Wheat gibberellin oxidase genes and their functions in regulating tillering
Multiple genetic factors control tillering, a key agronomy trait for wheat (Triticum aestivum L.) yield. Previously, we reported a dwarf-monoculm mutant (dmc) derived from wheat cultivar Guomai 301, and found that the contents of gibberellic acid 3 (GA3) in the tiller primordia of dmc were significa...
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PeerJ Inc.
2023-09-01
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| author | Ting Wang Junchang Li Yumei Jiang Jing Zhang Yongjing Ni Peipei Zhang Ziping Yao Zhixin Jiao Huijuan Li Lei Li Yufan Niu Qiaoyun Li Guihong Yin Jishan Niu |
| author_facet | Ting Wang Junchang Li Yumei Jiang Jing Zhang Yongjing Ni Peipei Zhang Ziping Yao Zhixin Jiao Huijuan Li Lei Li Yufan Niu Qiaoyun Li Guihong Yin Jishan Niu |
| author_sort | Ting Wang |
| collection | DOAJ |
| description | Multiple genetic factors control tillering, a key agronomy trait for wheat (Triticum aestivum L.) yield. Previously, we reported a dwarf-monoculm mutant (dmc) derived from wheat cultivar Guomai 301, and found that the contents of gibberellic acid 3 (GA3) in the tiller primordia of dmc were significantly higher. Transcriptome analysis indicated that some wheat gibberellin oxidase (TaGAox) genes TaGA20ox-A2, TaGA20ox-B2, TaGA3ox-A2, TaGA20ox-A4, TaGA2ox-A10 and TaGA2ox-B10 were differentially expressed in dmc. Therefore, this study systematically analyzed the roles of gibberellin oxidase genes during wheat tillering. A total of 63 TaGAox genes were identified by whole genome analysis. The TaGAoxs were clustered to four subfamilies, GA20oxs, GA2oxs, GA3oxs and GA7oxs, including seven subgroups based on their protein structures. The promoter regions of TaGAox genes contain a large number of cis-acting elements closely related to hormone, plant growth and development, light, and abiotic stress responses. Segmental duplication events played a major role in TaGAoxs expansion. Compared to Arabidopsis, the gene collinearity degrees of the GAoxs were significantly higher among wheat, rice and maize. TaGAox genes showed tissue-specific expression patterns. The expressions of TaGAox genes (TaGA20ox-B2, TaGA7ox-A1, TaGA2ox10 and TaGA3ox-A2) were significantly affected by exogenous GA3 applications, which also significantly promoted tillering of Guomai 301, but didn’t promote dmc. TaGA7ox-A1 overexpression transgenic wheat lines were obtained by Agrobacterium mediated transformation. Genomic PCR and first-generation sequencing demonstrated that the gene was integrated into the wheat genome. Association analysis of TaGA7ox-A1 expression level and tiller number per plant demonstrated that the tillering capacities of some TaGA7ox-A1 transgenic lines were increased. These data demonstrated that some TaGAoxs as well as GA signaling were involved in regulating wheat tillering, but the GA signaling pathway was disturbed in dmc. This study provided valuable clues for functional characterization of GAox genes in wheat. |
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| spelling | doaj.art-117c05c1c1244ec99279eef5562a6a1b2023-12-03T01:03:23ZengPeerJ Inc.PeerJ2167-83592023-09-0111e1592410.7717/peerj.15924Wheat gibberellin oxidase genes and their functions in regulating tilleringTing Wang0Junchang Li1Yumei Jiang2Jing Zhang3Yongjing Ni4Peipei Zhang5Ziping Yao6Zhixin Jiao7Huijuan Li8Lei Li9Yufan Niu10Qiaoyun Li11Guihong Yin12Jishan Niu13Henan Technology Innovation Centre of Wheat/National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, Henan, ChinaHenan Technology Innovation Centre of Wheat/National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, Henan, ChinaHenan Technology Innovation Centre of Wheat/National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, Henan, ChinaHenan Technology Innovation Centre of Wheat/National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, Henan, ChinaHenan Engineering Research Center of Wheat Spring Freeze Injury Identification, Shangqiu Academy of Agricultural and Forestry Sciences, Shangqiu, Henan, China, Shangqiu, ChinaHenan Technology Innovation Centre of Wheat/National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, Henan, ChinaHenan Technology Innovation Centre of Wheat/National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, Henan, ChinaHenan