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Over-expression of mango (Mangifera indica L.) MiARF2 inhibits root and hypocotyl growth of Arabidopsis

文献类型： 外文期刊

作者： Wu, Bei 1 ; Li, Yun-He 2 ; Wu, Jian-Yong 3 ; Chen, Qi-Zhu 1 ; Huang, Xia 1 ; Chen, Yun-Feng 1 ; Huang, Xue-Lin 1 ;

作者机构： 1.Sun Yat Sen Zhongshan Univ, Key Lab Gene Engn, Minist Educ, Sch Life Sci, Guangzhou 510275, Guangdong, Peoples R China

2.Chinese Acad Trop Agr Sci, S Subtrop Crop Res Inst, Zhanjiang 524091, Peoples R China

3.Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Kowloon, Hong Kong, Peoples R China

关键词： open reading frame;DNA-binding domain: DBD;carboxy-terminal dimerization domain: CTD;cell proliferation;root growth;hypocotyl growth

期刊名称：MOLECULAR BIOLOGY REPORTS （ 影响因子：2.316； 五年影响因子：2.357 ）

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收录情况： SCI

摘要： An auxin response factor 2 gene, MiARF2, was cloned in our previous study [1] from the cotyledon section of mango (Mangifera indica L. cv. Zihua) during adventitious root formation, which shares an 84% amino acid sequence similarity to Arabidopsis ARF2. This study was to examine the effects of over-expression of the full-length MiARF2 open reading frame on the root and hypocotyl growth in Arabidopsis. Phenotype analysis showed that the T-3 transgenic lines had about 20-30% reduction in the length of hypocotyls and roots of the seedlings in comparison with the wild-type. The transcription levels of ANT and ARGOS genes which play a role in controlling organ size and cell proliferation in the transgenic seedlings also decreased. Therefore, the inhibited root and hypocotyl growth in the transgenic seedlings may be associated with the down-regulated transcription of ANT and ARGOS by the over-expression of MiARF2. This study also suggests that although MiARF2 only has a single DNA-binding domain (DBD), it can function as other ARF-like proteins containing complete DBD, middle region (MR) and carboxy-terminal dimerization domain (CTD).

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[1]Effect of exogenous calcium on root growth and endogenous hormone contents in pineapple seedlings. Wei, Changbin,Sun, Guangming,He, Yingdui,Li, Ruimei. 2014

[2]An aquaporin gene from halophyte Sesuvium portulacastrum, SpAQP1, increases salt tolerance in transgenic tobacco. Chang, Wenjun,Liu, Xiwen,Zhu, Jiahong,Fan, Wei,Chang, Wenjun,Liu, Xiwen,Zhu, Jiahong,Fan, Wei,Zhang, Zhili.

[3]Toxicarioside A, isolated from tropical Antiaris toxicaria, blocks endoglin/TGF-beta signaling in a bone marrow stromal cell line. Li, Yue-Nan,Huang, Feng-Ying,Mei, Wen-Li,Dai, Hao-Fu,Zhou, Peng,Li, Yue-Nan,Huang, Feng-Ying,Mei, Wen-Li,Dai, Hao-Fu,Zhou, Peng,Li, Yue-Nan,Huang, Feng-Ying,Guo, Jun-Li,Tan, Guang-Hong. 2012

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