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Published on: January 14, 2016
Definition and stabilisation of the quiescent centre in rice roots
1College 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.
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.
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