The role of hormones in shoot apical meristem function
KNOTTED1-like homeobox (KNOX) and WUSCHEL (WUS) transcription factors facilitate high cytokinin activity in the shoot apical meristem (SAM), whereas high gibberellin and auxin activities promote the initiation of lateral organs at specific sites in the SAM flanks.
Understanding the shoot apical meristem regulation: A study …
2015年2月1日 · The aboveground plant organs are created by the shoot apical meristem (SAM). It has been proposed that the phytohormone, cytokinin, plays a positive role in the shoot meristem function, promotes cell expansion and promotes an increasing size of the meristem in Arabidopsis, whereas it has the reverse effects in the root apical meristem (RAM ...
Auxin–Cytokinin Interaction Regulates Meristem Development
2011年7月1日 · These results also suggest that auxin and cytokinin signaling converge on ARR7 and ARR15 in the central zone of meristem during the development of shoot apical meristem (Figure 2A). In contrast to cytokinin, auxin accumulates at a relatively high level in the peripheral zone of the shoot meristem to trigger organ initiation ( Benková et al ...
Hormone interactions at the root apical meristem - PubMed
In this review, we will summarize recent knowledge on hormonal networks that regulate the development and growth of root with focus on the hormonal interactions that shape the root apical meristem.
Lonely at the top? Regulation of shoot apical meristem activity by ...
In addition to regulating lateral organ development, MpLOS1 non-cell autonomously promotes apical meristem maintenance. ALOG function appears to be conserved through land plant evolution, as MpLOS1 is able to rescue loss-of G1 in rice.
Hormone interactions at the root apical meristem
2008年9月19日 · In the shoot apical meristem KNOTTED-like homeobox genes were shown to play an important role in the establishment of the hormonal balance between CK and GA. They activate CK biosynthesis and repress GA 20-oxidase gene expression and, hence, GA biosynthesis, thus promoting meristem activity (Jasinski et al. 2005 ; Yanai et al. 2005 ).
Hormone mediated regulation of the shoot apical meristem
2008年9月17日 · Recent work on hormone mediated regulation of the SAM is reviewed, emphasizing how combinations of genetic, molecular and modelling approaches have refined models based on classic experimental and physiological work.
Systems Analysis of Shoot Apical Meristem Growth and …
2012年10月30日 · The shoot apical meristem (SAM) is a small population of stem cells that continuously generates organs and tissues. This review covers our current understanding of organ initiation by the SAM in Arabidopsis thaliana. Meristem function and maintenance involves two major hormones, cytokinins and auxins.
The role of hormones in shoot apical meristem function
2006年10月1日 · KNOTTED1-like homeobox (KNOX) and WUSCHEL (WUS) transcription factors facilitate high cytokinin activity in the shoot apical meristem (SAM), whereas high gibberellin and auxin activities promote the initiation of lateral organs at specific sites in the SAM flanks.
Hormonal control of the shoot stem-cell niche | Nature
2010年6月24日 · Our results provide a mechanistic framework for hormonal control of the apical stem-cell niche and demonstrate how root and shoot stem-cell systems differ in their response to phytohormones.