NAA restores apical dominance in the axr3-1 mutant of Arabidopsis thaliana

被引:29
作者
Cline, MG
Chatfield, SP
Leyser, O
机构
[1] Ohio State Univ, Dept Plant Biol, Columbus, OH 43210 USA
[2] Univ York, Dept Biol, York YO10 5YW, N Yorkshire, England
关键词
Arabidopsis thaliana; axr3-1; auxin; naphthaleneacetic acid; apical dominance; lateral bud; decapitated shoot;
D O I
10.1006/anbo.2000.1298
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Strong evidence for a role of auxin in apical dominance is provided by the classic Thimann-Skoog experiment (Proceedings of the National Academy of Sciences, USA 19: 714-716, 1933) wherein exogenous auxin applied to a decapitated shoot represses outgrowth of the next lower lateral bud. Although apical dominance in most herbaceous species can be restored by this auxin treatment, such is not the case with wild-type Arabidopsis thaliana. In the present study, it has been demonstrated that apical dominance can be partially or fully restored with exogenous auxin (1 % naphthaleneacetic acid, NAA) applied to the decapitated shoot of the axr3-1 mutant which is thought to be hypersensitive to auxin. A similar repressive response to auxin (1 muM NAA) was also shown in an in vitro assay with detached nodes. The role of AXR3 as a gene mediating auxin response is thus supported. (C) 2000 Annals of Botany Company.
引用
收藏
页码:61 / 65
页数:5
相关论文
共 25 条
[11]   Function of the ubiquitin-proteosome pathway in auxin response [J].
del Pozo, JC ;
Estelle, M .
TRENDS IN PLANT SCIENCE, 1999, 4 (03) :107-112
[12]   The ubiquitin-related protein RUB1 and auxin response in Arabidopsis [J].
del Pozo, JC ;
Timpte, C ;
Tan, S ;
Callis, J ;
Estelle, M .
SCIENCE, 1998, 280 (5370) :1760-1763
[13]  
DELBARRE A, 1994, PLANTA, V195, P159, DOI 10.1007/BF00199674
[14]   Inhibitors of the carrier-mediated influx of auxin in suspension-cultured tobacco cells [J].
Imhoff, V ;
Muller, P ;
Guern, J ;
Delbarre, A .
PLANTA, 2000, 210 (04) :580-588
[15]   Mutations in the AXR3 gene of Arabidopsis result in altered auxin response including ectopic expression from the SAUR-AC1 promoter [J].
Leyser, HMO ;
Pickett, FB ;
Dharmasiri, S ;
Estelle, M .
PLANT JOURNAL, 1996, 10 (03) :403-413
[16]   ARABIDOPSIS AUXIN-RESISTANCE GENE-AXR1 ENCODES A PROTEIN RELATED TO UBIQUITIN-ACTIVATING ENZYME-E1 [J].
LEYSER, HMO ;
LINCOLN, CA ;
TIMPTE, C ;
LAMMER, D ;
TURNER, J ;
ESTELLE, M .
NATURE, 1993, 364 (6433) :161-164
[17]   GROWTH AND DEVELOPMENT OF THE AXR1 MUTANTS OF ARABIDOPSIS [J].
LINCOLN, C ;
BRITTON, JH ;
ESTELLE, M .
PLANT CELL, 1990, 2 (11) :1071-1080
[18]  
Napoli CA, 1999, CURR TOP DEV BIOL, V44, P127
[19]  
ROMANO CP, 1993, PLANT CELL, V5, P181, DOI 10.1105/tpc.5.2.181
[20]   Changes in auxin response from mutations in an AUX/IAA gene [J].
Rouse, D ;
Mackay, P ;
Stirnberg, P ;
Estelle, M ;
Leyser, O .
SCIENCE, 1998, 279 (5355) :1371-1373