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The lectin gene TRpL1 of tetraploid Robinia pseudoacacia L. response to salt stress

文献类型： 外文期刊

作者： Liu, Shuo 1 ; Jiang, Yaxuan 1 ; Guo, Xinyu 3 ; Xu, Liping 1 ; Lei, Pei 1 ; Luo, Qiuxiang 1 ; Liu, Jianxin 4 ; Li, Wei 4 ; Tao, Lei 1 ; Meng, Fanjuan 1 ;

作者机构： 1.Northeast Forestry Univ, Coll Life Sci, Harbin 150040, Peoples R China

2.Northeast Forestry Univ, State Key Lab Tree Genet & Breeding, Harbin 150040, Peoples R China

3.Harbin Engn Univ, Harbin 150001, Peoples R China

4.Heilongjiang Acad Agr Sci, Crop Tillage & Cultivat Inst, Harbin 150028, Peoples R China

关键词： Tetraploid Robinia pseudoacacia lectin; Salt stress; Polyploid

期刊名称：JOURNAL OF FORESTRY RESEARCH （ 影响因子：2.361； 五年影响因子：2.051 ）

ISSN： 1007-662X

年卷期：

页码：

收录情况： SCI

摘要： Lectins are natural proteins in animals, plants, and microorganisms and can be divided into 12 families. These lectins play important roles in various environmental stresses. Some polyploid plants show tolerance to environmental stresses and to insect pests. However, the mechanism of stress tolerance is unclear. Tetraploid Robinia pseudoacacia (4x) under salt stress showed higher tolerance than diploid R. pseudoacacia (2x). As lectin can improve stress tolerance, it was questioned whether the stress resistance of polyploid plants was related to the lectin protein. In this study, salt resistance of lectin gene TRpL1 was verified by its over-expression in plants. In addition, salt resistance of lectin protein by E. coli strains was detected. The data revealed that the over-expression transgenic plants of TRpL1 showed better salt tolerance than control plants under salt stress, and the TRpL1-expressing strain also grew better in the medium with added NaCl. Therefore, tetraploid plants can resist salt stress through TRpL1 protein regulation.

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