Banana MaEF1A facilitates plant growth and development

文献类型： 外文期刊

第一作者： Liu, J. -H.

作者： Liu, J. -H.;Li, Y. -C.;Zhang, J.;Zhang, N.;Xu, B. -Y.;Jin, Z. -Q.;Liu, J. -H.;Li, Y. -C.;Zhang, J.;Zhang, N.;Xu, B. -Y.;Jin, Z. -Q.;Wang, A. -B.;Jin, Z. -Q.;Gao, P. -Z.

作者机构：

关键词： Arabidopsis thaliana;gene expression;Musa acuminata;plant development;transgenic plants

期刊名称：BIOLOGIA PLANTARUM （ 影响因子：1.747； 五年影响因子：2.146 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Plant translation elongation factor 1 alpha (EF1A) is both a protein synthesis factor and an important component of plant signal transduction, immune responses, protein trafficking, and apoptosis. However, its role in plant growth and development remains unclear. Herein, a full-length EF1A gene was isolated from banana (Musa acuminata L.) fruit and termed MaEF1A. We found that MaEF1A shared a high sequence identify with respective genes in other plants and the deduced amino acid sequence contained conserved regions of GTP-EFTU, GTP-EFTU-02, and GTP-EFTU-03, as well as two tRNA binding domains and six GTP-binding sites which represent functional domains for protein biosynthesis. MaEF1A protein is mainly localized to the nucleus. MaEF1A was constitutively expressed in different banana organs including developing fruits, and the highest expression was detected in ovary 4 stage. Arabidopsis thaliana L. (ecotype Columbia) was transformed with MaEF1A and four transgenic lines were obtained. Three transgenic lines were selected for further phenotypic analyses. Our findings indicate that overexpressed MaEF1A could greatly enhance plant height, root length, and both rhachis and silique length by promoting cell expansion and elongation. These experiments suggest an important role for MaEF1A in plant growth and development.

分类号： Q94

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