Journal Article

The C–S–A gene system regulates hull pigmentation and reveals evolution of anthocyanin biosynthesis pathway in rice

Xingming Sun, Zhanying Zhang, Chao Chen, Wei Wu, Nannan Ren, Conghui Jiang, Jianping Yu, Yan Zhao, Xiaoming Zheng, Qingwen Yang, Hongliang Zhang, Jinjie Li and Zichao Li

in Journal of Experimental Botany

Volume 69, issue 7, pages 1485-1498
Published in print March 2018 | ISSN: 0022-0957
Published online January 2018 | e-ISSN: 1460-2431 | DOI: https://dx.doi.org/10.1093/jxb/ery001
The C–S–A gene system regulates hull pigmentation and reveals evolution of anthocyanin biosynthesis pathway in rice

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Abstract

Floral organs in rice (Oryza sativa) can be purple, brown, or red in color due to the accumulation of flavonoids, but the molecular mechanism underlying specific organ pigmentation is not clear. Here, we propose a C–S–A gene model for rice hull pigmentation and characterize it through genetic, molecular, and metabolomic approaches. Furthermore, we conducted phylogenetic studies to reveal the evolution of rice color. In this gene system, C1 encodes a R2R3-MYB transcription factor and acts as a color-producing gene, and S1 encodes a bHLH protein that functions in a...

Keywords: Color; domestication; evolution; flavonoid; gene interaction; gene network; rice

Journal Article.  9494 words.  Illustrated.

Subjects: Plant Sciences and Forestry

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