PLANT DEVELOPMENT Integration of growth and patterning during vascular tissue formation in Arabidopsis

被引：248

作者：

De Rybel, Bert ^{[1
]}

Adibi, Milad ^{[2
,3
,4
]}

Breda, Alice S. ^{[1
]}

Wendrich, Jos R. ^{[1
]}

Smit, Margot E. ^{[1
]}

Novak, Ondrej ^{[5
,6
,7
]}

Yamaguchi, Nobutoshi ^{[8
]}

Yoshida, Saiko ^{[1
]}

Van Isterdael, Gert ^{[9
,10
]}

Palovaara, Joakim ^{[1
]}

Nijsse, Bart ^{[4
]}

Boekschoten, Mark V. ^{[11
,12
]}

Hooiveld, Guido ^{[11
]}

Beeckman, Tom ^{[9
,10
]}

Wagner, Doris ^{[8
]}

Ljung, Karin ^{[5
]}

Fleck, Christian ^{[4
]}

Weijers, Dolf ^{[1
]}

机构：

[1] Wageningen Univ, Biochem Lab, NL-6703 HA Wageningen, Netherlands

[2] LifeGlimmer GmbH, D-12163 Berlin, Germany

[3] Univ Freiburg, Fac Biol, D-79104 Freiburg, Germany

[4] Wageningen Univ, Lab Syst & Synthet Biol, NL-6703 HA Wageningen, Netherlands

[5] SLU, Dept Forest Genet & Plant Physiol, Ume Plant Sci Ctr UPSC, SE-90183 Umea, Sweden

[6] Palacky Univ, Lab Growth Regulators, Ctr Reg Hana Biotechnol & Agr Res, CZ-78371 Olomouc, Czech Republic

[7] Inst Expt Bot AS CR, CZ-78371 Olomouc, Czech Republic

[8] Univ Penn, Dept Biol, Philadelphia, PA USA

[9] Univ Ghent VIB, Dept Plant Syst Biol, B-9052 Ghent, Belgium

[10] Univ Ghent, Dept Plant Biotechnol & Bioinformat, B-9052 Ghent, Belgium

[11] Wageningen Univ, Div Human Nutr, NL-6703 HA Wageningen, Netherlands

[12] TI Food & Nutr, NL-6703 HA Wageningen, Netherlands

来源：

SCIENCE | 2014年 / 345卷 / 6197期

基金：

欧洲研究理事会; 美国国家科学基金会;

关键词：

DEPENDENT AUXIN GRADIENTS; SOLID-PHASE EXTRACTION; SHOOT APICAL MERISTEM; TRANSCRIPTION FACTOR; ROOT; CYTOKININS; PURIFICATION; EXPRESSION; TRANSPORT; GENES;

D O I：

10.1126/science.1255215

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Coordination of cell division and pattern formation is central to tissue and organ development, particularly in plants where walls prevent cell migration. Auxin and cytokinin are both critical for division and patterning, but it is unknown how these hormones converge upon tissue development. We identify a genetic network that reinforces an early embryonic bias in auxin distribution to create a local, nonresponding cytokinin source within the root vascular tissue. Experimental and theoretical evidence shows that these cells act as a tissue organizer by positioning the domain of oriented cell divisions. We further demonstrate that the auxin-cytokinin interaction acts as a spatial incoherent feed-forward loop, which is essential to generate distinct hormonal response zones, thus establishing a stable pattern within a growing vascular tissue.

引用

页数：8

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