Rice caryopsis development Ⅰ: Dynamic changes in different cell layers

查看全文 作　　者：Xiaoba [1]Wu;Jinxin [1]Liu;Dongqi [1]Li;Chun-Ming [1]Liu

机构地区：[1]Key Laboratory of Plant Molecular Physiology,Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China

出　　处：《Journal of Integrative Plant Biology》索引2016年第58卷第9期,共14页

基　　金：funded by the 863 National High-Tech R&D Program of China (2012AA02A707);the National Transgenic Science and Technology Program (2014ZX08009003-005) 摘　　要：Rice caryopsis as one of the most important food sources for humans has a complex structure that is composed of maternal tissues including the pericarp and testa and filial tissues including the endosperm and embryo. Although rice caryopsis studies have been conducted previously, a systematic characterization throughout the entire developmental process is still lacking. In this study, detailed morphological examinations of caryopses were made during the entire 30-day developmental process. We observed some rapid changes in cell differentiation events and cataloged how cellular degeneration processes occurred in maternal tissues. The differentiations of tube cells and cross cells were achieved by 9 days after pollination(DAP). In the testa, the outer integument was degenerated by 3 DAP, while the outer layer of the inner integument degenerated by 7 DAP. In the nucellus, all tissues with the exception of the nucellar projection and the nucellar epidermis degenerated in the first 5 DAP. By 21 DAP, all maternal tissues, including vascular bundles, the nucellar projection and the nucellar epidermal cells were degenerated. In summary, this study provides a complete atlas of the dynamic changes in cell differentiation and degeneration for individual maternal cell layers of rice caryopsis. 关键词：细胞分化动态变化发育过程颖果水稻表皮细胞体组织 DAP

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Rice caryopsis development Ⅰ: Dynamic changes in different cell layers

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