Cytokinin-auxin crosstalk in cell type specification

被引：97

作者：

Chandler, John William ^{[1
]}

Werr, Wolfgang ^{[1
]}

机构：

[1] Cologne Bioctr, Inst Dev Biol, D-50674 Cologne, Germany

来源：

TRENDS IN PLANT SCIENCE | 2015年 / 20卷 / 05期

关键词：

founder cell specification; auxin; cytokinin; crosstalk; ARABIDOPSIS; HISTIDINE PHOSPHOTRANSFER PROTEIN 6; MONOPTEROS/BODENLOS; ARR7; ARR15; LATERAL ROOT INITIATION; YUCCA FLAVIN MONOOXYGENASES; ARABIDOPSIS ROOT; SIGNALING NETWORK; APICAL MERISTEM; FOUNDER CELLS; TRANSCRIPTIONAL REGULATION; SPATIOTEMPORAL REGULATION; VASCULAR DEVELOPMENT; PLANT ORGANOGENESIS;

D O I：

10.1016/j.tplants.2015.02.003

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Auxin and cytokinin affect cell fate specification transcriptionally and non-transcriptionally, and their roles have been characterised in several founder cell specification and activation contexts. Similarly to auxin, local cytokinin synthesis and response gradients are instructive, and the roles of ARABIDOPSIS RESPONSE REGULATOR 7/15 (ARR7/15) and the negative cytokinin response regulator ARABIDOPSIS HISTIDINE PHOSPHO-TRANSFER PROTEIN 6, as well as auxin signalling via MONOPTEROS/BODENLOS, are functionally conserved across different developmental processes. Auxin and cytokinin crosstalk is tissue- and context-specific, and may be synergistic in the shoot apical meristem (SAM) but antagonistic in the root. We review recent advances in understanding the interactions between auxin and cytokinin in pivotal developmental processes, and show that feedback complexity and the multistep nature of specification processes argue against a single morphogenetic signal.

引用

页码：291 / 300

页数：10

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