The PPR protein PDM1 is involved in the processing of rpoA pre-mRNA in Arabidopsis thaliana

被引：9
|
作者：
Wu Hao [2 ]
Zhang LiXin [1 ]
机构：
[1] Chinese Acad Sci, Inst Bot, Photosynth Res Ctr, Key Lab Photobiol, Beijing 100093, Peoples R China
[2] Lanzhou Univ, Sch Life Sci, Lanzhou 730000, Peoples R China
来源：
CHINESE SCIENCE BULLETIN | 2010年 / 55卷 / 30期
基金：
中国国家自然科学基金;
关键词：
Arabidopsis; PDM1; PPR protein; rpoA; PENTATRICOPEPTIDE REPEAT PROTEIN; NUCLEUS-ENCODED FACTOR; PHOTOSYSTEM-II; CHLOROPLAST; EXPRESSION; TOBACCO; GENES; MITOCHONDRIAL; POLYMERASES; REVEALS;
D O I：
10.1007/s11434-010-4040-4
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Pentatricopeptide repeat (PPR) proteins, containing tandem repeats of degenerate 35 amino acid motifs, are important for post-transcriptional chloroplast gene expression. In this study, we report the characterization of a pigment-deficient mutant 1 (pdm1) in Arabidopsis, which displays the albino phenotype. PDM1 contains 5 PPR motifs followed by a PLS domain. The levels of plastid-encoded polymerase-dependent chloroplast genes were reduced dramatically, whereas those of nucleus-encoded polymerase-dependent chloroplast genes increased in the mutant. In addition, the pattern of rpoA pre-mRNA was altered and the rpoA transcript was absent in pdm1. Thus, these results suggest that PDM1 is required for processing of rpoA pre-mRNA in Arabidopsis.
引用
收藏
页码：3485 / 3489
页数：5
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