A new class of plant lipid is essential for protection against phosphorus depletion

Yozo Okazaki, Hitomi Otsuki, Tomoko Narisawa, Makoto Kobayashi, Satoru Sawai, Yukiko Kamide, Miyako Kusano, Toshio Aoki, Masami Yokota Hirai, Kazuki Saito*

*この論文の責任著者

研究成果: ジャーナルへの寄稿学術論文査読

195 被引用数 (Scopus)

抄録

Phosphorus supply is a major factor responsible for reduced crop yields. As a result, plants utilize various adaptive mechanisms against phosphorus depletion, including lipid remodelling. Here we report the involvement of a novel plant lipid, glucuronosyldiacylglycerol, against phosphorus depletion. Lipidomic analysis of Arabidopsis plants cultured in phosphorus-depleted conditions revealed inducible accumulation of glucuronosyldiacylglycerol. Investigation using a series of sulfolipid sulfoquinovosyldiacylglycerol synthesis-deficient mutants of Arabidopsis determined that the biosynthesis of glucuronosyldiacylglycerol shares the pathway of sulfoquinovosyldiacylglycerol synthesis in chloroplasts. Under phosphorus-depleted conditions, the Arabidopsis sqd2 mutant, which does not accumulate either sulfoquinovosyldiacylglycerol or glucuronosyldiacylglycerol, was the most severely damaged of three sulfoquinovosyldiacylglycerol-deficient mutants. As glucuronosyldiacylglycerol is still present in the other two mutants, this result indicates that glucuronosyldiacylglycerol has a role in the protection of plants against phosphorus limitation stress. Glucuronosyldiacylglycerol was also found in rice, and its concentration increased significantly following phosphorus limitation, suggesting a shared physiological significance of this novel lipid against phosphorus depletion in plants.

本文言語英語
論文番号1510
ジャーナルNature Communications
4
DOI
出版ステータス出版済み - 2013

ASJC Scopus 主題領域

  • 化学一般
  • 生化学、遺伝学、分子生物学一般
  • 物理学および天文学一般

フィンガープリント

「A new class of plant lipid is essential for protection against phosphorus depletion」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル