Auxin gradients trigger de novo formation of stem cells during somatic embryogenesis

被引：49
作者：
Su, Ying Hua [1 ]
Zhang, Xian Sheng [1 ]
机构：
[1] Shandong Agr Univ, Coll Life Sci, State Key Lab Crop Biol, Tai An 271018, Shandong, Peoples R China
来源：
PLANT SIGNALING & BEHAVIOR | 2009年 / 4卷 / 07期
关键词：
auxin gradients; PIN proteins; stem cell; somatic embryogenesis;
D O I：
10.4161/psb.4.7.8730
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Single or a group of somatic cells could give rise to the whole plant, which require hormones, or plant growth regulators. Although many studies have been done during past years, how hormones specify cell fate during in vitro organogenesis is still unknown. To uncover this mechanism, Arabidopsis somatic embryogenesis has been recognized as a model for studying in vitro plant organogenesis. In this paper, we showed that establishment of auxin gradients within embryonic callus is essential for inducing stem cell formation via PIN1 regulation. This study sheds new light on how hormone regulates stem cell formation during in vitro organogenesis.
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收藏
页码：574 / 576
页数：3
相关论文
共 21 条
[1]   Local, efflux-dependent auxin gradients as a common module for plant organ formation [J].
Benková, E ;
Michniewicz, M ;
Sauer, M ;
Teichmann, T ;
Seifertová, D ;
Jürgens, G ;
Friml, J .
CELL, 2003, 115 (05) :591-602
[2]   The PIN auxin efflux facilitator network controls growth and patterning in Arabidopsis roots [J].
Blilou, I ;
Xu, J ;
Wildwater, M ;
Willemsen, V ;
Paponov, I ;
Friml, J ;
Heidstra, R ;
Aida, M ;
Palme, K ;
Scheres, B .
NATURE, 2005, 433 (7021) :39-44
[3]   Signaling of cell fate decisions by CLAVATA3 in Arabidopsis shoot meristems [J].
Fletcher, LC ;
Brand, U ;
Running, MP ;
Simon, R ;
Meyerowitz, EM .
SCIENCE, 1999, 283 (5409) :1911-1914
[4]   Efflux-dependent auxin gradients establish the apical-basal axis of Arabidopsis [J].
Friml, J ;
Vieten, A ;
Sauer, M ;
Weijers, D ;
Schwarz, H ;
Hamann, T ;
Offringa, R ;
Jürgens, G .
NATURE, 2003, 426 (6963) :147-153
[5]   Pattern formation during de novo assembly of the Arabidopsis shoot meristem [J].
Gordon, Sean P. ;
Heisler, Marcus G. ;
Reddy, G. Venugopala ;
Ohno, Carolyn ;
Das, Pradeep ;
Meyerowitz, Elliot M. .
DEVELOPMENT, 2007, 134 (19) :3539-3548
[6]   Patterns of auxin transport and gene expression during primordium development revealed by live imaging of the Arabidopsis inflorescence meristem [J].
Heisler, MG ;
Ohno, C ;
Das, P ;
Sieber, P ;
Reddy, GV ;
Long, JA ;
Meyerowitz, EM .
CURRENT BIOLOGY, 2005, 15 (21) :1899-1911
[7]   Embryonic Patterning in Arabidopsis thaliana [J].
Jenik, Pablo D. ;
Gillmor, C. Stewart ;
Lukowitz, Wolfgang .
ANNUAL REVIEW OF CELL AND DEVELOPMENTAL BIOLOGY, 2007, 23 :207-236
[8]  
Laux T, 1996, DEVELOPMENT, V122, P87
[9]  
LIU CM, 1993, PLANT CELL, V5, P621, DOI 10.1105/tpc.5.6.621
[10]   Role of WUSCHEL in regulating stem cell fate in the Arabidopsis shoot meristem [J].
Mayer, KFX ;
Schoof, H ;
Haecker, A ;
Lenhard, M ;
Jürgens, G ;
Laux, T .
CELL, 1998, 95 (06) :805-815
123