Phloem and xylem specification: pieces of the puzzle emerge

被引:67
作者
Carlsbecker, A
Helariutta, Y
机构
[1] Univ Helsinki, Inst Biotechnol, FI-00014 Helsinki, Finland
[2] Univ Turku, Dept Biol, FI-20014 Turku, Finland
[3] Swedish Univ Agr Sci, Umea Plant Sci Ctr, Dept Forest Genet & Plant Physiol, SE-90183 Umea, Sweden
基金
芬兰科学院;
关键词
D O I
10.1016/j.pbi.2005.07.001
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The plant vascular system is composed of two tissue types, xylem and phloem, which originate from the vascular meristem, the procambium. Recently, several regulatory mechanisms that control the specification of these two tissue types have been uncovered. These include the asymmetric patterning of xylem and phloem in the vascular bundle by the class III HD-ZIP and KANADI genes, the tissue-type-specific control of vascular cell proliferation by brassinosteroids and class III HD-ZIP genes, the regulation of vascular tissue identity by the MYB-like transcription factor APL, and inductive signalling during xylem differentiation by xylogen. These findings define an emerging developmental framework for the control of vascular tissue specification.
引用
收藏
页码:512 / 517
页数:6
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