Silicon deficiency promotes lignin accumulation in rice

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

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)


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
Issue number4
Publication statusPublished - 2012


  • Lignin
  • Lsi1
  • Lsi2
  • Rice
  • Silicon

ASJC Scopus subject areas

  • Biotechnology
  • Agronomy and Crop Science
  • Plant Science


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