Dissecting Arabidopsis lateral root development

被引:521
作者
Casimiro, I
Beeckman, T
Graham, N
Bhalerao, R
Zhang, HM
Casero, P
Sandberg, G
Bennett, MJ
机构
[1] Univ Nottingham, Div Plant Sci, Sch Biosci, Loughborough LE12 5RD, Leics, England
[2] Univ Extremadura, Dept Ciencias Morfolog & Biol, E-06071 Badajoz, Spain
[3] Univ Ghent, Dept Genet, B-9000 Ghent, Belgium
[4] Swedish Univ Agr Sci, Dept Forest Genet & Plant Physiol, S-90183 Umea, Sweden
[5] Univ Leeds, Ctr Plant Sci, Sch Biol, Leeds LS2 9JT, W Yorkshire, England
基金
英国生物技术与生命科学研究理事会;
关键词
D O I
10.1016/S1360-1385(03)00051-7
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Recent studies in the model plant Arabidopsis provide new insight into the regulation of root architecture, a key determinant of nutrient- and water-use efficiency in crops. Lateral root (LR) primordia originate from a subset of pericycle founder cells. Sophisticated mass-spectroscopy-based techniques have been used to map the sites of biosynthesis of auxin and its distribution in Arabidopsis seedlings, highlighting the importance of the phytohormone during LR initiation and emergence. Key components of the cell cycle and signal-transduction pathway(s) that promote and attenuate auxin-dependent LR initiation have recently been identified. Additional signals, such as abscisic acid and nitrate, also regulate LR emergence, raising intriguing questions about the cross-talk between their transduction pathways.
引用
收藏
页码:165 / 171
页数:7
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