the secondary phase of plant development in cambial meristems. In this review, we highlight recent progress in understanding procambial development. This involves the analysis of stem cell-like properties of procambial tissues, specification of xylem and phloem, and differentiation of the conductive tissues. Several major plant hormones, small-RNA species, and transcriptional networks play a role in vascular development. We describe current approaches to integrating these networks as well as their potential role in explaining the diversity and evolution of plant vascular systems.
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