The Dynamics of Cambial Stem Cell Activity

被引:131
|
作者
Fischer, Urs [1 ,2 ]
Kucukoglu, Melis [3 ,4 ]
Helariutta, Yka [3 ,4 ,5 ]
Bhalerao, Rishikesh P. [2 ,6 ]
机构
[1] KWS SAAT SE, D-37555 Einbeck, Germany
[2] Swedish Univ Agr Sci, Umea Plant Sci Ctr, Dept Forest Genet & Plant Physiol, S-90183 Umea, Sweden
[3] Univ Helsinki, Inst Biotechnol, Helsinki Inst Life Sci, FIN-00014 Helsinki, Finland
[4] Univ Helsinki, Organismal & Evolutionary Biol Res Programme, Fac Biol & Environm Sci, Viikki Plant Sci Ctr, FIN-00014 Helsinki, Finland
[5] Univ Cambridge, Sainsbury Lab, Cambridge CB2 1LR, England
[6] Beijing Forestry Univ, Beijing Adv Innovat Ctr Tree Breeding Mol Design, Beijing 100083, Peoples R China
来源
ANNUAL REVIEW OF PLANT BIOLOGY, VOL 70 | 2019年 / 70卷
基金
英国生物技术与生命科学研究理事会;
关键词
vascular cambium; stem cells; auxin; cytokinin; gibberellin; peptides; AUXIN POLAR TRANSPORT; BOX PROTEIN TIR1; SECONDARY GROWTH; WOOD FORMATION; TENSION WOOD; RECEPTOR KINASE; JUVENILE WOOD; HYBRID ASPEN; CLE PEPTIDES; ARABIDOPSIS;
D O I
10.1146/annurev-arplant-050718-100402
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Stem cell populations in meristematic tissues at distinct locations in the plant body provide the potency of continuous plant growth. Primary meristems, at the apices of the plant body, contribute mainly to the elongation of the main plant axes, whereas secondary meristems in lateral positions are responsible for the thickening of these axes. The stem cells of the vascular cambium-a secondary lateral meristem-produce the secondary phloem (bast) and secondary xylem (wood). The sites of primary and secondary growth are spatially separated, and mobile signals are expected to coordinate growth rates between apical and lateral stem cell populations. Although the underlying mechanisms have not yet been uncovered, it seems likely that hormones, peptides, and mechanical cues orchestrate primary and secondary growth. In this review, we highlight the current knowledge and recent discoveries of how cambial stem cell activity is regulated, with a focus on mobile signals and the response of cambial activity to environmental and stress factors.
引用
收藏
页码:293 / 319
页数:27
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