Silicon deficiency promotes lignin accumulation in rice

Shiro Suzuki, Jian Feng Ma, Naoki Yamamoto, Takefumi Hattori, Masahiro Sakamoto, Toshiaki Umezawa

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24 Citations (Scopus)

Abstract

Although both lignin and silica accumulate on cell walls and confer rigidity, mechanical strength, and resistance to pathogen invasion in rice, it remains unclear whether silicon deficiency affects lignin accumulation. We demonstrate that low silicon rice mutated in a silicon influx transporter, Lsi1, or a silicon efflux transporter, Lsi2, contained larger amounts of lignin in the rice straws. Furthermore, wild-type rice cultivated on low silicon media also accumulated larger amounts of lignin in shoots. Significant accumulation of guaiacyl lignin upon silicon deficiency was determined by nitrobenzene oxidation analysis. These data indicate a negative correlation between silicon accumulation and lignin deposition.

Original languageEnglish
Pages (from-to)391-394
Number of pages4
JournalPlant Biotechnology
Volume29
Issue number4
DOIs
Publication statusPublished - 2012

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Keywords

  • Lignin
  • Lsi1
  • Lsi2
  • Rice
  • Silicon

ASJC Scopus subject areas

  • Plant Science
  • Biotechnology
  • Agronomy and Crop Science

Cite this

Suzuki, S., Ma, J. F., Yamamoto, N., Hattori, T., Sakamoto, M., & Umezawa, T. (2012). Silicon deficiency promotes lignin accumulation in rice. Plant Biotechnology, 29(4), 391-394. https://doi.org/10.5511/plantbiotechnology.12.0416a