MYB-mediated regulation of lignin biosynthesis in grasses
Recent analyses of cell wall components of various grass mutant and transgenic lines have provided information on characteristic transcriptional regulation of cell wall formation in grasses, although its knowledge yet remains limited compared with that for eudicot cell wall formation. MYB transcript...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-12-01
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| Series: | Current Plant Biology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214662820300554 |
| _version_ | 1818266521728712704 |
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| author | Takuji Miyamoto Yuki Tobimatsu Toshiaki Umezawa |
| author_facet | Takuji Miyamoto Yuki Tobimatsu Toshiaki Umezawa |
| author_sort | Takuji Miyamoto |
| collection | DOAJ |
| description | Recent analyses of cell wall components of various grass mutant and transgenic lines have provided information on characteristic transcriptional regulation of cell wall formation in grasses, although its knowledge yet remains limited compared with that for eudicot cell wall formation. MYB transcription factors, which are regarded as downstream regulators operating under NAM, ATAF1/2, and CUC2 (NAC) domain transcription factors, have been suggested to be involved in direct regulation of cell wall biosynthesis. In this review, we discuss MYB-mediated transcriptional regulation of the biosynthesis of grass lignins, including grass-specific lignin components such as γ-acyl groups and flavone tricin units. Grass mutant and transgenic lines harboring modified cell-wall-associated MYB genes display altered composition of the γ-acylated and tricin-incorporated lignin units and/or modified expression of enzyme genes involved in the formation of these grass-specific lignin components along with conserved monolignol biosynthetic genes. These findings implicate important roles for MYB transcription factors in coordinated regulation of grass lignin biosynthesis including γ-acylated and tricin-incorporated lignin biosynthesis. |
| first_indexed | 2024-12-12T20:08:02Z |
| format | Article |
| id | doaj.art-06751f68c0e2473db4f6b4a66ead6344 |
| institution | Directory Open Access Journal |
| issn | 2214-6628 |
| language | English |
| last_indexed | 2024-12-12T20:08:02Z |
| publishDate | 2020-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Current Plant Biology |
| spelling | doaj.art-06751f68c0e2473db4f6b4a66ead63442022-12-22T00:13:35ZengElsevierCurrent Plant Biology2214-66282020-12-0124100174MYB-mediated regulation of lignin biosynthesis in grassesTakuji Miyamoto0Yuki Tobimatsu1Toshiaki Umezawa2Research Institute for Sustainable Humanosphere, Kyoto University, Uji, Kyoto 611-0011, JapanResearch Institute for Sustainable Humanosphere, Kyoto University, Uji, Kyoto 611-0011, JapanCorresponding author.; Research Institute for Sustainable Humanosphere, Kyoto University, Uji, Kyoto 611-0011, JapanRecent analyses of cell wall components of various grass mutant and transgenic lines have provided information on characteristic transcriptional regulation of cell wall formation in grasses, although its knowledge yet remains limited compared with that for eudicot cell wall formation. MYB transcription factors, which are regarded as downstream regulators operating under NAM, ATAF1/2, and CUC2 (NAC) domain transcription factors, have been suggested to be involved in direct regulation of cell wall biosynthesis. In this review, we discuss MYB-mediated transcriptional regulation of the biosynthesis of grass lignins, including grass-specific lignin components such as γ-acyl groups and flavone tricin units. Grass mutant and transgenic lines harboring modified cell-wall-associated MYB genes display altered composition of the γ-acylated and tricin-incorporated lignin units and/or modified expression of enzyme genes involved in the formation of these grass-specific lignin components along with conserved monolignol biosynthetic genes. These findings implicate important roles for MYB transcription factors in coordinated regulation of grass lignin biosynthesis including γ-acylated and tricin-incorporated lignin biosynthesis.http://www.sciencedirect.com/science/article/pii/S2214662820300554Cell wallGrassLigninLignocelluloseMYBTranscription factor |
| spellingShingle | Takuji Miyamoto Yuki Tobimatsu Toshiaki Umezawa MYB-mediated regulation of lignin biosynthesis in grasses Current Plant Biology Cell wall Grass Lignin Lignocellulose MYB Transcription factor |
| title | MYB-mediated regulation of lignin biosynthesis in grasses |
| title_full | MYB-mediated regulation of lignin biosynthesis in grasses |
| title_fullStr | MYB-mediated regulation of lignin biosynthesis in grasses |
| title_full_unstemmed | MYB-mediated regulation of lignin biosynthesis in grasses |
| title_short | MYB-mediated regulation of lignin biosynthesis in grasses |
| title_sort | myb mediated regulation of lignin biosynthesis in grasses |
| topic | Cell wall Grass Lignin Lignocellulose MYB Transcription factor |
| url | http://www.sciencedirect.com/science/article/pii/S2214662820300554 |
| work_keys_str_mv | AT takujimiyamoto mybmediatedregulationofligninbiosynthesisingrasses AT yukitobimatsu mybmediatedregulationofligninbiosynthesisingrasses AT toshiakiumezawa mybmediatedregulationofligninbiosynthesisingrasses |