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

    31 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

    Keywords

    • Lignin
    • Lsi1
    • Lsi2
    • Rice
    • Silicon

    ASJC Scopus subject areas

    • Biotechnology
    • Agronomy and Crop Science
    • Plant Science

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