数字农科院2.0

Gene expression profiling under different photoperiod/temperature conditions in a photoperiod-/thermo-sensitive genic male sterile line of rice (Oryza sativa L.)

文献类型： 外文期刊

作者： GUO Xiaoqin ; DONG Haitao *; ZHENG Kangle ; LUO Hongmei ; TAN Xuelin ; FANG Yongqi ; WANG Yanqin ; DENG Ye ; DAI Chengen ; LOU Yichun ; SHAO Jing ; SHI Wenqin ; ZHAO Dong ; LI Debao *

作者机构：

关键词： photoperiod-and thermo-sensitive genic male sterile (PTSGMS) rice;cDNA array;gene expression pattern;signal transduction

期刊名称： Chinese Science Bulletin

ISSN： 1001-6538

年卷期： 2006 年 51 卷 2 期

页码：

收录情况： SCI

摘要： Peiai 64S is a photoperiod- and thermosensitive genic male sterile (PTSGMS) line of rice, which is male sterile at long day/high temperature and partial fertile at short day/low temperature. A cDNA array representing 3328 unique rice genes was used to profile the gene expression patterns in the young panicles of Peiai 64S under these two conditions. The statistical data showed that up to 14.60% of genes exhibited up-or down-regulated expressions in the plants at long day/high temperature compared with plants at short day/low temperature. Only four genes were up-regulated while 482 genes down-regulated. Real-time PCR with all the up-regulated and 9 randomly selected down-regulated genes confirmed the differential expressions detected by the array, indicating that the constructed cDNA array is reliable. These differently expressed genes participated in almost all cell biological responses. Analysis of up- and down-regulated genes revealed distinctive changes between the mRNA abundances of MMK1 and MMK2, both of which are analogs of MAPK, and significant down-regulation of several transcription factors. It was suggested that changes that occurred in the MAPK signal transduction pathway might disturb the transcription control necessary for morphogenesis of pollens and corresponding physiological functions.

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