Genome-wide analysis suggests divergent evolution of lipid phosphotases/phosphotransferase genes in plants

文献类型： 外文期刊

第一作者： Wang, Peng

作者： Wang, Peng;Chen, Zhenxi;Gai, Jiangtao;Wang, Peng;Chen, Zhenxi;Gai, Jiangtao;Kasimu, Rena;Chen, Yinhua;Zhang, Xiaoxiao

作者机构：

关键词： lipid phosphatase/phosphotransferase;lipid;duplication;motif;transcriptome

期刊名称：GENOME （ 影响因子：2.166； 五年影响因子：2.474 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： Genes of the LPPT (lipid phosphatase/phosphotransferase) family play important roles in lipid phosphorous transfer and triacylglycerol accumulation in plants. To provide overviews of the plant LPPT family and their overall relationships, here we carried out genome-wide identifications and analyses of plant LPPT family members. A total of 643 putative LPPT genes were identified from 48 sequenced plant genomes, among which 205 genes from 14 plants were chosen for further analyses. Plant LPPT genes belonged to three distinctive groups, namely the LPT (lipid phosphotransfease), LPP (lipid phosphatase), and pLPP (plastidic lipid phosphotransfease) groups. Genes of the LPT group could be further partitioned into three groups, two of which were only identified in terrestrial plants. Genes in the LPP and pLPP groups experienced duplications in early stages of plant evolution. Among 17 Zea mays LPPT genes, divergence of temporal-spatial expression patterns was revealed based on microarray data analysis. Peptide sequences of plant LPPT genes harbored different conserved motifs. A test of Branch Model versus One-ratio Model did not support significant selective pressures acting on different groups of LPPT genes, although quite different nonsynonymous evolutionary rates and selective pressures were observed. The complete picture of the plant LPPT family provided here should facilitate further investigations of plant LPPT genes and offer a better understanding of lipid biosynthesis in plants.

分类号： Q3`R394

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