Structural, evolutionary and functional analysis of the NAC domain protein family in Eucalyptus

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

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 206(2015), 4 vom: 11. Juni, Seite 1337-50
1. Verfasser: Hussey, Steven G (VerfasserIn)
Weitere Verfasser: Saïdi, Mohammed N, Hefer, Charles A, 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 NAC evolution stress transcription factor wood formation Plant Proteins
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520 |a NAC domain transcription factors regulate many developmental processes and stress responses in plants and vary widely in number and family structure. We analysed the characteristics and evolution of the NAC gene family of Eucalyptus grandis, a fast-growing forest tree in the rosid order Myrtales. NAC domain genes identified in the E. grandis genome were subjected to amino acid sequence, phylogenetic and motif analyses. Transcript abundance in developing tissues and abiotic stress conditions in E. grandis and E. globulus was quantified using RNA-seq and reverse transcription quantitative PCR (RT-qPCR). One hundred and eighty-nine E. grandis NAC (EgrNAC) proteins, arranged into 22 subfamilies, are extensively duplicated in subfamilies associated with stress response. Most EgrNAC genes form tandem duplicate arrays that frequently carry signatures of purifying selection. Sixteen amino acid motifs were identified in EgrNAC proteins, eight of which are enriched in, or unique to, Eucalyptus. New candidates for the regulation of normal and tension wood development and cold responses were identified. This first description of a Myrtales NAC domain family reveals an unique history of tandem duplication in stress-related subfamilies that has likely contributed to the adaptation of eucalypts to the challenging Australian environment. Several new candidates for the regulation of stress, wood formation and tree-specific development are reported 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a Eucalyptus 
650 4 |a NAC 
650 4 |a evolution 
650 4 |a stress 
650 4 |a transcription factor 
650 4 |a wood formation 
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700 1 |a Saïdi, Mohammed N  |e verfasserin  |4 aut 
700 1 |a Hefer, Charles A  |e verfasserin  |4 aut 
700 1 |a Myburg, Alexander A  |e verfasserin  |4 aut 
700 1 |a Grima-Pettenati, Jacqueline  |e verfasserin  |4 aut 
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773 1 8 |g volume:206  |g year:2015  |g number:4  |g day:11  |g month:06  |g pages:1337-50 
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