The Late Embryogenesis Abundant Protein Family in Cassava (Manihot esculenta Crantz): Genome-Wide Characterization and Expression during Abiotic Stress
文献类型： 外文期刊
作者： Wu, Chunlai 1 ; Hu, Wei 1 ; Yan, Yan 1 ; Tie, Weiwei 1 ; Ding, Zehong 1 ; Guo, Jianchun 1 ; He, Guangyuan;
作者机构： 1.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Key Lab Biol & Genet Resources Trop Crops, Haikou 571101, Hainan, Peoples R China
2.HUST, Chinese Natl Ctr Plant Gene Res Wuhan HUST Part, Chinese Minist Educ,Coll Life Sci & Technol,Key L, Genet Engn Int Cooperat Base,Chinese Minist Sci &, Wuhan 430074, Peoples
关键词： abiotic stress; cassava; characterization; genome-wide analysis; late embryogenesis abundant (LEA) protein
期刊名称：MOLECULES （ 影响因子：4.411； 五年影响因子：4.587 ）
ISSN： 1420-3049
年卷期： 2018 年 23 卷 5 期
页码：
收录情况： SCI
摘要： Late embryogenesis abundant (LEA) proteins, as a highly diverse group of polypeptides, play an important role in plant adaptation to abiotic stress; however, LEAs from cassava have not been studied in cassava. In this study, 26 LEA members were genome-wide identified from cassava, which were clustered into seven subfamily according to evolutionary relationship, protein motif, and gene structure analyses. Chromosomal location and duplication event analyses suggested that 26 MeLEAs distributed in 10 chromosomes and 11 MeLEA paralogues were subjected to purifying selection. Transcriptomic analysis showed the expression profiles of MeLEAs in different tissues of stem, leaves, and storage roots of three accessions. Comparative transcriptomic analysis revealed that the function of MeLEAs in response to drought may be differentiated in different accessions. Compared with the wild subspecies W14, more MeLEA genes were activated in cultivated varieties Arg7 and SC124 after drought treatment. Several MeLEA genes showed induction under various stresses and related signaling treatments. Taken together, this study demonstrates the transcriptional control of MeLEAs in tissue development and the responses to abiotic stress in cassava and identifies candidate genes for improving crop resistance to abiotic stress.
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