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JXB Advance Access originally published online on July 12, 2009
Journal of Experimental Botany 2009 60(13):3849-3860; doi:10.1093/jxb/erp223
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© The Author [2009]. Published by Oxford University Press [on behalf of the Society for Experimental Biology]. All rights reserved. For Permissions, please e-mail: journals.permissions@oxfordjournals.org

RESEARCH PAPER

Molecular mechanism for jasmonate-induction of anthocyanin accumulation in Arabidopsis

Xiaoyi Shan1 *, Yongsheng Zhang1 *, Wen Peng1, Zhilong Wang2 and Daoxin Xie1,{dagger}

1MOE Key Centre of Bioinformatics, Department of Biological Sciences and Biotechnology, Tsinghua University, Beijing 100084, China
2Temasek Life Science Laboratory, National University of Singapore, 117604, Republic of Singapore

{dagger} To whom correspondence should be addressed: E-mail: daoxinlab{at}tsinghua.edu.cn

Anthocyanins are important plant pigments that fulfil many physiological and ecological functions. Anthocyanin biosynthesis is controlled by numerous regulatory factors at the transcriptional level. Jasmonates (JAs) has been shown to induce anthocyanin accumulation in several plant species, however, the molecular mechanism for JA-regulated anthocyanin accumulation remains unknown. In this study, genetic, molecular, and physiological approaches were used to reveal the molecular basis of JA-regulated pigmentation in Arabidopsis. It was found that the F-box protein COI1 was required for JA-specific induced expression of the ‘late’ anthocyanin biosynthetic genes DFR, LDOX, and UF3GT. It is further demonstrated that COI1 was essential for JA-induction of transcription factors PAP1, PAP2, and GL3. It is speculated that COI1 regulates the expression of the transcription factors, including PAP1, PAP2, and GL3, which mediates the ‘late’ anthocyanin biosynthetic genes DFR, LDOX, and UF3GT, thereby modulating JA-induced anthocyanin biosynthesis in Arabidopsis.

Key words: Anthocyanin, COI1, DFR, jasmonate, WD-repeat/Myb/bHLH

* These authors contributed equally to this work.

Received 1 June 2009; Revised 19 June 2009 Accepted 23 June 2009


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