Molecular Genetics of Rice Root Development

作者：Julia Rebouillat, Anne Diévart, Jean‐Luc Verdeil, Jacques Escoute, G. Giese, Jean‐Christophe Breitler, Pascal Gantet, Sandra Espéout, Emmanuel Guiderdoni, Christophe Périn · 发表于：Rice · 年份：2008 · DOI：10.1007/s12284-008-9016-5 · 被引用次数：264 · 研究领域：Plant nutrient uptake and metabolism、Plant responses to water stress、Rice Cultivation and Yield Improvement

Abstract Plant roots have a large range of functions, including acquisition of water and nutrients, as well as structural support. Dissecting the genetic and molecular mechanisms controlling rice root development is critical for the development of new rice ideotypes that are better adapted to adverse conditions and for the production of sustainably achieved rice yield potential. Most knowledge regarding the gene networks involved in root development has been accumulated in the model dicotyledon plant speciesArabidopsis thaliana. Rice, the model monocotyledon species, presents several singularities compared toA. thaliana, including a root architecture characterized by a fibrous root system comprising five types of embryonic and postembryonic roots. The anatomy and morphology of the rice root system, which is typical for a cereal, differs from that ofA. thaliana, for instance, by the presence of a lysigenous cortex and additional cell layers compared to the dicotyledon model. Moreover, the structure and functions of the root apical meristem (RAM) of rice are distinct from those ofA. thaliana. Recently, several rice root mutants have been identified via forward or reverse genetics, and these will aid in forming hypothesis to characterize either the divergence or conservation of genetic pathways relative toA. thaliana. Furthermore, these mutants will help to identify key genes in rice roots that may be missing inA. thaliana. This review summarizes both classical and recent data c...