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Auxin enhances aluminium-induced citrate exudation through upregulation of GmMATE and activation of the plasma membrane H-ATPase in soybean roots
Wang, Ping; Yu, Wenqian; Zhang, Jiarong; Rengel, Zed; Xu, Jin; Han, Qinqin; Chen, Limei; Li, Kunzhi; Yu, Yongxiong; Chen, Qi
2016
Source PublicationANNALS OF BOTANY
ISSN0305-7364
Volume118Issue:5Pages:933-940
AbstractBackground and Aims Aluminium (Al) toxicity is a limiting factor for plant growth and crop production in acidic soils. Citrate exudation and activation of the plasma membrane H-ATPase are involved in soybean responses to Al stress. Auxin has crucial functions in plant growth and stress responses. However, little is known about possible interactions between auxin and citrate exudation under Al stress. In this study, we elucidated the regulatory roles of IAA in Al-induced citrate exudation in soybean roots. Methods We measured IAA content, Al concentration, citrate exudation, plasma membrane H-ATPase activity, expression of the relevant genes and phosphorylation of the plasma membrane H-ATPase by integrating physiological characterization and molecular analysis using hydroponically grown soybean. Key Results The concentration of IAA was increased by 25 and 50 mu M Al, but decreased to the control level at 200 mu M Al. External addition of 50 mu M IAA to the root medium containing 25, 50 or 200 mu M Al decreased root Al concentration and stimulated Al-induced citrate exudation and the plasma membrane H-ATPase activity. Reverse transcription-PCR analysis showed that exogenous IAA enhanced the expression of citrate exudation transporter (GmMATE) but not the plasma membrane H-ATPase gene. The western blot results suggested that IAA enhanced phosphorylation of the plasma membrane H-ATPase under Al stress. Conclusions Auxin enhanced Al-induced citrate exudation through upregulation of GmMATE and an increase in phosphorylation of the plasma membrane H-ATPase in soybean roots.
Subject AreaPlant Sciences
Language英语
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/10417
Collection其他
Recommended Citation
GB/T 7714
Wang, Ping,Yu, Wenqian,Zhang, Jiarong,et al. Auxin enhances aluminium-induced citrate exudation through upregulation of GmMATE and activation of the plasma membrane H-ATPase in soybean roots[J]. ANNALS OF BOTANY,2016,118(5):933-940.
APA Wang, Ping.,Yu, Wenqian.,Zhang, Jiarong.,Rengel, Zed.,Xu, Jin.,...&Chen, Qi.(2016).Auxin enhances aluminium-induced citrate exudation through upregulation of GmMATE and activation of the plasma membrane H-ATPase in soybean roots.ANNALS OF BOTANY,118(5),933-940.
MLA Wang, Ping,et al."Auxin enhances aluminium-induced citrate exudation through upregulation of GmMATE and activation of the plasma membrane H-ATPase in soybean roots".ANNALS OF BOTANY 118.5(2016):933-940.
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