title: Isolation and expression analysis of LEA genes in peanut (Arachis hypogaea L.).
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.
authors.affiliation: College of Life Science, Shandong Normal University, Jinan 250014, The People's Republic of China.
authors.forename: Lei
authors.initials: L
authors.lastname: Su
authors.forename: Chuan-Zhi
authors.initials: CZ
authors.lastname: Zhao
authors.forename: Yu-Ping
authors.initials: YP
authors.lastname: Bi
authors.forename: Shu-Bo
authors.initials: SB
authors.lastname: Wan
authors.forename: Han
authors.initials: H
authors.lastname: Xia
authors.forename: Xing-Jun
authors.initials: XJ
authors.lastname: Wang
mesh_terms: D010367:Arachis / Q000235:genetics* / Q000254:growth & development; D020224:Expressed Sequence Tags; D035264:Flowers / Q000235:genetics / Q000378:metabolism; D020869:Gene Expression Profiling; D018507:Gene Expression Regulation, Developmental; D008969:Molecular Sequence Data; D010940:Plant Proteins / Q000145:classification / Q000235:genetics*; D018517:Plant Roots / Q000235:genetics / Q000378:metabolism; D018547:Plant Stems / Q000235:genetics / Q000378:metabolism; D012639:Seeds / Q000235:genetics / Q000378:metabolism; D017422:Sequence Analysis, DNA
chemical_list: D010940:Plant Proteins; C066246:late embryogenesis abundant protein, plant