Functional Conservation and Divergence of Soybean GmSTOP1 Members in Proton and Aluminum Tolerance
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 trans...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2018-04-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | http://journal.frontiersin.org/article/10.3389/fpls.2018.00570/full |
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| author | Weiwei Wu Yan Lin Qianqian Chen Wenting Peng Junchu Peng Jiang Tian Cuiyue Liang Hong Liao |
| author_facet | Weiwei Wu Yan Lin Qianqian Chen Wenting Peng Junchu Peng Jiang Tian Cuiyue Liang Hong Liao |
| author_sort | Weiwei Wu |
| collection | DOAJ |
| description | 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 is evolutionarily conserved in H+ tolerance, but not in Al tolerance. |
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| issn | 1664-462X |
| language | English |
| last_indexed | 2024-12-13T08:13:18Z |
| publishDate | 2018-04-01 |
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| spelling | doaj.art-24953279e9904396a0d446cb3e7c6cce2022-12-21T23:54:09ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2018-04-01910.3389/fpls.2018.00570345566Functional Conservation and Divergence of Soybean GmSTOP1 Members in Proton and Aluminum ToleranceWeiwei Wu0Yan Lin1Qianqian Chen2Wenting Peng3Junchu Peng4Jiang Tian5Cuiyue Liang6Hong Liao7Root Biology Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, ChinaRoot Biology Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, ChinaRoot Biology Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, ChinaRoot Biology Center, Fujian Agriculture and Forestry University, Fuzhou, ChinaRoot Biology Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, ChinaRoot Biology Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, ChinaRoot Biology Center, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, ChinaRoot Biology Center, Fujian Agriculture and Forestry University, Fuzhou, ChinaProton (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 is evolutionarily conserved in H+ tolerance, but not in Al tolerance.http://journal.frontiersin.org/article/10.3389/fpls.2018.00570/fullGmSTOP1proton rhizotoxicityAl rhizotoxicitysoybeantranscription factor |
| spellingShingle | Weiwei Wu Yan Lin Qianqian Chen Wenting Peng Junchu Peng Jiang Tian Cuiyue Liang Hong Liao Functional Conservation and Divergence of Soybean GmSTOP1 Members in Proton and Aluminum Tolerance Frontiers in Plant Science GmSTOP1 proton rhizotoxicity Al rhizotoxicity soybean transcription factor |
| title | Functional Conservation and Divergence of Soybean GmSTOP1 Members in Proton and Aluminum Tolerance |
| title_full | Functional Conservation and Divergence of Soybean GmSTOP1 Members in Proton and Aluminum Tolerance |
| title_fullStr | Functional Conservation and Divergence of Soybean GmSTOP1 Members in Proton and Aluminum Tolerance |
| title_full_unstemmed | Functional Conservation and Divergence of Soybean GmSTOP1 Members in Proton and Aluminum Tolerance |
| title_short | Functional Conservation and Divergence of Soybean GmSTOP1 Members in Proton and Aluminum Tolerance |
| title_sort | functional conservation and divergence of soybean gmstop1 members in proton and aluminum tolerance |
| topic | GmSTOP1 proton rhizotoxicity Al rhizotoxicity soybean transcription factor |
| url | http://journal.frontiersin.org/article/10.3389/fpls.2018.00570/full |
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