Characterization of the genome expression trends in the heading-stage panicle of six rice lineages
文献类型: 外文期刊
第一作者: Dzikiewicz, Katherine M.
作者: Dzikiewicz, Katherine M.;Li, Lei;Peng, Zhi-Yu;Liu, Tingting;Deng, Xing-Wang;Peng, Zhi-Yu;Li, Songgang;Zhu, Qi-Hui;Zhang, Huiyong;Liu, Tingting;Ma, Ligeng;Deng, Xing-Wang;Zhang, Huiyong;Wang, Xiangfeng;Deng, Xing-Wang;Hu, Guocheng;Wei, Xinghua;Sun, Zongxiu;Zhu, Zhengge;Zhu, Qi-Hui;Ge, Song
作者机构:
关键词: Gene expression;Comparative genomics;Microarray;Rice;Domestication
期刊名称:GENOMICS ( 影响因子:5.736; 五年影响因子:4.939 )
ISSN: 0888-7543
年卷期: 2009 年 93 卷 2 期
页码:
收录情况: SCI
摘要: To study how changes in gene regulation shape phenotypic variations in rice, we performed a comparative analysis of genome expression in the heading-stage panicle from six lineages of cultivated and wild rice, including Oryza sativa subsp. indica, japonica and javanica, O. nivara, O. rufipogon and O. glaberrima. While nearly three-quarters of the genes are expressed at a constant level in all six lineages, a large portion of the genome, ranging from 1767 to 4489 genes, exhibited differential expression between Asian domesticated and wild rice with repression or down-regulation of genome expression in Asian cultivated rice as the dominant trend. Importantly, we found this repression was achieved to a large extent by the differential expression of a single member of paralogous gene families. Functional analysis of the differentially expressed genes revealed that genes related to catabolism are repressed while genes related to anabolism up-regulated. Finally, we observed that distinct evolutionary forces may have acted on gene expression and the coding sequences in the examined rice lineages. Published by Elsevier Inc.
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