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A genomic and molecular view of wood formation

机译：木材形成的基因组和分子观点

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Wood formation is a process derived from plant secondary growth. Different from primary growth, plant secondary growth is derived from cambium meristem cells in the vascular and cork cambia and leads to the girth increase of the plant trunk. In the secondary growth process, plants convert most of photosynthesized products into various biopolymers for use in the formation of woody tissues. This article summarizes the new developments of genomic and genetic characterization of wood formation in herbaceous model plant and tree plant systems. Genomic studies have categorized a collection of the genes for which expression is associated with secondary growth. During wood formation, the expression of many genes is regulated in a stage-specific manner. The function of many genes involved in wood biosyntheses and xylem differentiation has been characterized. Although great progress has been achieved in the molecular and genomic understanding of plant secondary growth in recent years, the profound genetic mechanisms underlying this plant development remain to be investigated. Completion of the first tree genome sequence ( Populus genome) provides a valuable genomic resource for characterization of plant secondary growth.
机译：木材形成是源自植物次生生长的过程。与初级生长不同，植物的次级生长源自血管和软木坎比亚中的形成分生组织细胞，导致植物树干的周长增加。在次级生长过程中，植物将大多数光合作用产物转化为各种生物聚合物，以形成木质组织。本文总结了草本模型植物和树木植物系统中木材形成的基因组学和遗传学表征的新进展。基因组研究已将其表达与次级生长相关的基因分类。在木材形成过程中，许多基因的表达以阶段特定的方式调节。已经描述了许多涉及木材生物合成和木质部分化的基因的功能。尽管近年来在对植物次生生长的分子和基因组学理解上已取得了很大进展，但该植物发育的深层遗传机制仍有待研究。第一棵树基因组序列（胡杨基因组）的完成为表征植物次生生长提供了宝贵的基因组资源。

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