MiR397b regulates both lignin content and seed number in Arabidopsis via modulating a laccase involved in lignin biosynthesis.

@article{Wang2014MiR397bRB,
  title={MiR397b regulates both lignin content and seed number in Arabidopsis via modulating a laccase involved in lignin biosynthesis.},
  author={Cong-Ying Wang and Shengchun Zhang and Yang Yu and Yu-Chun Luo and Qing Liu and Changliang Ju and Yu-Chan Zhang and Liang-Hu Qu and William J. Lucas and Xiaojing Wang and Yue-Qin Chen},
  journal={Plant biotechnology journal},
  year={2014},
  volume={12 8},
  pages={1132-42}
}
Plant laccase (LAC) enzymes belong to the blue copper oxidase family and polymerize monolignols into lignin. Recent studies have established the involvement of microRNAs in this process; however, physiological functions and regulation of plant laccases remain poorly understood. Here, we show that a laccase gene, LAC4, regulated by a microRNA, miR397b, controls both lignin biosynthesis and seed yield in Arabidopsis. In transgenic plants, overexpression of miR397b (OXmiR397b) reduced lignin… CONTINUE READING
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