title: Definition and stabilisation of the quiescent centre in rice roots.
abstract: The definition of a quiescent centre (QC) in Arabidopsis has been adequately demonstrated. However, the QC structure of rice has not yet been described in detail. In this research, using histological and marker gene expression analysis, we concluded that the rice QC is very small, and is similar to that of Arabidopsis. Next we investigated the stability of the rice QC during nutrient deficiencies or external hormone treatments, and found that nutrient deficiencies, auxin treatment and cytokinin treatment did not change the cell patterns of the QC. However, ethylene induced irregular transverse cell divisions in the QC and changed formative cell divisions of the ground tissue stem cells (GTSCs) in rice.
authors.affiliation: College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China; State Key Laboratory of Plant Physiology and Biochemistry, College of Life Science, Zhejiang University, Hangzhou, China.
authors.forename: J
authors.initials: J
authors.lastname: Ni
authors.forename: Y
authors.initials: Y
authors.lastname: Shen
authors.forename: Y
authors.initials: Y
authors.lastname: Zhang
authors.forename: P
authors.initials: P
authors.lastname: Wu
mesh_terms: D017360:Arabidopsis / Q000166:cytology / Q000502:physiology; D002455:Cell Division / Q000187:drug effects; D003583:Cytokinins / Q000494:pharmacology; D005030:Ethylenes / Q000494:pharmacology; D020869:Gene Expression Profiling; D005819:Genetic Markers; D007210:Indoleacetic Acids / Q000494:pharmacology; D018519:Meristem / Q000166:cytology / Q000187:drug effects / Q000502:physiology; D012275:Oryza / Q000166:cytology* / Q000187:drug effects / Q000502:physiology; D010937:Plant Growth Regulators / Q000494:pharmacology; D013315:Stress, Psychological
chemical_list: D003583:Cytokinins; D005030:Ethylenes; D005819:Genetic Markers; D007210:Indoleacetic Acids; D010937:Plant Growth Regulators; C036216:ethylene
keywords: Arabidopsis; ground tissue stem cell; quiescent centre; rice