Functional Conservation and Divergence of Soybean GmSTOP1 Members in Proton and Aluminum Tolerance

Frontiers in Plant Science
Weiwei WuHong Liao

Abstract

Proton (H+) and aluminum (Al) rhizotoxicity are two major factors limiting crop production in acid soils. Orthologs of the zinc-finger transcription factor, Sensitive To Proton Rhizotoxicity1 (STOP1), have been found to play an essential role in the tolerance to both stresses by regulating the transcription of multiple H+ and Al tolerant genes. In the present study, color three GmSTOP1 homologs were identified in the soybean genome. All three GmSTOP1 exhibited similar properties as reflected by the harboring of four potential zinc finger domains, localizing in the nucleus, and having transactivation activity. Expression profiling showed that H+ stress slightly modulated transcription of all three GmSTOP1s, while Al significantly up-regulated GmSTOP1-1 and GmSTOP1-3 in root apexes and GmSTOP1-3 in basal root regions. Furthermore, complementation assays in an Arabidopsis Atstop1 mutant line overexpressing these GmSTOP1s demonstrated that all three GmSTOP1s largely reverse the H+ sensitivity of the Atstop1 mutant and restore the expression of genes involved in H+ tolerance. In contrast, only GmSTOP1-1 and GmSTOP1-3 could partially recover Al tolerance in the Atstop1 mutant. These results suggest that the function of three GmSTOP1s...Continue Reading

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Citations

May 16, 2019·Journal of Zhejiang University. Science. B·Jian-Li YangShao-Jian Zheng
Mar 19, 2020·International Journal of Molecular Sciences·Xiao ZhangQibin Ma
Jun 21, 2020·International Journal of Molecular Sciences·Lijuan ZhaoYan Li
Apr 25, 2020·International Journal of Molecular Sciences·Yuan-Tai LiuXiu-Xiang Zhang
Mar 31, 2019·International Journal of Molecular Sciences·Xiang ZhangJixing Xia
Aug 10, 2021·Plant Physiology and Biochemistry : PPB·Weizhen JiangJiang Tian

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Datasets Mentioned

BETA
AB811781
BAN67817.1

Methods Mentioned

BETA
PCR

Software Mentioned

Image J
MEGA4
SPSS
ClustalX2
TBLASTN

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