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Characterization of Five Putative Acyl Carrier Protein (ACP) Isoforms from Developing Seeds of Arachis hypogaea L.

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Abstract

Five putative acyl carrier protein (ACP) cDNAs were isolated from developing peanut seeds by searching ESTs of a peanut immature-seed cDNA library and PCR-based cloning. Five peanut ACPs contained a strictly conserved Ser residue in the Asp-Ser-Leu (DSL) motif, which is an important characteristic of ACPs in plants and bacteria. Three AhACPs, AhACP1, AhACP4, AhACP5, were predicted to be located in chloroplast, while two AhACPs, AhACP2 and AhACP3, in mitochondria. Comparison of genomic DNA and cDNA sequences demonstrated three chloroplast ACPs (cpACPs) comprising of four exons and three introns while two mitochondrial ACPs (mtACPs) contained two exons and one intron. More than two homologs of each AhACP were expressed in developing peanut seeds. Most homologs were verified by corresponding genomic DNA sequences. Semi-quantitative RT-PCR analysis suggested AhACP1 was a seed-predominant ACP isoform. AhACP4 and AhACP5 showed same mRNA profile in different organs and during seed development. Two mtACPs expressed highly in peanut flower tissue which was distinct from three cpACPs.

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Abbreviations

ACP:

Acyl carrier protein

cpACP:

Chloroplast ACP

mtACP:

Mitochondrial ACP

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Acknowledgments

This work was supported by grants from the National High Technology Research and Development Program of China (2006AA10A114), Shandong Academy of Agricultural Sciences Foundation (2006YCX030), (2007YCX001) and Foundation of Shandong Province (200701004), (Z2002D06)

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Authors and Affiliations

  1. High-Tech Research Center, Shandong Academy of Agricultural Sciences, Key Laboratory for Genetic Improvement of Crop, Animal and Poultry of Shandong Province, Key Laboratory of Crop Genetic Improvement and Biotechnology, Huanghuaihai, Ministry of Agriculture, Ji’nan, 250100, China

    Meng-Jun Li, Xing-Jun Wang, Lei Su, Yu-Ping Bi & Shu-Bo Wan

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  1. Meng-Jun Li
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  2. Xing-Jun Wang
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  3. Lei Su
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Correspondence to Xing-Jun Wang.

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Li, MJ., Wang, XJ., Su, L. et al. Characterization of Five Putative Acyl Carrier Protein (ACP) Isoforms from Developing Seeds of Arachis hypogaea L.. Plant Mol Biol Rep 28, 365–372 (2010). https://doi.org/10.1007/s11105-009-0160-x

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