The Eucalyptus grandis R2R3-MYB transcription factor family evidence for woody growth-related evolution and function

The Eucalyptus grandis R2R3-MYB transcription factor family : evidence for woody growth-related evolution and function

© 2014 The Authors New Phytologist © 2014 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 206(2015), 4 vom: 15. Juni, Seite 1364-77
1. Verfasser: Soler, Marçal (VerfasserIn)
Weitere Verfasser: Camargo, Eduardo Leal Oliveira, Carocha, Victor, Cassan-Wang, Hua, San Clemente, Hélène, Savelli, Bruno, Hefer, Charles A, Paiva, Jorge A Pinto, Myburg, Alexander A, Grima-Pettenati, Jacqueline
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2015
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Eucalyptus grandis R2R3-MYB transcription factors cambium evolution secondary growth tandem duplications wood formation Plant Proteins mehr... RNA, Messenger Transcription Factors
Beschreibung
Zusammenfassung:© 2014 The Authors New Phytologist © 2014 New Phytologist Trust.
The R2R3-MYB family, one of the largest transcription factor families in higher plants, controls a wide variety of plant-specific processes including, notably, phenylpropanoid metabolism and secondary cell wall formation. We performed a genome-wide analysis of this superfamily in Eucalyptus, one of the most planted hardwood trees world-wide. A total of 141 predicted R2R3-MYB sequences identified in the Eucalyptus grandis genome sequence were subjected to comparative phylogenetic analyses with Arabidopsis thaliana, Oryza sativa, Populus trichocarpa and Vitis vinifera. We analysed features such as gene structure, conserved motifs and genome location. Transcript abundance patterns were assessed by RNAseq and validated by high-throughput quantitative PCR. We found some R2R3-MYB subgroups with expanded membership in E. grandis, V. vinifera and P. trichocarpa, and others preferentially found in woody species, suggesting diversification of specific functions in woody plants. By contrast, subgroups containing key genes regulating lignin biosynthesis and secondary cell wall formation are more conserved across all of the species analysed. In Eucalyptus, R2R3-MYB tandem gene duplications seem to disproportionately affect woody-preferential and woody-expanded subgroups. Interestingly, some of the genes belonging to woody-preferential subgroups show higher expression in the cambial region, suggesting a putative role in the regulation of secondary growth
Beschreibung:Date Completed 01.02.2016
Date Revised 30.03.2022
published: Print-Electronic
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/nph.13039