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Identification and Analysis of Medicago truncatula Auxin Transporter Gene Families Uncover their Roles in Responses to Sinorhizobium meliloti Infection

文献类型： 外文期刊

作者： Shen, Chenjia 1 ; Yue, Runqing 2 ; Bai, Youhuang 3 ; Feng, Rong 4 ; Sun, Tao 1 ; Wang, Xiaofei 4 ; Yang, Yanjun 1 ; Tie, 1 ;

作者机构： 1.Hangzhou Normal Univ, Coll Life & Environm Sci, Hangzhou 310036, Zhejiang, Peoples R China

2.Henan Acad Agr Sci, Zhengzhou 450002, Peoples R China

3.Chinese Acad Agr Sci TTICAAS, Key Lab Tea Plant Biol & Resources Utilizat, Minist Agr, Tea Res Inst, Hangzhou 310008, Zhejiang, Peoples R China

4.Zhejiang A&F Univ, Key Lab Qual Improvement Agr Prod Zhejiang Prov, Coll Agr & Food Sci, Linan 311300, Peoples R China

关键词： Auxin;Auxin transport;dmi3;Medicago truncatula;Sinorhizobium meliloti infection;Symbiosis

期刊名称：PLANT AND CELL PHYSIOLOGY （ 影响因子：4.927； 五年影响因子：5.516 ）

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收录情况： SCI

摘要： Auxin transport plays a pivotal role in the interaction between legume species and nitrogen-fixing bacteria to form symbioses. Auxin influx carriers auxin resistant 1/like aux 1 (AUX/LAX), efflux carriers pin-formed (PIN) and efflux/conditional P-glycoprotein (PGP/ABCB) are three major protein families participating in auxin polar transport. We used the latest Medicago truncatula genome sequence to characterize and analyze the M. truncatula LAX (MtLAX), M. truncatula PIN (MtPIN) and M. truncatula ABCB (MtABCB) families. Transient expression experiments indicated that three representative auxin transporters (MtLAX3, MtPIN7 and MtABCB1) showed cell plasma membrane localizations. The expression of most MtLAX, MtPIN and MtABCB genes was up-regulated in the roots and was down-regulated in the shoots by Sinorhizobium meliloti infection in the wild type (WT). However, the expression of these genes was down-regulated in both the roots and shoots of an infection-resistant mutant, dmi3. The different expression patterns between the WT and the mutant roots indicated that auxin relocation may be involved in rhizobial infection responses. Furthermore, IAA contents were significantly up-regulated in the shoots and down-regulated in the roots after Sinorhizobium meliloti infection in the WT. Inoculation of roots with rhizobia may reduce the auxin loading from shoots to roots by inhibiting the expression of most auxin transporter genes. However, the rate of change of gene expression and IAA contents in the dmi3 mutant were obviously lower than in the WT. The identification and expression analysis of auxin transporter genes helps us to understand the roles of auxin in the regulation of nodule formation in M. truncatula.

  • 相关文献

[1]Genome-wide identification and expression analysis of auxin response factor gene family in Medicago truncatula. Shen, Chenjia,Sun, Tao,Xu, Luqin,Wang, Huizhong,Yang, Yanjun,Yue, Runqing,Tie, Shuanggui,Zhang, Lei. 2015

[2]Transcriptome Analysis of Cadmium-Treated Roots in Maize (Zea mays L.). Yue, Runqing,Lu, Caixia,Qi, Jianshuang,Han, Xiaohua,Yan, Shufeng,Guo, Shulei,Liu, Lu,Fu, Xiaolei,Chen, Nana,Yin, Haiyan,Chi, Haifeng,Tie, Shuanggui,Yue, Runqing,Lu, Caixia,Qi, Jianshuang,Han, Xiaohua,Yan, Shufeng,Guo, Shulei,Liu, Lu,Fu, Xiaolei,Chen, Nana,Yin, Haiyan,Chi, Haifeng,Tie, Shuanggui. 2016

[3]Genome-wide identification, expression analysis of GH3 family genes in Medicago truncatula under stress-related hormones and Sinorhizobium meliloti infection. Yang, Yanjun,Sun, Tao,Zeng, Houqing,Wang, Huizhong,Shen, Chenjia,Yue, Runqing,Zhang, Lei,Chen, Wei.

[4]Auxin Signaling is Involved in Iron Deficiency-induced Photosynthetic Inhibition and Shoot Growth Defect in Rice (Oryza sativa L.). Liu, Kaidong,Yuan, Changchun,Liu, Jinxiang,Yue, Runqing,Tie, Shuanggui,Zhang, Lei,Sun, Tao,Yang, Yanjun,Shen, Chenjia.

[5]OsARF16, a transcription factor regulating auxin redistribution, is required for iron deficiency response in rice (Oryza sativa L.). Shen, Chenjia,Sun, Tao,Yang, Yanjun,Wang, Huizhong,Yue, Runqing,Zhang, Lei.

[6]The promoting effects of alginate oligosaccharides on root development in Oryza sativa L. mediated by auxin signaling. Zhang, Yunhong,He, Ailing,Sun, Kegang,Zhang, Yunhong,Yin, Heng,Zhao, Xiaoming,Wang, Wenxia,Du, Yuguang.

[7]Genome-wide identification, expression analysis of auxin-responsive GH3 family genes in maize (Zea mays L.) under abiotic stresses. Feng, Shangguo,Yang, Yanjun,Xu, Mingfeng,Wang, Huizhong,Shen, Chenjia,Yue, Runqing,Zhang, Lei. 2015

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