Journal
PLOS ONE
Volume 8, Issue 6, Pages -Publisher
PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0065680
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Categories
Funding
- National Natural Science Foundation of China [31071820, 31071825]
- Fundamental Research Funds for the Central Universities [KYJ200907, KYZ201112]
- Program for New Century Excellent Talents in University of Chinese Ministry of Education [NCET-10-0492]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Youth Innovation Program of NJAU [KJ2011009]
- Priority Academic Program Development of Jiangsu Higher Education Institutions, PAPD
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Plant R2R3-MYB transcription factor genes are widely distributed in higher plants and play important roles in the regulation of many secondary metabolites at the transcriptional level. In this study, a chrysanthemum subgroup 4 R2R3-MYB transcription factor gene, designated CmMYB1, was isolated through screening chrysanthemum EST (expressed sequence tag) libraries and using rapid application of cDNA ends (RACE) methods and functionally characterized. CmMYB1 is expressed in the root, stem, leaf and flowers, but most strongly in the stem and most weakly in the root. Its heterologous expression in Arabidopsis thaliana reduced the lignin content and altered the lignin composition. The heterologous expression also repressed the flavonoids content in A. thaliana. Together, these results suggested that CmMYB1 is a negative regulator of genes involved in the lignin pathway and flavonoid pathway, it may be a promising gene for controlling lignin and flavonoids profiles in plants.
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