INTERMEDIUM-C mediates the shade-induced bud growth arrest in barley
Tiller formation is a key agronomic determinant for grain yield in cereal crops. The modulation of this trait is controlled by transcriptional regulators and plant hormones, tightly regulated by external environmental conditions. While endogenous (genetic) and exogenous (environmental factors) trigg...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Oxford University Press
2022
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/164148 |
| _version_ | 1855532593457397760 |
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| author | Wang, Hongwen Seiler, Christiane Sreenivasulu, Nese von Wirén, Nicolaus Kuhlmann, Markus |
| author_browse | Kuhlmann, Markus Seiler, Christiane Sreenivasulu, Nese Wang, Hongwen von Wirén, Nicolaus |
| author_facet | Wang, Hongwen Seiler, Christiane Sreenivasulu, Nese von Wirén, Nicolaus Kuhlmann, Markus |
| author_sort | Wang, Hongwen |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Tiller formation is a key agronomic determinant for grain yield in cereal crops. The modulation of this trait is controlled by transcriptional regulators and plant hormones, tightly regulated by external environmental conditions. While endogenous (genetic) and exogenous (environmental factors) triggers for tiller formation have mostly been investigated separately, it has remained elusive how they are integrated into the developmental program of this trait. The transcription factor gene INTERMEDIUM-C (INT-C), which is the barley ortholog of the maize domestication gene TEOSINTE BRANCHED1 (TB1), has a prominent role in regulating tiller bud outgrowth. Here we show that INT-C is expressed in tiller buds, required for bud growth arrest in response to shade. In contrast to wild-type plants, int-c mutant plants are impaired in their shade response and do not stop tiller production after shading. Gene expression levels of INT-C are up-regulated under light-limiting growth conditions, and down-regulated after decapitation. Transcriptome analysis of wild-type and int-c buds under control and shading conditions identified target genes of INT-C that belong to auxin and gibberellin biosynthesis and signaling pathways. Our study identifies INT-C as an integrator of the shade response into tiller formation, which is prerequisite for implementing shading responses in the breeding of cereal crops. |
| format | Journal Article |
| id | CGSpace164148 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Oxford University Press |
| publisherStr | Oxford University Press |
| record_format | dspace |
| spelling | CGSpace1641482025-12-08T09:54:28Z INTERMEDIUM-C mediates the shade-induced bud growth arrest in barley Wang, Hongwen Seiler, Christiane Sreenivasulu, Nese von Wirén, Nicolaus Kuhlmann, Markus physiology plant science Tiller formation is a key agronomic determinant for grain yield in cereal crops. The modulation of this trait is controlled by transcriptional regulators and plant hormones, tightly regulated by external environmental conditions. While endogenous (genetic) and exogenous (environmental factors) triggers for tiller formation have mostly been investigated separately, it has remained elusive how they are integrated into the developmental program of this trait. The transcription factor gene INTERMEDIUM-C (INT-C), which is the barley ortholog of the maize domestication gene TEOSINTE BRANCHED1 (TB1), has a prominent role in regulating tiller bud outgrowth. Here we show that INT-C is expressed in tiller buds, required for bud growth arrest in response to shade. In contrast to wild-type plants, int-c mutant plants are impaired in their shade response and do not stop tiller production after shading. Gene expression levels of INT-C are up-regulated under light-limiting growth conditions, and down-regulated after decapitation. Transcriptome analysis of wild-type and int-c buds under control and shading conditions identified target genes of INT-C that belong to auxin and gibberellin biosynthesis and signaling pathways. Our study identifies INT-C as an integrator of the shade response into tiller formation, which is prerequisite for implementing shading responses in the breeding of cereal crops. 2022-04-05 2024-12-19T12:53:31Z 2024-12-19T12:53:31Z Journal Article https://hdl.handle.net/10568/164148 en Open Access Oxford University Press Wang, Hongwen; Seiler, Christiane; Sreenivasulu, Nese; von Wirén, Nicolaus and Kuhlmann, Markus. 2022. INTERMEDIUM-C mediates the shade-induced bud growth arrest in barley. Journal of Experimental Botany, (e-first copy); 15 pages. |
| spellingShingle | physiology plant science Wang, Hongwen Seiler, Christiane Sreenivasulu, Nese von Wirén, Nicolaus Kuhlmann, Markus INTERMEDIUM-C mediates the shade-induced bud growth arrest in barley |
| title | INTERMEDIUM-C mediates the shade-induced bud growth arrest in barley |
| title_full | INTERMEDIUM-C mediates the shade-induced bud growth arrest in barley |
| title_fullStr | INTERMEDIUM-C mediates the shade-induced bud growth arrest in barley |
| title_full_unstemmed | INTERMEDIUM-C mediates the shade-induced bud growth arrest in barley |
| title_short | INTERMEDIUM-C mediates the shade-induced bud growth arrest in barley |
| title_sort | intermedium c mediates the shade induced bud growth arrest in barley |
| topic | physiology plant science |
| url | https://hdl.handle.net/10568/164148 |
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