Technology Innovation Centre of Wheat/National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, Henan, ChinaHenan Technology Innovation Centre of Wheat/National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, Henan, ChinaHenan Technology Innovation Centre of Wheat/National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, Henan, ChinaHenan Technology Innovation Centre of Wheat/National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, Henan, ChinaHenan Technology Innovation Centre of Wheat/National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, Henan, ChinaHenan Technology Innovation Centre of Wheat/National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, Henan, ChinaHenan Technology Innovation Centre of Wheat/National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, Henan, ChinaMultiple genetic factors control tillering, a key agronomy trait for wheat (Triticum aestivum L.) yield. Previously, we reported a dwarf-monoculm mutant (dmc) derived from wheat cultivar Guomai 301, and found that the contents of gibberellic acid 3 (GA3) in the tiller primordia of dmc were significantly higher. Transcriptome analysis indicated that some wheat gibberellin oxidase (TaGAox) genes TaGA20ox-A2, TaGA20ox-B2, TaGA3ox-A2, TaGA20ox-A4, TaGA2ox-A10 and TaGA2ox-B10 were differentially expressed in dmc. Therefore, this study systematically analyzed the roles of gibberellin oxidase genes during wheat tillering. A total of 63 TaGAox genes were identified by whole genome analysis. The TaGAoxs were clustered to four subfamilies, GA20oxs, GA2oxs, GA3oxs and GA7oxs, including seven subgroups based on their protein structures. The promoter regions of TaGAox genes contain a large number of cis-acting elements closely related to hormone, plant growth and development, light, and abiotic stress responses. Segmental duplication events played a major role in TaGAoxs expansion. Compared to Arabidopsis, the gene collinearity degrees of the GAoxs were significantly higher among wheat, rice and maize. TaGAox genes showed tissue-specific expression patterns. The expressions of TaGAox genes (TaGA20ox-B2, TaGA7ox-A1, TaGA2ox10 and TaGA3ox-A2) were significantly affected by exogenous GA3 applications, which also significantly promoted tillering of Guomai 301, but didn’t promote dmc. TaGA7ox-A1 overexpression transgenic wheat lines were obtained by Agrobacterium mediated transformation. Genomic PCR and first-generation sequencing demonstrated that the gene was integrated into the wheat genome. Association analysis of TaGA7ox-A1 expression level and tiller number per plant demonstrated that the tillering capacities of some TaGA7ox-A1 transgenic lines were increased. These data demonstrated that some TaGAoxs as well as GA signaling were involved in regulating wheat tillering, but the GA signaling pathway was disturbed in dmc. This study provided valuable clues for functional characterization of GAox genes in wheat.https://peerj.com/articles/15924.pdfWheat (Triticum aestivum L.)Gibberellin oxidase (GAox)TilleringExpression profilesGibberellin (GA)Gene transformation |
| spellingShingle | Ting Wang Junchang Li Yumei Jiang Jing Zhang Yongjing Ni Peipei Zhang Ziping Yao Zhixin Jiao Huijuan Li Lei Li Yufan Niu Qiaoyun Li Guihong Yin Jishan Niu Wheat gibberellin oxidase genes and their functions in regulating tillering PeerJ Wheat (Triticum aestivum L.) Gibberellin oxidase (GAox) Tillering Expression profiles Gibberellin (GA) Gene transformation |
| title | Wheat gibberellin oxidase genes and their functions in regulating tillering |
| title_full | Wheat gibberellin oxidase genes and their functions in regulating tillering |
| title_fullStr | Wheat gibberellin oxidase genes and their functions in regulating tillering |
| title_full_unstemmed | Wheat gibberellin oxidase genes and their functions in regulating tillering |
| title_short | Wheat gibberellin oxidase genes and their functions in regulating tillering |
| title_sort | wheat gibberellin oxidase genes and their functions in regulating tillering |
| topic | Wheat (Triticum aestivum L.) Gibberellin oxidase (GAox) Tillering Expression profiles Gibberellin (GA) Gene transformation |
| url | https://peerj.com/articles/15924.pdf |
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