Auxin: at the root of nodule development?

被引:98
作者
Mathesius, Ulrike [1 ,2 ]
机构
[1] Australian Natl Univ, Sch Biochem & Mol Biol, Canberra, ACT 0200, Australia
[2] Australian Res Council, Ctr Excellence Integrat Legume Res, Canberra, ACT 0200, Australia
基金
澳大利亚研究理事会;
关键词
actinomycetes; auxin transport; cytokinin; flavonoids; lateral root; rhizobia; symbiosis;
D O I
10.1071/FP08177
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Root nodules are formed as a result of an orchestrated exchange of chemical signals between symbiotic nitrogen. xing bacteria and certain plants. In plants that form nodules in symbiosis with actinorhizal bacteria, nodules are derived from lateral roots. In most legumes, nodules are formed de novo from pericycle and cortical cells that are re-stimulated for division and differentiation by rhizobia. The ability of plants to nodulate has only evolved recently and it has, therefore, been suggested that nodule development is likely to have co-opted existing mechanisms for development and differentiation from lateral root formation. Auxin is an important regulator of cell division and differentiation, and changes in auxin accumulation and transport are essential for lateral root development. There is growing evidence that rhizobia alter the root auxin balance as a prerequisite for nodule formation, and that nodule numbers are regulated by shoot-to-root auxin transport. Whereas auxin requirements appear to be similar for lateral root and nodule primordium activation and organ differentiation, the major difference between the two developmental programs lies in the specification of founder cells. It is suggested that differing ratios of auxin and cytokinin are likely to specify the precursors of the different root organs.
引用
收藏
页码:651 / 668
页数:18
相关论文
共 172 条
[1]   PSEUDONODULATION OF LEGUMINOUS PLANTS INDUCED BY 2-BROMO-3,5-DICHLOROBENZOIC ACID [J].
ALLEN, EK ;
ALLEN, ON ;
NEWMAN, AS .
AMERICAN JOURNAL OF BOTANY, 1953, 40 (06) :429-435
[2]  
ALLEN O. N., 1940, Botanical Gazette, V102, P121, DOI 10.1086/334940
[3]   Role of cytokinin and auxin in shaping root architecture: Regulating vascular differentiation, lateral root initiation, root apical dominance and root gravitropism [J].
Aloni, R ;
Aloni, E ;
Langhans, M ;
Ullrich, CI .
ANNALS OF BOTANY, 2006, 97 (05) :883-893
[4]   Receptors for auxin: will it all end in TIRs? [J].
Badescu, George O. ;
Napier, Richard M. .
TRENDS IN PLANT SCIENCE, 2006, 11 (05) :217-223
[5]   The peri-cell-cycle in Arabidopsis [J].
Beeckman, T ;
Burssens, S ;
Inzé, D .
JOURNAL OF EXPERIMENTAL BOTANY, 2001, 52 :403-411
[6]  
Benjamins R, 2001, DEVELOPMENT, V128, P4057
[7]   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
[8]   Effect of synthetic and natural protein tyrosine kinase inhibitors on auxin efflux in zucchini (Cucurbita pepo) hypocotyls [J].
Bernasconi, P .
PHYSIOLOGIA PLANTARUM, 1996, 96 (02) :205-210
[9]   Shoot-derived auxin is essential for early lateral root emergence in Arabidopsis seedlings [J].
Bhalerao, RP ;
Eklöf, J ;
Ljung, K ;
Marchant, A ;
Bennett, M ;
Sandberg, G .
PLANT JOURNAL, 2002, 29 (03) :325-332
[10]   TRANSIENT SUSCEPTIBILITY OF ROOT-CELLS IN 4 COMMON LEGUMES TO NODULATION BY RHIZOBIA [J].
BHUVANESWARI, TV ;
BHAGWAT, AA ;
BAUER, WD .
PLANT PHYSIOLOGY, 1981, 68 (05) :1144-1149