The rice HIGH-TILLERING DWARF1 encoding an ortholog of Arabidopsis MAX3 is required for negative regulation of the outgrowth of axillary buds

被引:402
作者
Zou, Junhuang
Zhang, Shuying
Zhang, Weiping
Li, Gang
Chen, Zongxiang
Zhai, Wenxue
Zhao, Xianfeng
Pan, Xuebiao
Xie, Qi
Zhu, Lihuang [1 ]
机构
[1] Chinese Acad Sci, State Key Lab Plant Genom, Beijing 100101, Peoples R China
[2] Chinese Acad Sci, Natl Ctr Plant Gene Res, Inst Genet & Dev Biol, Beijing 100101, Peoples R China
[3] Yangzhou Univ, Dept Agron, Yangzhou 225009, Peoples R China
[4] Chinese Acad Sci, Grad Sch, Beijing 100101, Peoples R China
关键词
HTD1; MAX3; carotenoid-derived signal; tillering; dwarf; rice;
D O I
10.1111/j.1365-313X.2006.02916.x
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Rice tillering is an important agronomic trait for grain production. The HIGH-TILLERING DWARF1 (HTD1) gene encodes an ortholog of Arabidopsis MAX3. Complementation analyses for HTD1 confirm that the defect in HTD1 is responsible for both high-tillering and dwarf phenotypes in the htd1 mutant. The rescue of the Arabidopsis max3 mutant phenotype by the introduction of Pro(35S):HTD1 indicates HTD1 is a carotenoid cleavage dioxygenase that has the same function as MAX3 in synthesis of a carotenoid-derived signal molecule. The HTD1 gene is expressed in both shoot and root tissues. By evaluating Pro(HTD1):GUS expression, we found that the HTD1 gene is mainly expressed in vascular bundle tissues throughout the plant. Auxin induction of HTD1 expression suggests that auxin may regulate rice tillering partly through upregulation of HTD1 gene transcription. Restoration of dwarf phenotype after the removal of axillary buds indicates that the dwarfism of the htd1 mutant may be a consequence of excessive tiller production. In addition, the expression of HTD1, D3 and OsCCD8a in the htd1 and d3 mutants suggests a feedback mechanism may exist for the synthesis and perception of the carotenoid-derived signal in rice. Characterization of MAX genes in Arabidopsis, and identification of their orthologs in pea, petunia and rice indicates the existence of a conserved mechanism for shoot-branching regulation in both monocots and dicots.
引用
收藏
页码:687 / 696
页数:10
相关论文
共 64 条
[31]   Shoot branching [J].
McSteen, P ;
Leyser, O .
ANNUAL REVIEW OF PLANT BIOLOGY, 2005, 56 :353-374
[32]  
MEDFORD JI, 1989, PLANT CELL, V1, P403, DOI 10.1105/tpc.1.4.403
[33]   Mutational analysis of branching in pea.: Evidence that Rms1 and Rms5 regulate the same novel signal [J].
Morris, SE ;
Turnbull, CGN ;
Murfet, IC ;
Beveridge, CA .
PLANT PHYSIOLOGY, 2001, 126 (03) :1205-1213
[34]   Highly branched phenotype of the petunia dad1-1 mutant is reversed by grafting [J].
Napoli, C .
PLANT PHYSIOLOGY, 1996, 111 (01) :27-37
[35]  
OKADA K, 1991, PLANT CELL, V3, P677, DOI 10.1105/tpc.3.7.677
[36]   Gibberellin signaling: Biosynthesis, catabolism, and response pathways [J].
Olszewski, N ;
Sun, TP ;
Gubler, F .
PLANT CELL, 2002, 14 :S61-S80
[37]   APICAL DOMINANCE IN VICIA FABA [J].
PANIGRAHI, BM ;
AUDUS, LJ .
ANNALS OF BOTANY, 1966, 30 (119) :457-+
[38]   Sugar control of the plant cell cycle:: Differential regulation of Arabidopsis D-type cyclin gene expression [J].
Riou-Khamlichi, C ;
Menges, M ;
Healy, JMS ;
Murray, JAH .
MOLECULAR AND CELLULAR BIOLOGY, 2000, 20 (13) :4513-4521
[39]   Cytokinin activation of Arabidopsis cell division through a D-type cyclin [J].
Riou-Khamlichi, C ;
Huntley, R ;
Jacqmard, A ;
Murray, JAH .
SCIENCE, 1999, 283 (5407) :1541-1544
[40]   INACTIVATION OF AUXIN IN TOBACCO TRANSFORMED WITH THE INDOLEACETIC-ACID LYSINE SYNTHETASE GENE OF PSEUDOMONAS-SAVASTANOI [J].
ROMANO, CP ;
HEIN, MB ;
KLEE, HJ .
GENES & DEVELOPMENT, 1991, 5 (03) :438-446