Ethylene upregulates auxin biosynthesis in Arabidopsis seedlings to enhance inhibition of root cell elongation

被引:461
作者
Swarup, Ranjan
Perry, Paula
Hagenbeek, Dik
Van Der Straeten, Dominique
Beemster, Gerrit T. S.
Sandberg, Goran
Bhalerao, Rishikesh
Ljung, Karin
Bennett, Malcolm J. [1 ]
机构
[1] Univ Nottingham, Sch Biosci, Loughborough LE12 5RD, Leics, England
[2] Univ Nottingham, Ctr Plant Integrat Biol, Loughborough LE12 5RD, Leics, England
[3] Univ Ghent VIB, Dept Plant Syst Biol, B-9052 Ghent, Belgium
[4] Univ Ghent, Dept Mol Genet, B-9052 Ghent, Belgium
[5] Univ Ghent, Plant Hormone Signaling & Bioimaging, Dept Mol Genet, B-9000 Ghent, Belgium
[6] Umea Univ, Umea Plant Sci Ctr, Dept Plant Physiol, SE-90187 Umea, Sweden
[7] Umea Plant Sci Ctr, Dept Forest Genet & Plant Physiol, SE-90183 Umea, Sweden
基金
英国生物技术与生命科学研究理事会;
关键词
RESPONSE PATHWAY; INSENSITIVE MUTANTS; POSITIVE REGULATOR; TRANSPORT; GROWTH; GENE; LOCALIZATION; GRAVITROPISM; THALIANA; ACCELERATION;
D O I
10.1105/tpc.107.052100
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
Ethylene represents an important regulatory signal for root development. Genetic studies in Arabidopsis thaliana have demonstrated that ethylene inhibition of root growth involves another hormone signal, auxin. This study investigated why auxin was required by ethylene to regulate root growth. We initially observed that ethylene positively controls auxin biosynthesis in the root apex. We subsequently demonstrated that ethylene-regulated root growth is dependent on ( 1) the transport of auxin from the root apex via the lateral root cap and ( 2) auxin responses occurring in multiple elongation zone tissues. Detailed growth studies revealed that the ability of the ethylene precursor 1-aminocyclopropane-1-carboxylic acid to inhibit root cell elongation was significantly enhanced in the presence of auxin. We conclude that by upregulating auxin biosynthesis, ethylene facilitates its ability to inhibit root cell expansion.
引用
收藏
页码:2186 / 2196
页数:11
相关论文
共 45 条
[1]   A POLYMORPHIC BIPARTITE MOTIF SIGNALS NUCLEAR TARGETING OF EARLY AUXIN-INDUCIBLE PROTEINS RELATED TO PS-IAA4 FROM PEA (PISUM-SATIVUM) [J].
ABEL, S ;
THEOLOGIS, A .
PLANT JOURNAL, 1995, 8 (01) :87-96
[2]   The ethylene signaling pathway [J].
Alonso, JM ;
Stepanova, AN .
SCIENCE, 2004, 306 (5701) :1513-1515
[3]   Five components of the ethylene-response pathway identified in a screen for weak ethylene-insensitive mutants in Arabidopsis [J].
Alonso, JM ;
Stepanova, AN ;
Solano, R ;
Wisman, E ;
Ferrari, S ;
Ausubel, FM ;
Ecker, JR .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2003, 100 (05) :2992-2997
[4]   STUNTED PLANT 1 mediates effects of cytokinin, but not of auxin, on cell division and expansion in the root of arabidopsis [J].
Beemster, GTS ;
Baskin, TI .
PLANT PHYSIOLOGY, 2000, 124 (04) :1718-1727
[5]   Analysis of cell division and elongation underlying the developmental acceleration of root growth in Arabidopsis thaliana [J].
Beemster, GTS ;
Baskin, TI .
PLANT PHYSIOLOGY, 1998, 116 (04) :1515-1526
[6]   Race to displace Taxol [J].
Bradley, D .
DRUG DISCOVERY TODAY, 1997, 2 (03) :87-88
[7]   ARABIDOPSIS ETHYLENE-RESPONSE GENE ETR1 - SIMILARITY OF PRODUCT TO 2-COMPONENT REGULATORS [J].
CHANG, C ;
KWOK, SF ;
BLEECKER, AB ;
MEYEROWITZ, EM .
SCIENCE, 1993, 262 (5133) :539-544
[8]   The POLARIS peptide of Arabidopsis regulates auxin transport and root growth via effects on ethylene signaling [J].
Chilley, Paul M. ;
Casson, Stuart A. ;
Tarkowski, Petr ;
Hawkins, Nathan ;
Wang, Kevin L. -C. ;
Hussey, Patrick J. ;
Beale, Mike ;
Ecker, Joseph R. ;
Sandberg, Goran K. ;
Lindsey, Keith .
PLANT CELL, 2006, 18 (11) :3058-3072
[9]   Root formation in ethylene-insensitive plants [J].
Clark, DG ;
Gubrium, EK ;
Barrett, JE ;
Nell, TA ;
Klee, HJ .
PLANT PHYSIOLOGY, 1999, 121 (01) :53-59
[10]   Association of the Arabidopsis CTR1 Raf-like kinase with the ETR1 and ERS ethylene receptors [J].
Clark, KL ;
Larsen, PB ;
Wang, XX ;
Chang, C .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1998, 95 (09) :5401-5406