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    • Keywords


      Arachis hypogaea L.; cDNA library; ESTs; late embryogenesis abundant protein

    • Abstract


      Late embryogenesis abundant (LEA) protein family is a large protein family that includes proteins accumulated at late stages of seed development or in vegetative tissues in response to drought, salinity, cold stress and exogenous application of abscisic acid. In order to isolate peanut genes, an expressed sequence tag (EST) sequencing project was carried out using a peanut seed cDNA library. From 6258 ESTs, 19 LEA-encoding genes were identified and could be classified into eight distinct groups. Expression of these genes in seeds at different developmental stages and in various peanut tissues was analysed by semi-quantitative RT-PCR. The results showed that expression levels of LEA genes were generally high in seeds. Some LEA protein genes were expressed at a high level in non-seed tissues such as root, stem, leaf, flower and gynophore. These results provided valuable information for the functional and regulatory studies on peanut LEA genes.

    • Author Affiliations


      Lei Su1 2 Chuan-Zhi Zhao2 Yu-Ping Bi1 2 Shu-Bo Wan2 Han Xia2 Xing-Jun Wang1 2

      1. College of Life Science, Shandong Normal University, Jinan 250014, The People’s Republic of China
      2. High-Tech Research Center, Shandong Academy of Agricultural Sciences; Key Laboratory of Crop Genetic Improvement and Biotechnology, Huanghuaihai, Ministry of Agriculture, The People's Republic of China; Key Laboratory for Genetic Improvement of Crop, Animal and Poultry of Shandong Province, Ji'nan 250100, The People's Republic of China
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    • Supplementary Material

  • Journal of Biosciences | News

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      Posted on July 25, 2019

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