The Poplar MYB Transcription Factors, PtrMYB3 and PtrMYB20, are Involved in the Regulation of Secondary Wall Biosynthesis | Zendy

Ryan L. McCarthy | Zendy; Ruiqin Zhong | Zendy; Scott R. Fowler | Zendy; David Lyskowski | Zendy; Hasanthi Piyasena | Zendy; Kara Carleton | Zendy; Charles Spicer | Zendy; ZhengHua Ye | Zendy

Open Access

The Poplar MYB Transcription Factors, PtrMYB3 and PtrMYB20, are Involved in the Regulation of Secondary Wall Biosynthesis

Author(s) -

Ryan L. McCarthy,

Ruiqin Zhong,

Scott R. Fowler,

David Lyskowski,

Hasanthi Piyasena,

Kara Carleton,

Charles Spicer,

ZhengHua Ye

Publication year - 2010

Publication title -

plant and cell physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.975

H-Index - 152

eISSN - 1471-9053

pISSN - 0032-0781

DOI - 10.1093/pcp/pcq064

Subject(s) - myb , arabidopsis , lignin , xylan , cellulose , biosynthesis , transcription factor , secondary cell wall , biochemistry , chemistry , gene , transcriptional regulation , cell wall , microbiology and biotechnology , transcription (linguistics) , biology , botany , mutant , linguistics , philosophy

Dicot wood is mainly composed of cellulose, xylan and lignin, and its formation requires the coordinated regulation of their biosynthesis. In this report, we demonstrate that the poplar wood-associated MYB transcriptional activators, PtrMYB3 and PtrMYB20, activate the biosynthetic pathways of cellulose, xylan and lignin when overexpressed in Arabidopsis and they are also able to activate the promoter activities of poplar wood biosynthetic genes. We also show that PtrMYB3 and PtrMYB20 are functional orthologs of Arabidopsis MYB46 and MYB83, and their expression is directly activated by poplar PtrWND2, suggesting their involvement in the regulation of wood formation in poplar.

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