Characterization of an inducible C2 H2 -type zinc finger transcription factor VuSTOP1 in rice bean (Vigna umbellata) reveals differential regulation between low pH and aluminum tolerance mechanisms

Bibliographische Detailangaben
Veröffentlicht in:	The New phytologist. - 1979. - 208(2015), 2 vom: 23. Okt., Seite 456-68
1. Verfasser:	Fan, Wei (VerfasserIn)
Weitere Verfasser:	Lou, He Qiang, Gong, Yu Long, Liu, Mei Ya, Cao, Meng Jie, Liu, Yu, Yang, Jian Li, Zheng, Shao Jian
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2015
Zugriff auf das übergeordnete Werk:	The New phytologist
Schlagworte:	Journal Article Research Support, Non-U.S. Gov't Sensitive to Proton Rhizotoxicity1 (STOP1) aluminum (Al) toxicity citrate secretion proton toxicity rice bean (Vigna umbellata) transcriptional regulation Plant Proteins Protons mehr... RNA, Messenger Transcription Factors Cycloheximide 98600C0908 Aluminum CPD4NFA903 Glucuronidase EC 3.2.1.31

Beschreibung
Zusammenfassung:	© 2015 The Authors. New Phytologist © 2015 New Phytologist Trust. The rice bean (Vigna umbellata) root apex specifically secretes citrate through expression activation of Vigna umbellata Multidrug and Toxic Compound Extrusion 1 (VuMATE1) under aluminum (Al(3+) ) stress. However, the underlying mechanisms regulating VuMATE1 expression remain unknown. We isolated and characterized a gene encoding Sensitive to Proton Rhizotoxicity1 (STOP1)-like protein, VuSTOP1, from rice bean. The role of VuSTOP1 in regulating VuMATE1 expression was investigated using the yeast one-hybrid assay. We characterized the function of VuSTOP1 in Al(3) (+) - and H(+) -tolerance using in planta complementation assays. We demonstrated that VuSTOP1 has transactivation potential. We found that VuSTOP1 expression is inducible by Al(3+) and H(+) stress. However, although VuSTOP1 binds to the promoter of VuMATE1, the inconsistent tissue localization patterns of VuSTOP1 and VuMATE1 preclude VuSTOP1 as the major factor regulating VuMATE1 expression. In addition, when a protein translation inhibitor increased expression of VuSTOP1, VuMATE1 expression was inhibited. In planta complementation assay demonstrated that VuSTOP1 could fully restore expression of genes involved in H(+) tolerance, but could only partially restore expression of AtMATE. We conclude that VuSTOP1 plays a major role in H(+) tolerance, but only a minor role in Al(3+) tolerance. The differential transcriptional regulation of VuSTOP1 and VuMATE1 reveals a complex regulatory system controlling VuMATE1 expression
Beschreibung:	Date Completed 20.06.2016 Date Revised 21.03.2022 published: Print-Electronic Citation Status MEDLINE
ISSN:	1469-8137
DOI:	10.1111/nph.13456